/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:35:38,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:35:38,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:35:38,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 19:35:38,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 19:35:38,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 19:35:38,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 19:35:38,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 19:35:38,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 19:35:38,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 19:35:38,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 19:35:38,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 19:35:38,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:35:38,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:35:38,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:35:38,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:35:38,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:35:38,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:35:38,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:35:38,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:35:38,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:35:38,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:35:38,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:35:38,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:35:38,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:35:38,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:35:38,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:35:38,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:35:38,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 19:35:38,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:35:38,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:35:38,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:35:38,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:35:38,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:35:38,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:35:38,347 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:35:38,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:35:38,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:35:38,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:35:38,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:35:38,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:35:38,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:35:38,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:35:38,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:35:38,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:35:38,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:35:38,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:35:38,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:35:38,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:35:38,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:35:38,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:35:38,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:35:38,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:35:38,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:35:38,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:35:38,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:35:38,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:35:38,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:35:38,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:35:38,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:35:38,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:35:38,790 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:35:38,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-10-13 19:35:38,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d887dbb34/193a25380fa84313bdc993289fbdb947/FLAG6b1e6812f [2021-10-13 19:35:39,456 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:35:39,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-10-13 19:35:39,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d887dbb34/193a25380fa84313bdc993289fbdb947/FLAG6b1e6812f [2021-10-13 19:35:39,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d887dbb34/193a25380fa84313bdc993289fbdb947 [2021-10-13 19:35:39,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:35:39,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:35:39,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:35:39,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:35:39,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:35:39,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:39" (1/1) ... [2021-10-13 19:35:39,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fc62da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:39, skipping insertion in model container [2021-10-13 19:35:39,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:39" (1/1) ... [2021-10-13 19:35:39,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:35:39,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:35:40,152 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2021-10-13 19:35:40,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:35:40,187 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:35:40,217 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2021-10-13 19:35:40,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:35:40,240 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:35:40,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40 WrapperNode [2021-10-13 19:35:40,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:35:40,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:35:40,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:35:40,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:35:40,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:35:40,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:35:40,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:35:40,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:35:40,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:35:40,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:35:40,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:35:40,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:35:40,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (1/1) ... [2021-10-13 19:35:40,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:35:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:40,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 19:35:40,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 19:35:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:35:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:35:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:35:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:35:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:35:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:35:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:35:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 19:35:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 19:35:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 19:35:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:35:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:35:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:35:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:35:40,452 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:35:41,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:35:41,440 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-13 19:35:41,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:41 BoogieIcfgContainer [2021-10-13 19:35:41,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:35:41,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:35:41,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:35:41,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:35:41,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:35:39" (1/3) ... [2021-10-13 19:35:41,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d1d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:41, skipping insertion in model container [2021-10-13 19:35:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:40" (2/3) ... [2021-10-13 19:35:41,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d1d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:41, skipping insertion in model container [2021-10-13 19:35:41,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:41" (3/3) ... [2021-10-13 19:35:41,464 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2021-10-13 19:35:41,471 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:35:41,472 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:35:41,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-13 19:35:41,472 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:35:41,526 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,526 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,530 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,531 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,532 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,534 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,535 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,536 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,537 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,538 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,538 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,538 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,538 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,539 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,539 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,539 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,539 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,539 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,540 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,542 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,542 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,542 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,542 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,542 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,543 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,543 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,543 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,549 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,549 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,551 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,551 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,553 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,554 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,569 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,569 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,581 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,583 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,583 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,585 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,586 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,587 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,587 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:35:41,595 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 19:35:41,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:35:41,658 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 19:35:41,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-10-13 19:35:41,677 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:35:41,689 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 148 transitions, 312 flow [2021-10-13 19:35:41,692 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 148 transitions, 312 flow [2021-10-13 19:35:41,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2021-10-13 19:35:41,759 INFO L129 PetriNetUnfolder]: 11/146 cut-off events. [2021-10-13 19:35:41,759 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 19:35:41,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 107. Up to 3 conditions per place. [2021-10-13 19:35:41,770 INFO L116 LiptonReduction]: Number of co-enabled transitions 1350 [2021-10-13 19:35:48,997 INFO L131 LiptonReduction]: Checked pairs total: 1962 [2021-10-13 19:35:48,998 INFO L133 LiptonReduction]: Total number of compositions: 162 [2021-10-13 19:35:49,010 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 31 transitions, 78 flow [2021-10-13 19:35:49,052 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:35:49,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:49,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:35:49,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash 22437, now seen corresponding path program 1 times [2021-10-13 19:35:49,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:49,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715372426] [2021-10-13 19:35:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:49,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:49,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:49,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715372426] [2021-10-13 19:35:49,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715372426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:49,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:49,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:35:49,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538203202] [2021-10-13 19:35:49,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:49,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:49,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:49,309 INFO L87 Difference]: Start difference. First operand has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:49,377 INFO L93 Difference]: Finished difference Result 219 states and 516 transitions. [2021-10-13 19:35:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 19:35:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:49,400 INFO L225 Difference]: With dead ends: 219 [2021-10-13 19:35:49,400 INFO L226 Difference]: Without dead ends: 219 [2021-10-13 19:35:49,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-13 19:35:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 112. [2021-10-13 19:35:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 2.879120879120879) internal successors, (262), 111 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 262 transitions. [2021-10-13 19:35:49,449 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 262 transitions. Word has length 2 [2021-10-13 19:35:49,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:49,450 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 262 transitions. [2021-10-13 19:35:49,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 262 transitions. [2021-10-13 19:35:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:35:49,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:49,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:35:49,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:35:49,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash 22438, now seen corresponding path program 1 times [2021-10-13 19:35:49,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:49,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300603847] [2021-10-13 19:35:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:49,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:49,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:49,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300603847] [2021-10-13 19:35:49,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300603847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:49,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:49,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:35:49,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073742235] [2021-10-13 19:35:49,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:49,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:49,500 INFO L87 Difference]: Start difference. First operand 112 states and 262 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:49,517 INFO L93 Difference]: Finished difference Result 111 states and 260 transitions. [2021-10-13 19:35:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 19:35:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:49,524 INFO L225 Difference]: With dead ends: 111 [2021-10-13 19:35:49,524 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 19:35:49,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 19:35:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-13 19:35:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 2.857142857142857) internal successors, (260), 110 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 260 transitions. [2021-10-13 19:35:49,537 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 260 transitions. Word has length 2 [2021-10-13 19:35:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:49,537 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 260 transitions. [2021-10-13 19:35:49,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 260 transitions. [2021-10-13 19:35:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:35:49,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:49,538 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:35:49,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 19:35:49,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 696656, now seen corresponding path program 1 times [2021-10-13 19:35:49,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:49,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528731077] [2021-10-13 19:35:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:49,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:49,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:49,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528731077] [2021-10-13 19:35:49,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528731077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:49,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851915553] [2021-10-13 19:35:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:49,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:49,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:49,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:49,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 19:35:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:35:49,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:49,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851915553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:49,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-13 19:35:49,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408451969] [2021-10-13 19:35:49,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:35:49,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:35:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:35:49,731 INFO L87 Difference]: Start difference. First operand 111 states and 260 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:49,787 INFO L93 Difference]: Finished difference Result 326 states and 770 transitions. [2021-10-13 19:35:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:35:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:35:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:49,797 INFO L225 Difference]: With dead ends: 326 [2021-10-13 19:35:49,798 INFO L226 Difference]: Without dead ends: 326 [2021-10-13 19:35:49,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:35:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-13 19:35:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 112. [2021-10-13 19:35:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 2.847826086956522) internal successors, (262), 111 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 262 transitions. [2021-10-13 19:35:49,821 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 262 transitions. Word has length 3 [2021-10-13 19:35:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:49,821 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 262 transitions. [2021-10-13 19:35:49,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 262 transitions. [2021-10-13 19:35:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:35:49,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:49,823 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 19:35:49,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:50,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:50,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash 21597445, now seen corresponding path program 2 times [2021-10-13 19:35:50,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:50,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836062650] [2021-10-13 19:35:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:50,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:50,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:50,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836062650] [2021-10-13 19:35:50,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836062650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:50,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140515440] [2021-10-13 19:35:50,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:35:50,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:50,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:50,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:50,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 19:35:50,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:35:50,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:50,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:35:50,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:35:50,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140515440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:50,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:35:50,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:35:50,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024329015] [2021-10-13 19:35:50,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:50,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:50,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:50,262 INFO L87 Difference]: Start difference. First operand 112 states and 262 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:50,277 INFO L93 Difference]: Finished difference Result 111 states and 261 transitions. [2021-10-13 19:35:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 19:35:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:50,280 INFO L225 Difference]: With dead ends: 111 [2021-10-13 19:35:50,281 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 19:35:50,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:50,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 19:35:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-13 19:35:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 2.8555555555555556) internal successors, (257), 108 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 257 transitions. [2021-10-13 19:35:50,305 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 257 transitions. Word has length 4 [2021-10-13 19:35:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:50,306 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 257 transitions. [2021-10-13 19:35:50,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 257 transitions. [2021-10-13 19:35:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:35:50,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:50,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:35:50,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:50,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:50,529 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash 669696603, now seen corresponding path program 1 times [2021-10-13 19:35:50,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:50,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731011752] [2021-10-13 19:35:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:50,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:50,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:50,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731011752] [2021-10-13 19:35:50,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731011752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:50,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:50,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:35:50,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068540869] [2021-10-13 19:35:50,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:50,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:50,627 INFO L87 Difference]: Start difference. First operand 109 states and 257 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:50,649 INFO L93 Difference]: Finished difference Result 173 states and 408 transitions. [2021-10-13 19:35:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:50,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:35:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:50,652 INFO L225 Difference]: With dead ends: 173 [2021-10-13 19:35:50,652 INFO L226 Difference]: Without dead ends: 173 [2021-10-13 19:35:50,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-13 19:35:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 123. [2021-10-13 19:35:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 3.1826923076923075) internal successors, (331), 122 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 331 transitions. [2021-10-13 19:35:50,661 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 331 transitions. Word has length 5 [2021-10-13 19:35:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:50,662 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 331 transitions. [2021-10-13 19:35:50,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 331 transitions. [2021-10-13 19:35:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:35:50,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:50,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:35:50,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 19:35:50,664 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 669696478, now seen corresponding path program 1 times [2021-10-13 19:35:50,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:50,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173375048] [2021-10-13 19:35:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:50,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:50,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:50,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173375048] [2021-10-13 19:35:50,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173375048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:50,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:50,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:35:50,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770077826] [2021-10-13 19:35:50,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:35:50,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:35:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:35:50,724 INFO L87 Difference]: Start difference. First operand 123 states and 331 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:50,782 INFO L93 Difference]: Finished difference Result 137 states and 352 transitions. [2021-10-13 19:35:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:35:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:35:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:50,784 INFO L225 Difference]: With dead ends: 137 [2021-10-13 19:35:50,784 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:35:50,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:35:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:35:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-13 19:35:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 3.1619047619047618) internal successors, (332), 123 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 332 transitions. [2021-10-13 19:35:50,793 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 332 transitions. Word has length 5 [2021-10-13 19:35:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:50,793 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 332 transitions. [2021-10-13 19:35:50,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 332 transitions. [2021-10-13 19:35:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:35:50,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:50,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 19:35:50,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 19:35:50,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash -719481773, now seen corresponding path program 1 times [2021-10-13 19:35:50,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:50,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879070267] [2021-10-13 19:35:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:50,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:50,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:50,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879070267] [2021-10-13 19:35:50,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879070267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:50,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181658412] [2021-10-13 19:35:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:50,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:50,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:50,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:50,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 19:35:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:50,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:35:50,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:50,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181658412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:50,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:35:50,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:35:50,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507419452] [2021-10-13 19:35:50,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:50,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:50,940 INFO L87 Difference]: Start difference. First operand 124 states and 332 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:50,959 INFO L93 Difference]: Finished difference Result 82 states and 200 transitions. [2021-10-13 19:35:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:50,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 19:35:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:50,961 INFO L225 Difference]: With dead ends: 82 [2021-10-13 19:35:50,961 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 19:35:50,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 19:35:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-13 19:35:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 2.7027027027027026) internal successors, (200), 81 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 200 transitions. [2021-10-13 19:35:50,967 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 200 transitions. Word has length 6 [2021-10-13 19:35:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:50,967 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 200 transitions. [2021-10-13 19:35:50,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 200 transitions. [2021-10-13 19:35:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:35:50,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:50,968 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:51,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:51,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:51,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:51,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:51,184 INFO L82 PathProgramCache]: Analyzing trace with hash -829093671, now seen corresponding path program 1 times [2021-10-13 19:35:51,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:51,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586801126] [2021-10-13 19:35:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:51,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:51,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:51,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586801126] [2021-10-13 19:35:51,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586801126] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:51,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:51,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:35:51,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424026039] [2021-10-13 19:35:51,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:51,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:51,264 INFO L87 Difference]: Start difference. First operand 82 states and 200 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:51,274 INFO L93 Difference]: Finished difference Result 70 states and 171 transitions. [2021-10-13 19:35:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:35:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:51,278 INFO L225 Difference]: With dead ends: 70 [2021-10-13 19:35:51,278 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 19:35:51,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 19:35:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 19:35:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 2.6307692307692307) internal successors, (171), 69 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 171 transitions. [2021-10-13 19:35:51,287 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 171 transitions. Word has length 7 [2021-10-13 19:35:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:51,289 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 171 transitions. [2021-10-13 19:35:51,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 171 transitions. [2021-10-13 19:35:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:35:51,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:51,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:51,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 19:35:51,292 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash -829093686, now seen corresponding path program 1 times [2021-10-13 19:35:51,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:51,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487907780] [2021-10-13 19:35:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:51,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:51,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:51,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487907780] [2021-10-13 19:35:51,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487907780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:51,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155222850] [2021-10-13 19:35:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:51,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:51,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:51,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 19:35:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:51,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:35:51,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:51,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155222850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:51,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:51,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-10-13 19:35:51,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842474283] [2021-10-13 19:35:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:35:51,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:35:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:35:51,506 INFO L87 Difference]: Start difference. First operand 70 states and 171 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:51,712 INFO L93 Difference]: Finished difference Result 178 states and 398 transitions. [2021-10-13 19:35:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:35:51,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:35:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:51,715 INFO L225 Difference]: With dead ends: 178 [2021-10-13 19:35:51,715 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:35:51,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:35:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:35:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2021-10-13 19:35:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 105 states have (on average 2.704761904761905) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2021-10-13 19:35:51,722 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 7 [2021-10-13 19:35:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:51,723 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2021-10-13 19:35:51,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2021-10-13 19:35:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:35:51,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:51,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:51,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:51,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:51,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash 73136672, now seen corresponding path program 1 times [2021-10-13 19:35:51,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:51,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351296625] [2021-10-13 19:35:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:51,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:51,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:51,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351296625] [2021-10-13 19:35:51,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351296625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:51,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:35:51,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:35:51,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735848976] [2021-10-13 19:35:51,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:51,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:51,993 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:52,012 INFO L93 Difference]: Finished difference Result 94 states and 219 transitions. [2021-10-13 19:35:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 19:35:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:52,014 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:35:52,014 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 19:35:52,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:35:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 19:35:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-13 19:35:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 2.5172413793103448) internal successors, (219), 93 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 219 transitions. [2021-10-13 19:35:52,020 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 219 transitions. Word has length 8 [2021-10-13 19:35:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:52,020 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 219 transitions. [2021-10-13 19:35:52,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 219 transitions. [2021-10-13 19:35:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:35:52,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:52,022 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 19:35:52,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 19:35:52,022 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:52,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1363489612, now seen corresponding path program 2 times [2021-10-13 19:35:52,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:52,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948565843] [2021-10-13 19:35:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:52,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:35:52,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:52,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948565843] [2021-10-13 19:35:52,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948565843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:52,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992111906] [2021-10-13 19:35:52,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:35:52,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:52,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:52,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 19:35:52,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:35:52,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:52,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:35:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:35:52,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992111906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:52,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:35:52,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-13 19:35:52,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529022195] [2021-10-13 19:35:52,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:35:52,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:35:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:52,167 INFO L87 Difference]: Start difference. First operand 94 states and 219 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:52,174 INFO L93 Difference]: Finished difference Result 82 states and 190 transitions. [2021-10-13 19:35:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:35:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 19:35:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:52,176 INFO L225 Difference]: With dead ends: 82 [2021-10-13 19:35:52,176 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 19:35:52,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:35:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 19:35:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2021-10-13 19:35:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 2.28125) internal successors, (146), 67 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 146 transitions. [2021-10-13 19:35:52,180 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 146 transitions. Word has length 9 [2021-10-13 19:35:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:52,181 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 146 transitions. [2021-10-13 19:35:52,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 146 transitions. [2021-10-13 19:35:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:52,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:52,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:52,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:52,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:52,392 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:52,393 INFO L82 PathProgramCache]: Analyzing trace with hash 808150804, now seen corresponding path program 1 times [2021-10-13 19:35:52,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:52,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441067473] [2021-10-13 19:35:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:52,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:52,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:52,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441067473] [2021-10-13 19:35:52,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441067473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:52,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942964045] [2021-10-13 19:35:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:52,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:52,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:52,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 19:35:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:35:52,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:52,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 222 [2021-10-13 19:35:52,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:35:53,082 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:53,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:35:53,281 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:53,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:35:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:53,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942964045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:53,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:53,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:35:53,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286973000] [2021-10-13 19:35:53,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:35:53,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:35:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:35:53,397 INFO L87 Difference]: Start difference. First operand 68 states and 146 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:53,816 INFO L93 Difference]: Finished difference Result 86 states and 181 transitions. [2021-10-13 19:35:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:35:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:53,818 INFO L225 Difference]: With dead ends: 86 [2021-10-13 19:35:53,818 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 19:35:53,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 390.2ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:35:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 19:35:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-13 19:35:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 2.257142857142857) internal successors, (158), 73 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 158 transitions. [2021-10-13 19:35:53,823 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 158 transitions. Word has length 10 [2021-10-13 19:35:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:53,823 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 158 transitions. [2021-10-13 19:35:53,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 158 transitions. [2021-10-13 19:35:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:53,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:53,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:53,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:54,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 19:35:54,036 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:54,037 INFO L82 PathProgramCache]: Analyzing trace with hash 809670098, now seen corresponding path program 1 times [2021-10-13 19:35:54,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:54,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638046285] [2021-10-13 19:35:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:54,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:54,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:54,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638046285] [2021-10-13 19:35:54,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638046285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:54,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183564586] [2021-10-13 19:35:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:54,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:54,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:54,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:54,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 19:35:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:54,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:35:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:54,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:35:54,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 19:35:54,486 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:54,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 19:35:54,601 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:54,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 19:35:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:54,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183564586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:54,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:54,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 19:35:54,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322080495] [2021-10-13 19:35:54,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:35:54,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:35:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:35:54,750 INFO L87 Difference]: Start difference. First operand 74 states and 158 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:55,051 INFO L93 Difference]: Finished difference Result 81 states and 172 transitions. [2021-10-13 19:35:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:35:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:55,053 INFO L225 Difference]: With dead ends: 81 [2021-10-13 19:35:55,053 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 19:35:55,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 289.2ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:35:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 19:35:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-13 19:35:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 2.2) internal successors, (165), 78 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 165 transitions. [2021-10-13 19:35:55,058 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 165 transitions. Word has length 10 [2021-10-13 19:35:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:55,058 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 165 transitions. [2021-10-13 19:35:55,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 165 transitions. [2021-10-13 19:35:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:55,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:55,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:55,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:55,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 19:35:55,274 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:55,275 INFO L82 PathProgramCache]: Analyzing trace with hash 804977644, now seen corresponding path program 2 times [2021-10-13 19:35:55,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:55,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135664623] [2021-10-13 19:35:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:55,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:55,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:55,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135664623] [2021-10-13 19:35:55,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135664623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:55,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485313516] [2021-10-13 19:35:55,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:35:55,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:55,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:55,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:55,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 19:35:55,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:35:55,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:55,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:35:55,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:55,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485313516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:55,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:35:55,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2021-10-13 19:35:55,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884895606] [2021-10-13 19:35:55,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:35:55,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:55,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:35:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:35:55,937 INFO L87 Difference]: Start difference. First operand 79 states and 165 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:55,974 INFO L93 Difference]: Finished difference Result 89 states and 177 transitions. [2021-10-13 19:35:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:35:55,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:55,976 INFO L225 Difference]: With dead ends: 89 [2021-10-13 19:35:55,976 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 19:35:55,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:35:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 19:35:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2021-10-13 19:35:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 2.1125) internal successors, (169), 83 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 169 transitions. [2021-10-13 19:35:55,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 169 transitions. Word has length 10 [2021-10-13 19:35:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:55,981 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 169 transitions. [2021-10-13 19:35:55,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 169 transitions. [2021-10-13 19:35:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:55,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:55,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:56,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:56,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 19:35:56,197 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash 804977597, now seen corresponding path program 1 times [2021-10-13 19:35:56,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:56,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348521871] [2021-10-13 19:35:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:56,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:56,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:56,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348521871] [2021-10-13 19:35:56,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348521871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:56,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721249701] [2021-10-13 19:35:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:56,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:56,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:56,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:56,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 19:35:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:56,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:35:56,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:56,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 189 [2021-10-13 19:35:56,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 19:35:56,674 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:35:56,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 19:35:56,753 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:35:56,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 19:35:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:56,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721249701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:56,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:56,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 19:35:56,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665512829] [2021-10-13 19:35:56,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:35:56,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:35:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:35:56,866 INFO L87 Difference]: Start difference. First operand 84 states and 169 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:57,271 INFO L93 Difference]: Finished difference Result 94 states and 179 transitions. [2021-10-13 19:35:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:35:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:57,272 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:35:57,273 INFO L226 Difference]: Without dead ends: 90 [2021-10-13 19:35:57,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 373.4ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:35:57,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-13 19:35:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2021-10-13 19:35:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.097560975609756) internal successors, (172), 85 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 172 transitions. [2021-10-13 19:35:57,277 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 172 transitions. Word has length 10 [2021-10-13 19:35:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:57,277 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 172 transitions. [2021-10-13 19:35:57,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 172 transitions. [2021-10-13 19:35:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:57,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:57,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:57,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:57,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:57,489 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 804978295, now seen corresponding path program 1 times [2021-10-13 19:35:57,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:57,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862383661] [2021-10-13 19:35:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:57,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:57,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:57,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862383661] [2021-10-13 19:35:57,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862383661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:57,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179376833] [2021-10-13 19:35:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:57,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:57,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:57,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:57,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 19:35:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:57,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:35:57,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:57,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:35:57,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:35:57,983 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:57,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:35:58,078 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:58,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:35:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:58,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179376833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:58,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:35:58,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 19:35:58,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955965915] [2021-10-13 19:35:58,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:35:58,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:35:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:35:58,229 INFO L87 Difference]: Start difference. First operand 86 states and 172 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:58,651 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2021-10-13 19:35:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:35:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:58,652 INFO L225 Difference]: With dead ends: 88 [2021-10-13 19:35:58,652 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 19:35:58,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 394.9ms TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:35:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 19:35:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-10-13 19:35:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 2.0875) internal successors, (167), 83 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 167 transitions. [2021-10-13 19:35:58,656 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 167 transitions. Word has length 10 [2021-10-13 19:35:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:58,656 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 167 transitions. [2021-10-13 19:35:58,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 167 transitions. [2021-10-13 19:35:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:35:58,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:58,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:58,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:58,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 19:35:58,868 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 827544698, now seen corresponding path program 2 times [2021-10-13 19:35:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:58,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123788051] [2021-10-13 19:35:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:58,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:35:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:35:59,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:35:59,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123788051] [2021-10-13 19:35:59,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123788051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:35:59,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217878966] [2021-10-13 19:35:59,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:35:59,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:59,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:35:59,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:35:59,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 19:35:59,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:35:59,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:35:59,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:35:59,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:35:59,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:35:59,450 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:35:59,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:35:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:35:59,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217878966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:35:59,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:35:59,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2021-10-13 19:35:59,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057393748] [2021-10-13 19:35:59,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:35:59,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:35:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:35:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:35:59,494 INFO L87 Difference]: Start difference. First operand 84 states and 167 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:35:59,623 INFO L93 Difference]: Finished difference Result 104 states and 223 transitions. [2021-10-13 19:35:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:35:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 19:35:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:35:59,625 INFO L225 Difference]: With dead ends: 104 [2021-10-13 19:35:59,625 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 19:35:59,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 196.5ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:35:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 19:35:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2021-10-13 19:35:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 2.1494252873563218) internal successors, (187), 90 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 187 transitions. [2021-10-13 19:35:59,630 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 187 transitions. Word has length 10 [2021-10-13 19:35:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:35:59,630 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 187 transitions. [2021-10-13 19:35:59,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:35:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 187 transitions. [2021-10-13 19:35:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:35:59,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:35:59,632 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:35:59,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:35:59,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:35:59,833 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:35:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:35:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash 328390079, now seen corresponding path program 3 times [2021-10-13 19:35:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:35:59,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21580454] [2021-10-13 19:35:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:35:59,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:35:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:00,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:00,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21580454] [2021-10-13 19:36:00,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21580454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450466797] [2021-10-13 19:36:00,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:00,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:00,239 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:00,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 19:36:00,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:36:00,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:36:00,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:00,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 142 [2021-10-13 19:36:00,496 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:00,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:36:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:00,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450466797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:00,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:00,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:36:00,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223820934] [2021-10-13 19:36:00,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:00,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:00,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:00,538 INFO L87 Difference]: Start difference. First operand 91 states and 187 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:00,602 INFO L93 Difference]: Finished difference Result 99 states and 201 transitions. [2021-10-13 19:36:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:36:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:00,604 INFO L225 Difference]: With dead ends: 99 [2021-10-13 19:36:00,604 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 19:36:00,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 212.9ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:36:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 19:36:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2021-10-13 19:36:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.182926829268293) internal successors, (179), 85 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 179 transitions. [2021-10-13 19:36:00,607 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 179 transitions. Word has length 11 [2021-10-13 19:36:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:00,607 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 179 transitions. [2021-10-13 19:36:00,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 179 transitions. [2021-10-13 19:36:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:00,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:00,608 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:00,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:00,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:36:00,818 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:00,819 INFO L82 PathProgramCache]: Analyzing trace with hash 328390032, now seen corresponding path program 2 times [2021-10-13 19:36:00,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:00,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390110387] [2021-10-13 19:36:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:00,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:01,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:01,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390110387] [2021-10-13 19:36:01,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390110387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:01,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676999530] [2021-10-13 19:36:01,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:01,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:01,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:01,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:01,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 19:36:01,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:36:01,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:01,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:36:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:01,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 259 [2021-10-13 19:36:01,548 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:01,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:36:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:01,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676999530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:01,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:01,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:36:01,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276449316] [2021-10-13 19:36:01,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:01,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:01,594 INFO L87 Difference]: Start difference. First operand 86 states and 179 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:01,665 INFO L93 Difference]: Finished difference Result 90 states and 182 transitions. [2021-10-13 19:36:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:36:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:01,666 INFO L225 Difference]: With dead ends: 90 [2021-10-13 19:36:01,666 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 19:36:01,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:36:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 19:36:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-13 19:36:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 2.1842105263157894) internal successors, (166), 79 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 166 transitions. [2021-10-13 19:36:01,670 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 166 transitions. Word has length 11 [2021-10-13 19:36:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 166 transitions. [2021-10-13 19:36:01,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 166 transitions. [2021-10-13 19:36:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:01,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:01,672 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:01,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:01,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:01,883 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:01,883 INFO L82 PathProgramCache]: Analyzing trace with hash 329909420, now seen corresponding path program 2 times [2021-10-13 19:36:01,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:01,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979652493] [2021-10-13 19:36:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:01,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:02,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:02,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979652493] [2021-10-13 19:36:02,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979652493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:02,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212745416] [2021-10-13 19:36:02,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:02,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:02,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:02,250 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:02,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 19:36:02,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:36:02,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:02,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:36:02,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:02,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212745416] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:02,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:02,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:36:02,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762001278] [2021-10-13 19:36:02,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:02,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:02,537 INFO L87 Difference]: Start difference. First operand 80 states and 166 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:02,614 INFO L93 Difference]: Finished difference Result 107 states and 234 transitions. [2021-10-13 19:36:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:36:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:02,616 INFO L225 Difference]: With dead ends: 107 [2021-10-13 19:36:02,616 INFO L226 Difference]: Without dead ends: 107 [2021-10-13 19:36:02,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 196.1ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-13 19:36:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2021-10-13 19:36:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 2.2) internal successors, (198), 93 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 198 transitions. [2021-10-13 19:36:02,622 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 198 transitions. Word has length 11 [2021-10-13 19:36:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 198 transitions. [2021-10-13 19:36:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 198 transitions. [2021-10-13 19:36:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:02,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:02,623 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:02,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:02,838 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash 325216872, now seen corresponding path program 3 times [2021-10-13 19:36:02,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:02,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696853233] [2021-10-13 19:36:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:02,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:03,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:03,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696853233] [2021-10-13 19:36:03,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696853233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:03,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110459606] [2021-10-13 19:36:03,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:03,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:03,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:03,110 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:03,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 19:36:03,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:36:03,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:03,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:36:03,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:03,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110459606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:03,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2021-10-13 19:36:03,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000714834] [2021-10-13 19:36:03,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:36:03,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:36:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:36:03,343 INFO L87 Difference]: Start difference. First operand 94 states and 198 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:03,377 INFO L93 Difference]: Finished difference Result 94 states and 194 transitions. [2021-10-13 19:36:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:36:03,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:03,378 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:36:03,378 INFO L226 Difference]: Without dead ends: 90 [2021-10-13 19:36:03,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:36:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-13 19:36:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-13 19:36:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 2.197674418604651) internal successors, (189), 89 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 189 transitions. [2021-10-13 19:36:03,382 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 189 transitions. Word has length 11 [2021-10-13 19:36:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:03,383 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 189 transitions. [2021-10-13 19:36:03,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 189 transitions. [2021-10-13 19:36:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:03,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:03,384 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:03,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:03,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:03,598 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:03,599 INFO L82 PathProgramCache]: Analyzing trace with hash 325217570, now seen corresponding path program 3 times [2021-10-13 19:36:03,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:03,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956049378] [2021-10-13 19:36:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:03,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:04,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:04,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956049378] [2021-10-13 19:36:04,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956049378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:04,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125697022] [2021-10-13 19:36:04,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:04,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:04,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:04,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 19:36:04,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:36:04,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:04,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:36:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:04,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125697022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:04,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:04,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:36:04,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972856692] [2021-10-13 19:36:04,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:04,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:04,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:04,368 INFO L87 Difference]: Start difference. First operand 90 states and 189 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:04,424 INFO L93 Difference]: Finished difference Result 102 states and 218 transitions. [2021-10-13 19:36:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:36:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:04,426 INFO L225 Difference]: With dead ends: 102 [2021-10-13 19:36:04,426 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 19:36:04,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 213.8ms TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 19:36:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2021-10-13 19:36:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 2.25531914893617) internal successors, (212), 97 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 212 transitions. [2021-10-13 19:36:04,441 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 212 transitions. Word has length 11 [2021-10-13 19:36:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 212 transitions. [2021-10-13 19:36:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 212 transitions. [2021-10-13 19:36:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:04,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:04,442 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:04,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:04,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 19:36:04,643 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash 325217523, now seen corresponding path program 3 times [2021-10-13 19:36:04,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:04,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616534076] [2021-10-13 19:36:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:04,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:05,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:05,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616534076] [2021-10-13 19:36:05,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616534076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:05,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167138063] [2021-10-13 19:36:05,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:05,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:05,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:05,077 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:05,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 19:36:05,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:36:05,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:05,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:36:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:05,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167138063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:05,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:05,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:36:05,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326969454] [2021-10-13 19:36:05,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:05,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:05,435 INFO L87 Difference]: Start difference. First operand 98 states and 212 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:05,489 INFO L93 Difference]: Finished difference Result 102 states and 212 transitions. [2021-10-13 19:36:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:36:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:05,491 INFO L225 Difference]: With dead ends: 102 [2021-10-13 19:36:05,491 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 19:36:05,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 218.7ms TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 19:36:05,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-10-13 19:36:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 2.1818181818181817) internal successors, (192), 91 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 192 transitions. [2021-10-13 19:36:05,498 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 192 transitions. Word has length 11 [2021-10-13 19:36:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 192 transitions. [2021-10-13 19:36:05,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 192 transitions. [2021-10-13 19:36:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:05,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:05,501 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:05,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:05,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:05,713 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash 347784020, now seen corresponding path program 4 times [2021-10-13 19:36:05,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:05,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213854530] [2021-10-13 19:36:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:05,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:06,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213854530] [2021-10-13 19:36:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213854530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593830165] [2021-10-13 19:36:06,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:36:06,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:06,128 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:06,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 19:36:06,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:36:06,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:06,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:36:06,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:06,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:36:06,491 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:06,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:36:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:36:06,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593830165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:06,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:06,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 19:36:06,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792515331] [2021-10-13 19:36:06,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:36:06,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:36:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:36:06,537 INFO L87 Difference]: Start difference. First operand 92 states and 192 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:07,191 INFO L93 Difference]: Finished difference Result 164 states and 367 transitions. [2021-10-13 19:36:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:36:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:07,193 INFO L225 Difference]: With dead ends: 164 [2021-10-13 19:36:07,193 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 19:36:07,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 703.7ms TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:36:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 19:36:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 78. [2021-10-13 19:36:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 2.081081081081081) internal successors, (154), 77 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 154 transitions. [2021-10-13 19:36:07,199 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 154 transitions. Word has length 11 [2021-10-13 19:36:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:07,199 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 154 transitions. [2021-10-13 19:36:07,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 154 transitions. [2021-10-13 19:36:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:07,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:07,200 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:07,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:07,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:07,401 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1084956514, now seen corresponding path program 5 times [2021-10-13 19:36:07,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:07,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226939814] [2021-10-13 19:36:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:07,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:07,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:07,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226939814] [2021-10-13 19:36:07,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226939814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:07,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646064785] [2021-10-13 19:36:07,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:36:07,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:07,627 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:07,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 19:36:07,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:07,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:07,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:36:07,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:36:07,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646064785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:07,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:07,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-13 19:36:07,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373417242] [2021-10-13 19:36:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:36:07,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:36:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:36:07,938 INFO L87 Difference]: Start difference. First operand 78 states and 154 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:08,001 INFO L93 Difference]: Finished difference Result 94 states and 194 transitions. [2021-10-13 19:36:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:36:08,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:08,002 INFO L225 Difference]: With dead ends: 94 [2021-10-13 19:36:08,003 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 19:36:08,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:36:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 19:36:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2021-10-13 19:36:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 2.175) internal successors, (174), 83 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 174 transitions. [2021-10-13 19:36:08,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 174 transitions. Word has length 11 [2021-10-13 19:36:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:08,007 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 174 transitions. [2021-10-13 19:36:08,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 174 transitions. [2021-10-13 19:36:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:08,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:08,008 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:08,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:08,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 19:36:08,222 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1084956467, now seen corresponding path program 4 times [2021-10-13 19:36:08,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:08,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427418886] [2021-10-13 19:36:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:08,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:08,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:08,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427418886] [2021-10-13 19:36:08,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427418886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:08,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757878143] [2021-10-13 19:36:08,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:36:08,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:08,757 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:08,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 19:36:08,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:36:08,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:36:08,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:36:09,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757878143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:09,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:09,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:36:09,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958672364] [2021-10-13 19:36:09,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:36:09,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:36:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:36:09,136 INFO L87 Difference]: Start difference. First operand 84 states and 174 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:09,976 INFO L93 Difference]: Finished difference Result 122 states and 246 transitions. [2021-10-13 19:36:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:36:09,977 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:09,978 INFO L225 Difference]: With dead ends: 122 [2021-10-13 19:36:09,978 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 19:36:09,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 922.0ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:36:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 19:36:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 76. [2021-10-13 19:36:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 151 transitions. [2021-10-13 19:36:09,982 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 151 transitions. Word has length 11 [2021-10-13 19:36:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:09,983 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 151 transitions. [2021-10-13 19:36:09,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 151 transitions. [2021-10-13 19:36:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:36:09,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:09,984 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:10,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:10,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 19:36:10,185 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:10,186 INFO L82 PathProgramCache]: Analyzing trace with hash -670028205, now seen corresponding path program 1 times [2021-10-13 19:36:10,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:10,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801370500] [2021-10-13 19:36:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:10,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:10,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:10,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801370500] [2021-10-13 19:36:10,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801370500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:10,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406103341] [2021-10-13 19:36:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:10,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:10,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:10,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 19:36:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:10,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:36:10,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:36:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406103341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:36:10,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:36:10,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-13 19:36:10,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919161455] [2021-10-13 19:36:10,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:36:10,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:36:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:36:10,530 INFO L87 Difference]: Start difference. First operand 76 states and 151 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:10,562 INFO L93 Difference]: Finished difference Result 114 states and 229 transitions. [2021-10-13 19:36:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:36:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:36:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:10,564 INFO L225 Difference]: With dead ends: 114 [2021-10-13 19:36:10,564 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 19:36:10,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:36:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 19:36:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2021-10-13 19:36:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 64 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 155 transitions. [2021-10-13 19:36:10,568 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 155 transitions. Word has length 11 [2021-10-13 19:36:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:10,569 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 155 transitions. [2021-10-13 19:36:10,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 155 transitions. [2021-10-13 19:36:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:10,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:10,571 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:10,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:10,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 19:36:10,787 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash -658528872, now seen corresponding path program 1 times [2021-10-13 19:36:10,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:10,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693045336] [2021-10-13 19:36:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:10,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:11,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:11,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693045336] [2021-10-13 19:36:11,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693045336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:11,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673727319] [2021-10-13 19:36:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:11,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:11,058 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:11,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 19:36:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:11,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:36:11,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:11,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-10-13 19:36:11,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:36:11,438 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:11,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:36:11,551 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:11,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:36:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:11,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673727319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:11,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:11,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 17 [2021-10-13 19:36:11,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248335503] [2021-10-13 19:36:11,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:11,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:11,830 INFO L87 Difference]: Start difference. First operand 65 states and 155 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:12,436 INFO L93 Difference]: Finished difference Result 161 states and 383 transitions. [2021-10-13 19:36:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:36:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:12,439 INFO L225 Difference]: With dead ends: 161 [2021-10-13 19:36:12,439 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 19:36:12,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 491.1ms TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:36:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 19:36:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2021-10-13 19:36:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 2.511627906976744) internal successors, (324), 130 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 324 transitions. [2021-10-13 19:36:12,445 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 324 transitions. Word has length 13 [2021-10-13 19:36:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:12,446 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 324 transitions. [2021-10-13 19:36:12,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 324 transitions. [2021-10-13 19:36:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:12,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:12,447 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:12,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 19:36:12,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 19:36:12,661 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash -658528919, now seen corresponding path program 1 times [2021-10-13 19:36:12,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:12,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271640770] [2021-10-13 19:36:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:12,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:12,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:12,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271640770] [2021-10-13 19:36:12,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271640770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660770225] [2021-10-13 19:36:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:12,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:12,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:12,861 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:12,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 19:36:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:13,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:36:13,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:13,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 362 [2021-10-13 19:36:13,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 19:36:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:36:13,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 19:36:13,319 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:13,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 19:36:13,383 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:13,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 19:36:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:13,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660770225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:13,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:13,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-13 19:36:13,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028731200] [2021-10-13 19:36:13,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:36:13,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:36:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:36:13,604 INFO L87 Difference]: Start difference. First operand 131 states and 324 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:13,988 INFO L93 Difference]: Finished difference Result 244 states and 529 transitions. [2021-10-13 19:36:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:36:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:13,996 INFO L225 Difference]: With dead ends: 244 [2021-10-13 19:36:13,996 INFO L226 Difference]: Without dead ends: 201 [2021-10-13 19:36:13,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 360.8ms TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:36:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-13 19:36:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2021-10-13 19:36:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 2.5833333333333335) internal successors, (341), 133 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 341 transitions. [2021-10-13 19:36:14,005 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 341 transitions. Word has length 13 [2021-10-13 19:36:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:14,005 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 341 transitions. [2021-10-13 19:36:14,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 341 transitions. [2021-10-13 19:36:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:14,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:14,007 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:14,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 19:36:14,222 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash -639134978, now seen corresponding path program 1 times [2021-10-13 19:36:14,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:14,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434709518] [2021-10-13 19:36:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:14,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:14,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:14,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434709518] [2021-10-13 19:36:14,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434709518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:14,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165979737] [2021-10-13 19:36:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:14,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:14,645 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:14,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 19:36:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:14,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:36:14,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:14,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 259 [2021-10-13 19:36:15,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:36:15,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:15,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:15,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165979737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:15,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:15,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-13 19:36:15,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172778890] [2021-10-13 19:36:15,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:15,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:15,524 INFO L87 Difference]: Start difference. First operand 134 states and 341 transitions. Second operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:16,025 INFO L93 Difference]: Finished difference Result 167 states and 389 transitions. [2021-10-13 19:36:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:36:16,026 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:16,028 INFO L225 Difference]: With dead ends: 167 [2021-10-13 19:36:16,028 INFO L226 Difference]: Without dead ends: 167 [2021-10-13 19:36:16,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 520.6ms TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:36:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-13 19:36:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 142. [2021-10-13 19:36:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 2.492857142857143) internal successors, (349), 141 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 349 transitions. [2021-10-13 19:36:16,035 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 349 transitions. Word has length 13 [2021-10-13 19:36:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:16,036 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 349 transitions. [2021-10-13 19:36:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 349 transitions. [2021-10-13 19:36:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:16,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:16,037 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:16,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-13 19:36:16,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:16,252 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash -784593162, now seen corresponding path program 2 times [2021-10-13 19:36:16,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:16,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755584273] [2021-10-13 19:36:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:16,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:16,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:16,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755584273] [2021-10-13 19:36:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755584273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:16,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523866973] [2021-10-13 19:36:16,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:16,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:16,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:16,841 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:16,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 19:36:17,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:17,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:17,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:36:17,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:17,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:17,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:36:17,349 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:17,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:36:17,470 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:17,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:36:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:17,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523866973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:17,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:17,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:36:17,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440162220] [2021-10-13 19:36:17,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:17,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:17,906 INFO L87 Difference]: Start difference. First operand 142 states and 349 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:19,885 INFO L93 Difference]: Finished difference Result 171 states and 342 transitions. [2021-10-13 19:36:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:36:19,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:19,887 INFO L225 Difference]: With dead ends: 171 [2021-10-13 19:36:19,888 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 19:36:19,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1865.3ms TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:36:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 19:36:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2021-10-13 19:36:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 2.243478260869565) internal successors, (258), 118 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 258 transitions. [2021-10-13 19:36:19,895 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 258 transitions. Word has length 13 [2021-10-13 19:36:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:19,895 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 258 transitions. [2021-10-13 19:36:19,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 258 transitions. [2021-10-13 19:36:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:19,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:19,896 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:19,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:20,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:20,098 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash -784593209, now seen corresponding path program 2 times [2021-10-13 19:36:20,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:20,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789570841] [2021-10-13 19:36:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:20,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789570841] [2021-10-13 19:36:20,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789570841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944970403] [2021-10-13 19:36:20,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:20,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:20,492 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:20,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 19:36:20,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:20,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:20,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:36:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:20,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 19:36:20,926 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:20,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:21,014 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:21,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:21,120 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:21,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:21,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944970403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:21,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:21,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:36:21,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888725531] [2021-10-13 19:36:21,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:21,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:21,512 INFO L87 Difference]: Start difference. First operand 119 states and 258 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:22,962 INFO L93 Difference]: Finished difference Result 182 states and 353 transitions. [2021-10-13 19:36:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:36:22,963 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:22,965 INFO L225 Difference]: With dead ends: 182 [2021-10-13 19:36:22,965 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 19:36:22,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1290.8ms TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:36:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 19:36:22,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 115. [2021-10-13 19:36:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 2.2432432432432434) internal successors, (249), 114 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 249 transitions. [2021-10-13 19:36:22,977 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 249 transitions. Word has length 13 [2021-10-13 19:36:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:22,979 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 249 transitions. [2021-10-13 19:36:22,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 249 transitions. [2021-10-13 19:36:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:22,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:22,980 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:23,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:23,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:23,195 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -784592558, now seen corresponding path program 2 times [2021-10-13 19:36:23,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:23,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594143501] [2021-10-13 19:36:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:23,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:23,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:23,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594143501] [2021-10-13 19:36:23,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594143501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:23,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640757699] [2021-10-13 19:36:23,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:23,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:23,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:23,625 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:23,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 19:36:23,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:23,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:23,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:36:23,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:24,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:24,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:36:24,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:36:24,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:36:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:24,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640757699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:24,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:24,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:36:24,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211798348] [2021-10-13 19:36:24,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:24,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:24,516 INFO L87 Difference]: Start difference. First operand 115 states and 249 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:24,993 INFO L93 Difference]: Finished difference Result 158 states and 317 transitions. [2021-10-13 19:36:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:36:24,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:24,995 INFO L225 Difference]: With dead ends: 158 [2021-10-13 19:36:24,995 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 19:36:24,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 589.7ms TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:36:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 19:36:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 111. [2021-10-13 19:36:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 2.2523364485981308) internal successors, (241), 110 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 241 transitions. [2021-10-13 19:36:25,000 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 241 transitions. Word has length 13 [2021-10-13 19:36:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 241 transitions. [2021-10-13 19:36:25,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 241 transitions. [2021-10-13 19:36:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:25,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:25,001 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:25,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:25,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 19:36:25,212 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash -784582281, now seen corresponding path program 2 times [2021-10-13 19:36:25,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:25,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298954439] [2021-10-13 19:36:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:25,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:25,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:25,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298954439] [2021-10-13 19:36:25,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298954439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:25,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730764542] [2021-10-13 19:36:25,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:36:25,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:25,522 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:25,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 19:36:25,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:25,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:25,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:36:25,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:25,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 19:36:25,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:36:26,070 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:26,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:36:26,157 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:26,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:36:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730764542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:26,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:26,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:36:26,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177011528] [2021-10-13 19:36:26,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:26,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:26,483 INFO L87 Difference]: Start difference. First operand 111 states and 241 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:27,057 INFO L93 Difference]: Finished difference Result 132 states and 272 transitions. [2021-10-13 19:36:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:36:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:27,059 INFO L225 Difference]: With dead ends: 132 [2021-10-13 19:36:27,059 INFO L226 Difference]: Without dead ends: 130 [2021-10-13 19:36:27,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 577.3ms TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:36:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-13 19:36:27,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 115. [2021-10-13 19:36:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 2.225225225225225) internal successors, (247), 114 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 247 transitions. [2021-10-13 19:36:27,064 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 247 transitions. Word has length 13 [2021-10-13 19:36:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:27,064 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 247 transitions. [2021-10-13 19:36:27,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 247 transitions. [2021-10-13 19:36:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:27,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:27,065 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:27,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:27,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 19:36:27,266 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash -784582328, now seen corresponding path program 3 times [2021-10-13 19:36:27,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:27,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137792560] [2021-10-13 19:36:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:27,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:27,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:27,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137792560] [2021-10-13 19:36:27,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137792560] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:27,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022518564] [2021-10-13 19:36:27,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:27,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:27,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:27,582 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:27,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 19:36:27,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:36:27,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:36:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:28,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 19:36:28,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:36:28,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:36:28,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:36:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:28,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022518564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:28,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:28,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:36:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077424442] [2021-10-13 19:36:28,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:36:28,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:36:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:36:28,468 INFO L87 Difference]: Start difference. First operand 115 states and 247 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:28,888 INFO L93 Difference]: Finished difference Result 128 states and 266 transitions. [2021-10-13 19:36:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:36:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:28,890 INFO L225 Difference]: With dead ends: 128 [2021-10-13 19:36:28,890 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 19:36:28,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 471.5ms TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:36:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 19:36:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2021-10-13 19:36:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 2.2476190476190476) internal successors, (236), 108 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 236 transitions. [2021-10-13 19:36:28,895 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 236 transitions. Word has length 13 [2021-10-13 19:36:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:28,895 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 236 transitions. [2021-10-13 19:36:28,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 236 transitions. [2021-10-13 19:36:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:28,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:28,896 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:28,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-13 19:36:29,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:29,111 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:29,111 INFO L82 PathProgramCache]: Analyzing trace with hash -998493716, now seen corresponding path program 3 times [2021-10-13 19:36:29,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:29,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712332952] [2021-10-13 19:36:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:29,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:29,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:29,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712332952] [2021-10-13 19:36:29,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712332952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:29,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915108052] [2021-10-13 19:36:29,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:29,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:29,575 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:29,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 19:36:29,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:36:29,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:29,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:36:30,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:30,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:30,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:36:30,215 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:30,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:36:30,330 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:30,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:36:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:30,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915108052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:30,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:30,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:36:30,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369960822] [2021-10-13 19:36:30,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:30,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:30,736 INFO L87 Difference]: Start difference. First operand 109 states and 236 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:31,913 INFO L93 Difference]: Finished difference Result 129 states and 270 transitions. [2021-10-13 19:36:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:36:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:31,915 INFO L225 Difference]: With dead ends: 129 [2021-10-13 19:36:31,915 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 19:36:31,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1279.3ms TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:36:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 19:36:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2021-10-13 19:36:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 2.226086956521739) internal successors, (256), 118 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 256 transitions. [2021-10-13 19:36:31,920 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 256 transitions. Word has length 13 [2021-10-13 19:36:31,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:31,920 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 256 transitions. [2021-10-13 19:36:31,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 256 transitions. [2021-10-13 19:36:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:31,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:31,921 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:31,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:32,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 19:36:32,135 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash -998493763, now seen corresponding path program 3 times [2021-10-13 19:36:32,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:32,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975114165] [2021-10-13 19:36:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:32,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:32,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:32,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975114165] [2021-10-13 19:36:32,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975114165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:32,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385602649] [2021-10-13 19:36:32,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:32,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:32,439 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 19:36:32,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:36:32,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:32,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:36:32,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:32,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 19:36:33,015 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:33,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:33,099 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:33,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:33,207 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:33,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:33,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385602649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:33,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:33,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:36:33,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367825947] [2021-10-13 19:36:33,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:33,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:33,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:33,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:33,568 INFO L87 Difference]: Start difference. First operand 119 states and 256 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:34,491 INFO L93 Difference]: Finished difference Result 127 states and 264 transitions. [2021-10-13 19:36:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:36:34,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:34,493 INFO L225 Difference]: With dead ends: 127 [2021-10-13 19:36:34,493 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 19:36:34,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 983.0ms TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:36:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 19:36:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2021-10-13 19:36:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 2.225225225225225) internal successors, (247), 114 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 247 transitions. [2021-10-13 19:36:34,497 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 247 transitions. Word has length 13 [2021-10-13 19:36:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:34,498 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 247 transitions. [2021-10-13 19:36:34,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 247 transitions. [2021-10-13 19:36:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:34,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:34,499 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:34,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-13 19:36:34,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 19:36:34,714 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:34,715 INFO L82 PathProgramCache]: Analyzing trace with hash -998493112, now seen corresponding path program 4 times [2021-10-13 19:36:34,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:34,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375007836] [2021-10-13 19:36:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:34,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:35,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:35,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375007836] [2021-10-13 19:36:35,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375007836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:35,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873662395] [2021-10-13 19:36:35,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:36:35,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:35,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:35,007 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:35,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 19:36:35,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:36:35,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:35,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:36:35,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:35,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:36:35,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:36:35,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:35,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:36,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873662395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:36,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:36,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2021-10-13 19:36:36,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036544590] [2021-10-13 19:36:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:36,051 INFO L87 Difference]: Start difference. First operand 115 states and 247 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:36,976 INFO L93 Difference]: Finished difference Result 125 states and 264 transitions. [2021-10-13 19:36:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:36:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:36,977 INFO L225 Difference]: With dead ends: 125 [2021-10-13 19:36:36,978 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 19:36:36,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 991.9ms TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:36:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 19:36:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2021-10-13 19:36:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 2.2336448598130842) internal successors, (239), 110 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 239 transitions. [2021-10-13 19:36:36,983 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 239 transitions. Word has length 13 [2021-10-13 19:36:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:36,983 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 239 transitions. [2021-10-13 19:36:36,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 239 transitions. [2021-10-13 19:36:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:36,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:36,984 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:37,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 19:36:37,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 19:36:37,198 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash -998482835, now seen corresponding path program 3 times [2021-10-13 19:36:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:37,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882625752] [2021-10-13 19:36:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:37,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:37,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:37,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882625752] [2021-10-13 19:36:37,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882625752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:37,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111926578] [2021-10-13 19:36:37,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:36:37,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:37,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:37,489 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:37,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 19:36:37,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:36:37,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:37,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:36:37,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:38,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 19:36:38,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:36:38,127 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:38,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:36:38,220 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:36:38,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-13 19:36:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111926578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:38,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:36:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136554397] [2021-10-13 19:36:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:38,536 INFO L87 Difference]: Start difference. First operand 111 states and 239 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:39,317 INFO L93 Difference]: Finished difference Result 128 states and 258 transitions. [2021-10-13 19:36:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:36:39,318 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:39,319 INFO L225 Difference]: With dead ends: 128 [2021-10-13 19:36:39,319 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 19:36:39,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 820.3ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:36:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 19:36:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2021-10-13 19:36:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 2.2072072072072073) internal successors, (245), 114 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 245 transitions. [2021-10-13 19:36:39,324 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 245 transitions. Word has length 13 [2021-10-13 19:36:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:39,324 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 245 transitions. [2021-10-13 19:36:39,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 245 transitions. [2021-10-13 19:36:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:39,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:39,325 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:39,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:39,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 19:36:39,539 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:39,539 INFO L82 PathProgramCache]: Analyzing trace with hash -998482882, now seen corresponding path program 5 times [2021-10-13 19:36:39,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:39,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137716347] [2021-10-13 19:36:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:39,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:39,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:39,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137716347] [2021-10-13 19:36:39,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137716347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:39,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802249712] [2021-10-13 19:36:39,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:36:39,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:39,871 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:39,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 19:36:40,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:40,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:40,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:36:40,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:40,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 157 [2021-10-13 19:36:40,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:36:40,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:40,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:40,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802249712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:40,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:40,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:36:40,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038294717] [2021-10-13 19:36:40,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:36:40,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:40,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:36:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:36:40,773 INFO L87 Difference]: Start difference. First operand 115 states and 245 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:41,296 INFO L93 Difference]: Finished difference Result 115 states and 243 transitions. [2021-10-13 19:36:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:36:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:41,298 INFO L225 Difference]: With dead ends: 115 [2021-10-13 19:36:41,298 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 19:36:41,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 651.3ms TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:36:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 19:36:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-10-13 19:36:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 2.237623762376238) internal successors, (226), 104 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 226 transitions. [2021-10-13 19:36:41,303 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 226 transitions. Word has length 13 [2021-10-13 19:36:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:41,303 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 226 transitions. [2021-10-13 19:36:41,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 226 transitions. [2021-10-13 19:36:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:41,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:41,304 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:41,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:41,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 19:36:41,515 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash -688613086, now seen corresponding path program 4 times [2021-10-13 19:36:41,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:41,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865787177] [2021-10-13 19:36:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:41,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:41,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:41,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865787177] [2021-10-13 19:36:41,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865787177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:41,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566129457] [2021-10-13 19:36:41,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:36:41,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:41,947 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:41,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 19:36:42,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:36:42,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:42,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:36:42,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:42,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 143 [2021-10-13 19:36:42,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:42,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:36:42,670 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:42,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:42,991 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 19:36:42,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 48 [2021-10-13 19:36:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:43,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566129457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:43,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:43,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-13 19:36:43,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982805968] [2021-10-13 19:36:43,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:36:43,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:43,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:36:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:36:43,198 INFO L87 Difference]: Start difference. First operand 105 states and 226 transitions. Second operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:44,637 INFO L93 Difference]: Finished difference Result 133 states and 265 transitions. [2021-10-13 19:36:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:36:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:44,639 INFO L225 Difference]: With dead ends: 133 [2021-10-13 19:36:44,639 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 19:36:44,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1458.8ms TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:36:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 19:36:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2021-10-13 19:36:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 122 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 257 transitions. [2021-10-13 19:36:44,644 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 257 transitions. Word has length 13 [2021-10-13 19:36:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:44,644 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 257 transitions. [2021-10-13 19:36:44,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 257 transitions. [2021-10-13 19:36:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:44,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:44,646 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:44,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:44,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-13 19:36:44,860 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash -688613133, now seen corresponding path program 4 times [2021-10-13 19:36:44,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:44,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323317562] [2021-10-13 19:36:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:44,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:45,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:45,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323317562] [2021-10-13 19:36:45,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323317562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:45,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001558109] [2021-10-13 19:36:45,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:36:45,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:45,320 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:45,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 19:36:45,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:36:45,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:36:45,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:45,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:36:45,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 19:36:46,049 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:46,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:46,132 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:46,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:46,435 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:36:46,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 54 [2021-10-13 19:36:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:46,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001558109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:46,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:46,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:36:46,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346454911] [2021-10-13 19:36:46,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:46,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:46,758 INFO L87 Difference]: Start difference. First operand 123 states and 257 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:48,771 INFO L93 Difference]: Finished difference Result 131 states and 265 transitions. [2021-10-13 19:36:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:36:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:48,775 INFO L225 Difference]: With dead ends: 131 [2021-10-13 19:36:48,775 INFO L226 Difference]: Without dead ends: 117 [2021-10-13 19:36:48,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1207.3ms TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:36:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-13 19:36:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2021-10-13 19:36:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 2.219047619047619) internal successors, (233), 108 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 233 transitions. [2021-10-13 19:36:48,781 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 233 transitions. Word has length 13 [2021-10-13 19:36:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:48,781 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 233 transitions. [2021-10-13 19:36:48,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 233 transitions. [2021-10-13 19:36:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:48,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:48,783 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:48,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:48,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:48,993 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -641513562, now seen corresponding path program 6 times [2021-10-13 19:36:48,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:48,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029179829] [2021-10-13 19:36:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:48,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:49,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:49,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029179829] [2021-10-13 19:36:49,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029179829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:49,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149959312] [2021-10-13 19:36:49,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:36:49,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:49,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:49,397 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:49,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 19:36:49,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:36:50,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:50,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:36:50,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:50,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 171 [2021-10-13 19:36:50,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:36:50,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:50,322 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:50,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:36:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:50,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149959312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:50,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:50,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:36:50,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254356704] [2021-10-13 19:36:50,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:36:50,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:36:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:36:50,591 INFO L87 Difference]: Start difference. First operand 109 states and 233 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:51,657 INFO L93 Difference]: Finished difference Result 136 states and 272 transitions. [2021-10-13 19:36:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:36:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:51,659 INFO L225 Difference]: With dead ends: 136 [2021-10-13 19:36:51,659 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 19:36:51,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1139.1ms TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:36:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 19:36:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2021-10-13 19:36:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 2.219047619047619) internal successors, (233), 108 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 233 transitions. [2021-10-13 19:36:51,663 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 233 transitions. Word has length 13 [2021-10-13 19:36:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:51,664 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 233 transitions. [2021-10-13 19:36:51,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 233 transitions. [2021-10-13 19:36:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:51,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:51,665 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:51,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:51,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:51,879 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:51,879 INFO L82 PathProgramCache]: Analyzing trace with hash -786971746, now seen corresponding path program 5 times [2021-10-13 19:36:51,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:51,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514452072] [2021-10-13 19:36:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:51,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:52,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:52,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514452072] [2021-10-13 19:36:52,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514452072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:52,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925756046] [2021-10-13 19:36:52,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:36:52,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:52,201 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:52,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 19:36:52,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:52,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:52,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:36:52,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:52,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2021-10-13 19:36:52,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:52,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:36:52,988 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:52,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:36:53,190 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 19:36:53,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-10-13 19:36:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:53,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925756046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:53,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:53,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-13 19:36:53,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032935470] [2021-10-13 19:36:53,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:36:53,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:36:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:36:53,521 INFO L87 Difference]: Start difference. First operand 109 states and 233 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:54,817 INFO L93 Difference]: Finished difference Result 123 states and 250 transitions. [2021-10-13 19:36:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:36:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:54,819 INFO L225 Difference]: With dead ends: 123 [2021-10-13 19:36:54,819 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 19:36:54,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1292.9ms TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:36:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 19:36:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2021-10-13 19:36:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 2.18348623853211) internal successors, (238), 112 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 238 transitions. [2021-10-13 19:36:54,824 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 238 transitions. Word has length 13 [2021-10-13 19:36:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:54,824 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 238 transitions. [2021-10-13 19:36:54,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 238 transitions. [2021-10-13 19:36:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:54,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:54,825 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:54,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:55,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:55,037 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash -786971793, now seen corresponding path program 5 times [2021-10-13 19:36:55,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:55,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809245270] [2021-10-13 19:36:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:55,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:55,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:55,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809245270] [2021-10-13 19:36:55,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809245270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:55,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319868970] [2021-10-13 19:36:55,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:36:55,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:55,347 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:55,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 19:36:55,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:36:55,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:36:55,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:36:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:55,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2021-10-13 19:36:56,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 19:36:56,123 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:56,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:56,201 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:56,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:56,370 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:36:56,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-13 19:36:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:56,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319868970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:56,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:56,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-13 19:36:56,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550776596] [2021-10-13 19:36:56,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:36:56,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:56,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:36:56,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:36:56,722 INFO L87 Difference]: Start difference. First operand 113 states and 238 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:36:57,736 INFO L93 Difference]: Finished difference Result 115 states and 235 transitions. [2021-10-13 19:36:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:36:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:36:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:36:57,738 INFO L225 Difference]: With dead ends: 115 [2021-10-13 19:36:57,738 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 19:36:57,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1070.7ms TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:36:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 19:36:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-13 19:36:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 108 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2021-10-13 19:36:57,742 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 13 [2021-10-13 19:36:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:36:57,742 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2021-10-13 19:36:57,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:36:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2021-10-13 19:36:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:36:57,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:36:57,743 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:36:57,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:36:57,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:57,952 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:36:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:36:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash -786971142, now seen corresponding path program 7 times [2021-10-13 19:36:57,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:36:57,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418461055] [2021-10-13 19:36:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:36:57,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:36:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:58,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:36:58,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418461055] [2021-10-13 19:36:58,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418461055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:58,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173144516] [2021-10-13 19:36:58,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:36:58,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:36:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:36:58,663 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:36:58,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 19:36:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:36:59,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:36:59,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:36:59,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 181 [2021-10-13 19:36:59,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:36:59,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:36:59,630 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:36:59,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:36:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:36:59,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173144516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:36:59,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:36:59,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-13 19:36:59,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888332466] [2021-10-13 19:36:59,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:36:59,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:36:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:36:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:36:59,927 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:00,958 INFO L93 Difference]: Finished difference Result 109 states and 227 transitions. [2021-10-13 19:37:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:37:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:37:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:00,959 INFO L225 Difference]: With dead ends: 109 [2021-10-13 19:37:00,959 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 19:37:00,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1209.5ms TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:37:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 19:37:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-10-13 19:37:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 2.1881188118811883) internal successors, (221), 104 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 221 transitions. [2021-10-13 19:37:00,963 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 221 transitions. Word has length 13 [2021-10-13 19:37:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:00,963 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 221 transitions. [2021-10-13 19:37:00,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 221 transitions. [2021-10-13 19:37:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:37:00,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:00,964 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:00,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-13 19:37:01,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:01,165 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash -786960912, now seen corresponding path program 8 times [2021-10-13 19:37:01,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:01,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778499813] [2021-10-13 19:37:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:01,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:01,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:01,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778499813] [2021-10-13 19:37:01,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778499813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:01,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090097861] [2021-10-13 19:37:01,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:37:01,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:01,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:01,758 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:01,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 19:37:02,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:37:02,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:02,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:37:02,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:02,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 113 [2021-10-13 19:37:02,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 19:37:02,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:37:02,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:37:02,788 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:37:02,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:37:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090097861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:03,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:03,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:37:03,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495176704] [2021-10-13 19:37:03,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:03,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:03,069 INFO L87 Difference]: Start difference. First operand 105 states and 221 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:03,780 INFO L93 Difference]: Finished difference Result 115 states and 236 transitions. [2021-10-13 19:37:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:37:03,780 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:37:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:03,781 INFO L225 Difference]: With dead ends: 115 [2021-10-13 19:37:03,781 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 19:37:03,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 838.0ms TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:37:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 19:37:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2021-10-13 19:37:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 2.1881188118811883) internal successors, (221), 104 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 221 transitions. [2021-10-13 19:37:03,786 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 221 transitions. Word has length 13 [2021-10-13 19:37:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:03,786 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 221 transitions. [2021-10-13 19:37:03,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 221 transitions. [2021-10-13 19:37:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:37:03,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:03,787 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:03,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:04,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 19:37:04,001 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:04,001 INFO L82 PathProgramCache]: Analyzing trace with hash -87400962, now seen corresponding path program 9 times [2021-10-13 19:37:04,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:04,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830486763] [2021-10-13 19:37:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:04,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:04,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:04,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830486763] [2021-10-13 19:37:04,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830486763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:04,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009284225] [2021-10-13 19:37:04,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:37:04,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:04,421 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:04,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 19:37:05,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:37:05,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:05,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:37:05,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:05,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:37:05,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:37:05,555 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 19:37:05,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 54 [2021-10-13 19:37:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:05,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009284225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:05,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:05,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:37:05,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276463076] [2021-10-13 19:37:05,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:05,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:05,809 INFO L87 Difference]: Start difference. First operand 105 states and 221 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:06,598 INFO L93 Difference]: Finished difference Result 111 states and 226 transitions. [2021-10-13 19:37:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:37:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:37:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:06,600 INFO L225 Difference]: With dead ends: 111 [2021-10-13 19:37:06,600 INFO L226 Difference]: Without dead ends: 85 [2021-10-13 19:37:06,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 937.7ms TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:37:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-13 19:37:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-13 19:37:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 2.259259259259259) internal successors, (183), 84 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 183 transitions. [2021-10-13 19:37:06,603 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 183 transitions. Word has length 13 [2021-10-13 19:37:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:06,603 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 183 transitions. [2021-10-13 19:37:06,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 183 transitions. [2021-10-13 19:37:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:06,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:06,604 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:06,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:06,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 19:37:06,818 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash 440873741, now seen corresponding path program 6 times [2021-10-13 19:37:06,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:06,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272815037] [2021-10-13 19:37:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:06,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:07,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:07,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272815037] [2021-10-13 19:37:07,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272815037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:07,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841550538] [2021-10-13 19:37:07,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:37:07,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:07,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:07,169 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:07,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 19:37:07,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:37:07,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:37:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:07,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841550538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:07,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:07,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-13 19:37:07,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645308407] [2021-10-13 19:37:07,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:37:07,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:37:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:37:07,979 INFO L87 Difference]: Start difference. First operand 85 states and 183 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:08,392 INFO L93 Difference]: Finished difference Result 169 states and 329 transitions. [2021-10-13 19:37:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:37:08,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:08,395 INFO L225 Difference]: With dead ends: 169 [2021-10-13 19:37:08,395 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 19:37:08,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 445.3ms TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:37:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 19:37:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 102. [2021-10-13 19:37:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.2448979591836733) internal successors, (220), 101 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 220 transitions. [2021-10-13 19:37:08,400 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 220 transitions. Word has length 14 [2021-10-13 19:37:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:08,400 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 220 transitions. [2021-10-13 19:37:08,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 220 transitions. [2021-10-13 19:37:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:08,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:08,401 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:08,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:08,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:08,616 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:08,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash 440873694, now seen corresponding path program 6 times [2021-10-13 19:37:08,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:08,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845146603] [2021-10-13 19:37:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:08,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:08,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:08,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845146603] [2021-10-13 19:37:08,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845146603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:08,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24278523] [2021-10-13 19:37:08,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:37:08,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:08,891 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:08,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 19:37:09,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:37:09,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 19:37:09,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:09,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:37:09,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:37:09,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:37:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:10,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24278523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:10,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:10,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2021-10-13 19:37:10,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274008488] [2021-10-13 19:37:10,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:10,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:10,282 INFO L87 Difference]: Start difference. First operand 102 states and 220 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:11,261 INFO L93 Difference]: Finished difference Result 198 states and 405 transitions. [2021-10-13 19:37:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:37:11,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:11,263 INFO L225 Difference]: With dead ends: 198 [2021-10-13 19:37:11,264 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 19:37:11,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 885.6ms TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:37:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 19:37:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2021-10-13 19:37:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 2.283464566929134) internal successors, (290), 130 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 290 transitions. [2021-10-13 19:37:11,270 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 290 transitions. Word has length 14 [2021-10-13 19:37:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:11,270 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 290 transitions. [2021-10-13 19:37:11,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 290 transitions. [2021-10-13 19:37:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:11,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:11,271 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:11,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:11,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 19:37:11,476 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 460267682, now seen corresponding path program 4 times [2021-10-13 19:37:11,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:11,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189591831] [2021-10-13 19:37:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:11,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:11,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:11,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189591831] [2021-10-13 19:37:11,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189591831] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:11,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448513843] [2021-10-13 19:37:11,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:37:11,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:11,995 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:11,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 19:37:12,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:37:12,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:12,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:37:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:13,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448513843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:13,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:13,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-13 19:37:13,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189755264] [2021-10-13 19:37:13,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:37:13,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:37:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:37:13,025 INFO L87 Difference]: Start difference. First operand 131 states and 290 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:13,674 INFO L93 Difference]: Finished difference Result 206 states and 475 transitions. [2021-10-13 19:37:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:37:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:13,678 INFO L225 Difference]: With dead ends: 206 [2021-10-13 19:37:13,678 INFO L226 Difference]: Without dead ends: 206 [2021-10-13 19:37:13,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 563.8ms TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:37:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-13 19:37:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 157. [2021-10-13 19:37:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 153 states have (on average 2.4052287581699345) internal successors, (368), 156 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 368 transitions. [2021-10-13 19:37:13,684 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 368 transitions. Word has length 14 [2021-10-13 19:37:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:13,684 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 368 transitions. [2021-10-13 19:37:13,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 368 transitions. [2021-10-13 19:37:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:13,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:13,686 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:13,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:13,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:13,900 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash 460267635, now seen corresponding path program 10 times [2021-10-13 19:37:13,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:13,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671593478] [2021-10-13 19:37:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:13,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:14,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:14,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671593478] [2021-10-13 19:37:14,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671593478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:14,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491964067] [2021-10-13 19:37:14,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:37:14,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:14,437 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:14,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 19:37:15,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:37:15,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:15,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:37:15,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:15,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491964067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:15,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:15,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:37:15,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664174712] [2021-10-13 19:37:15,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:15,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:15,496 INFO L87 Difference]: Start difference. First operand 157 states and 368 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:16,313 INFO L93 Difference]: Finished difference Result 261 states and 615 transitions. [2021-10-13 19:37:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:37:16,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:16,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:16,316 INFO L225 Difference]: With dead ends: 261 [2021-10-13 19:37:16,316 INFO L226 Difference]: Without dead ends: 261 [2021-10-13 19:37:16,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 676.6ms TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:37:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-13 19:37:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 174. [2021-10-13 19:37:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 2.411764705882353) internal successors, (410), 173 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 410 transitions. [2021-10-13 19:37:16,323 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 410 transitions. Word has length 14 [2021-10-13 19:37:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:16,323 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 410 transitions. [2021-10-13 19:37:16,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 410 transitions. [2021-10-13 19:37:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:16,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:16,324 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:16,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-13 19:37:16,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:16,538 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash 314809451, now seen corresponding path program 7 times [2021-10-13 19:37:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:16,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174711278] [2021-10-13 19:37:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:16,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:17,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:17,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174711278] [2021-10-13 19:37:17,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174711278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:17,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052004298] [2021-10-13 19:37:17,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:37:17,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:17,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:17,460 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:17,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 19:37:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:18,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:37:18,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:18,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052004298] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:18,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:18,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2021-10-13 19:37:18,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30772538] [2021-10-13 19:37:18,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:37:18,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:37:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:37:18,455 INFO L87 Difference]: Start difference. First operand 174 states and 410 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:19,418 INFO L93 Difference]: Finished difference Result 258 states and 582 transitions. [2021-10-13 19:37:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:37:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:19,421 INFO L225 Difference]: With dead ends: 258 [2021-10-13 19:37:19,422 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 19:37:19,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1025.2ms TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:37:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 19:37:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 174. [2021-10-13 19:37:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 2.411764705882353) internal successors, (410), 173 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 410 transitions. [2021-10-13 19:37:19,426 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 410 transitions. Word has length 14 [2021-10-13 19:37:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:19,426 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 410 transitions. [2021-10-13 19:37:19,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 410 transitions. [2021-10-13 19:37:19,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:19,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:19,428 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:19,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:19,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-10-13 19:37:19,643 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:19,643 INFO L82 PathProgramCache]: Analyzing trace with hash 314809404, now seen corresponding path program 7 times [2021-10-13 19:37:19,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:19,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933707130] [2021-10-13 19:37:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:19,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:19,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:19,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933707130] [2021-10-13 19:37:19,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933707130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:19,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321823402] [2021-10-13 19:37:19,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:37:19,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:19,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:19,962 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:19,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 19:37:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:20,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:37:20,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:20,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321823402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:20,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:20,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-13 19:37:20,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478591538] [2021-10-13 19:37:20,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:37:20,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:37:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:37:20,945 INFO L87 Difference]: Start difference. First operand 174 states and 410 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:21,389 INFO L93 Difference]: Finished difference Result 202 states and 452 transitions. [2021-10-13 19:37:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:37:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:21,392 INFO L225 Difference]: With dead ends: 202 [2021-10-13 19:37:21,392 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 19:37:21,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 497.4ms TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:37:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 19:37:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 174. [2021-10-13 19:37:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 2.388235294117647) internal successors, (406), 173 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2021-10-13 19:37:21,399 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 14 [2021-10-13 19:37:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:21,399 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2021-10-13 19:37:21,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2021-10-13 19:37:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:21,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:21,401 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:21,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:21,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:37:21,615 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash 314810102, now seen corresponding path program 5 times [2021-10-13 19:37:21,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:21,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062401635] [2021-10-13 19:37:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:21,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:21,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:21,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062401635] [2021-10-13 19:37:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062401635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:21,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250035565] [2021-10-13 19:37:21,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:37:21,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:21,928 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:21,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 19:37:22,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:37:22,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:22,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:37:22,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:22,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250035565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:22,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:22,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-13 19:37:22,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095259717] [2021-10-13 19:37:22,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:37:22,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:37:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:37:22,974 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:23,912 INFO L93 Difference]: Finished difference Result 274 states and 657 transitions. [2021-10-13 19:37:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:37:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:23,915 INFO L225 Difference]: With dead ends: 274 [2021-10-13 19:37:23,915 INFO L226 Difference]: Without dead ends: 274 [2021-10-13 19:37:23,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 798.8ms TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:37:23,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-13 19:37:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 186. [2021-10-13 19:37:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 2.434065934065934) internal successors, (443), 185 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 443 transitions. [2021-10-13 19:37:23,921 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 443 transitions. Word has length 14 [2021-10-13 19:37:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:23,922 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 443 transitions. [2021-10-13 19:37:23,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 443 transitions. [2021-10-13 19:37:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:23,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:23,923 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:23,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-13 19:37:24,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 19:37:24,138 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash 314810055, now seen corresponding path program 11 times [2021-10-13 19:37:24,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:24,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656699137] [2021-10-13 19:37:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:24,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:24,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656699137] [2021-10-13 19:37:24,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656699137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557956253] [2021-10-13 19:37:24,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:37:24,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:24,745 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:24,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 19:37:25,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:37:25,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:37:25,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:25,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557956253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:25,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:25,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-13 19:37:25,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790210291] [2021-10-13 19:37:25,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:37:25,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:25,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:37:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:37:25,839 INFO L87 Difference]: Start difference. First operand 186 states and 443 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:26,775 INFO L93 Difference]: Finished difference Result 262 states and 617 transitions. [2021-10-13 19:37:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:37:26,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:26,778 INFO L225 Difference]: With dead ends: 262 [2021-10-13 19:37:26,778 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 19:37:26,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1048.2ms TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:37:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 19:37:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 192. [2021-10-13 19:37:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 188 states have (on average 2.4361702127659575) internal successors, (458), 191 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 458 transitions. [2021-10-13 19:37:26,784 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 458 transitions. Word has length 14 [2021-10-13 19:37:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:26,785 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 458 transitions. [2021-10-13 19:37:26,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 458 transitions. [2021-10-13 19:37:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:26,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:26,786 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:26,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:27,000 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash 314820285, now seen corresponding path program 12 times [2021-10-13 19:37:27,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:27,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079016129] [2021-10-13 19:37:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:27,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:27,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:27,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079016129] [2021-10-13 19:37:27,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079016129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:27,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681872120] [2021-10-13 19:37:27,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:37:27,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:27,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:27,603 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:27,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 19:37:28,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:37:28,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:28,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:37:28,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:28,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681872120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:28,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:28,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:37:28,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043859807] [2021-10-13 19:37:28,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:28,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:28,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:28,981 INFO L87 Difference]: Start difference. First operand 192 states and 458 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:29,379 INFO L93 Difference]: Finished difference Result 222 states and 539 transitions. [2021-10-13 19:37:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:37:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:29,382 INFO L225 Difference]: With dead ends: 222 [2021-10-13 19:37:29,382 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 19:37:29,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 560.7ms TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:37:29,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 19:37:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 200. [2021-10-13 19:37:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 2.489795918367347) internal successors, (488), 199 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 488 transitions. [2021-10-13 19:37:29,387 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 488 transitions. Word has length 14 [2021-10-13 19:37:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:29,387 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 488 transitions. [2021-10-13 19:37:29,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 488 transitions. [2021-10-13 19:37:29,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:29,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:29,388 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:29,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:29,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 19:37:29,589 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 100909501, now seen corresponding path program 13 times [2021-10-13 19:37:29,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:29,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732163546] [2021-10-13 19:37:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:29,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:30,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732163546] [2021-10-13 19:37:30,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732163546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:30,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166767119] [2021-10-13 19:37:30,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:37:30,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:30,142 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:30,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 19:37:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:31,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:37:31,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:31,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166767119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:31,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:31,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:37:31,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461455605] [2021-10-13 19:37:31,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:31,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:31,345 INFO L87 Difference]: Start difference. First operand 200 states and 488 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:32,425 INFO L93 Difference]: Finished difference Result 258 states and 626 transitions. [2021-10-13 19:37:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:37:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:32,428 INFO L225 Difference]: With dead ends: 258 [2021-10-13 19:37:32,428 INFO L226 Difference]: Without dead ends: 254 [2021-10-13 19:37:32,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1173.6ms TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:37:32,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-13 19:37:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-10-13 19:37:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 2.518348623853211) internal successors, (549), 221 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 549 transitions. [2021-10-13 19:37:32,435 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 549 transitions. Word has length 14 [2021-10-13 19:37:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 549 transitions. [2021-10-13 19:37:32,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 549 transitions. [2021-10-13 19:37:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:32,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:32,436 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:32,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-13 19:37:32,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:32,643 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:32,643 INFO L82 PathProgramCache]: Analyzing trace with hash 100919731, now seen corresponding path program 14 times [2021-10-13 19:37:32,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:32,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626814271] [2021-10-13 19:37:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:32,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:33,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:33,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626814271] [2021-10-13 19:37:33,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626814271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:33,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553047492] [2021-10-13 19:37:33,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:37:33,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:33,263 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:33,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 19:37:34,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:37:34,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:34,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:37:34,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:34,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553047492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:34,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:34,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-13 19:37:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433797420] [2021-10-13 19:37:34,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:37:34,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:37:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:37:34,386 INFO L87 Difference]: Start difference. First operand 222 states and 549 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:35,087 INFO L93 Difference]: Finished difference Result 280 states and 681 transitions. [2021-10-13 19:37:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:37:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:35,094 INFO L225 Difference]: With dead ends: 280 [2021-10-13 19:37:35,094 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 19:37:35,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 771.0ms TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:37:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 19:37:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2021-10-13 19:37:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 2.5272727272727273) internal successors, (556), 223 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 556 transitions. [2021-10-13 19:37:35,101 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 556 transitions. Word has length 14 [2021-10-13 19:37:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:35,102 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 556 transitions. [2021-10-13 19:37:35,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 556 transitions. [2021-10-13 19:37:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:35,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:35,103 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:35,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-13 19:37:35,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 19:37:35,306 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash 410789527, now seen corresponding path program 8 times [2021-10-13 19:37:35,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:35,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800256201] [2021-10-13 19:37:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:35,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:35,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:35,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800256201] [2021-10-13 19:37:35,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800256201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:35,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359473014] [2021-10-13 19:37:35,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:37:35,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:35,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:35,652 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:35,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 19:37:36,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:37:36,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:36,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:37:36,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:36,709 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:37:36,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-13 19:37:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:36,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359473014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:36,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:36,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-13 19:37:36,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905915526] [2021-10-13 19:37:36,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:37:36,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:37:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:37:36,774 INFO L87 Difference]: Start difference. First operand 224 states and 556 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:37,481 INFO L93 Difference]: Finished difference Result 280 states and 641 transitions. [2021-10-13 19:37:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:37:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:37,484 INFO L225 Difference]: With dead ends: 280 [2021-10-13 19:37:37,484 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 19:37:37,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 692.3ms TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:37:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 19:37:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 225. [2021-10-13 19:37:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 221 states have (on average 2.520361990950226) internal successors, (557), 224 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 557 transitions. [2021-10-13 19:37:37,492 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 557 transitions. Word has length 14 [2021-10-13 19:37:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:37,492 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 557 transitions. [2021-10-13 19:37:37,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 557 transitions. [2021-10-13 19:37:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:37,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:37,493 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:37,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:37,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 19:37:37,699 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 410789480, now seen corresponding path program 8 times [2021-10-13 19:37:37,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:37,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320188233] [2021-10-13 19:37:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:37,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:38,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:38,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320188233] [2021-10-13 19:37:38,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320188233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:38,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621307183] [2021-10-13 19:37:38,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:37:38,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:38,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:38,130 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:38,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 19:37:39,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:37:39,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:39,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:37:39,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:39,275 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:37:39,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-13 19:37:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:39,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621307183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:39,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:39,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-13 19:37:39,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13990532] [2021-10-13 19:37:39,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:37:39,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:37:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:37:39,345 INFO L87 Difference]: Start difference. First operand 225 states and 557 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:40,127 INFO L93 Difference]: Finished difference Result 267 states and 611 transitions. [2021-10-13 19:37:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:37:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:40,129 INFO L225 Difference]: With dead ends: 267 [2021-10-13 19:37:40,129 INFO L226 Difference]: Without dead ends: 239 [2021-10-13 19:37:40,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 737.7ms TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:37:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-13 19:37:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 199. [2021-10-13 19:37:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 195 states have (on average 2.4307692307692306) internal successors, (474), 198 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 474 transitions. [2021-10-13 19:37:40,134 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 474 transitions. Word has length 14 [2021-10-13 19:37:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:40,135 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 474 transitions. [2021-10-13 19:37:40,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 474 transitions. [2021-10-13 19:37:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:40,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:40,136 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:40,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-13 19:37:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:40,350 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash 457889051, now seen corresponding path program 15 times [2021-10-13 19:37:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:40,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96918731] [2021-10-13 19:37:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:40,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:41,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:41,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96918731] [2021-10-13 19:37:41,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96918731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:41,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037439724] [2021-10-13 19:37:41,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:37:41,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:41,042 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:41,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 19:37:41,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:37:41,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 19:37:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:41,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:37:42,133 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:37:42,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:37:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:37:42,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037439724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:42,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:42,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-13 19:37:42,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290192356] [2021-10-13 19:37:42,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:37:42,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:37:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:37:42,307 INFO L87 Difference]: Start difference. First operand 199 states and 474 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:43,141 INFO L93 Difference]: Finished difference Result 313 states and 722 transitions. [2021-10-13 19:37:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:37:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:43,145 INFO L225 Difference]: With dead ends: 313 [2021-10-13 19:37:43,145 INFO L226 Difference]: Without dead ends: 313 [2021-10-13 19:37:43,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 803.7ms TimeCoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:37:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-10-13 19:37:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 191. [2021-10-13 19:37:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 2.4385026737967914) internal successors, (456), 190 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 456 transitions. [2021-10-13 19:37:43,150 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 456 transitions. Word has length 14 [2021-10-13 19:37:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:43,150 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 456 transitions. [2021-10-13 19:37:43,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 456 transitions. [2021-10-13 19:37:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:43,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:43,151 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:43,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:43,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:43,363 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:43,363 INFO L82 PathProgramCache]: Analyzing trace with hash 312431471, now seen corresponding path program 16 times [2021-10-13 19:37:43,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:43,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013509530] [2021-10-13 19:37:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:43,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:44,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:44,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013509530] [2021-10-13 19:37:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013509530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:44,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152871432] [2021-10-13 19:37:44,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:37:44,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:44,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:44,088 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:44,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 19:37:44,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:37:44,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:44,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:37:44,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:44,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:37:45,249 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:37:45,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:37:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:45,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152871432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:45,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:45,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-13 19:37:45,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874190078] [2021-10-13 19:37:45,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:37:45,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:37:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:37:45,449 INFO L87 Difference]: Start difference. First operand 191 states and 456 transitions. Second operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:46,900 INFO L93 Difference]: Finished difference Result 279 states and 654 transitions. [2021-10-13 19:37:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:37:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:46,903 INFO L225 Difference]: With dead ends: 279 [2021-10-13 19:37:46,904 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 19:37:46,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1527.1ms TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:37:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 19:37:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 193. [2021-10-13 19:37:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 2.439153439153439) internal successors, (461), 192 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 461 transitions. [2021-10-13 19:37:46,910 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 461 transitions. Word has length 14 [2021-10-13 19:37:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:46,911 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 461 transitions. [2021-10-13 19:37:46,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 461 transitions. [2021-10-13 19:37:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:46,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:46,912 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:46,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:47,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:47,127 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash 312441701, now seen corresponding path program 17 times [2021-10-13 19:37:47,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:47,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405054909] [2021-10-13 19:37:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:47,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:47,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:47,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405054909] [2021-10-13 19:37:47,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405054909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:47,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559807365] [2021-10-13 19:37:47,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:37:47,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:47,925 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:47,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 19:37:48,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:37:48,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:48,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:37:48,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:48,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 530 treesize of output 514 [2021-10-13 19:37:49,056 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:37:49,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:37:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:37:49,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559807365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:49,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:49,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-13 19:37:49,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328492363] [2021-10-13 19:37:49,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:37:49,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:37:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:37:49,238 INFO L87 Difference]: Start difference. First operand 193 states and 461 transitions. Second operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:50,226 INFO L93 Difference]: Finished difference Result 251 states and 598 transitions. [2021-10-13 19:37:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:37:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:50,228 INFO L225 Difference]: With dead ends: 251 [2021-10-13 19:37:50,228 INFO L226 Difference]: Without dead ends: 251 [2021-10-13 19:37:50,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1059.5ms TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:37:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-13 19:37:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 186. [2021-10-13 19:37:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 2.4395604395604398) internal successors, (444), 185 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 444 transitions. [2021-10-13 19:37:50,235 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 444 transitions. Word has length 14 [2021-10-13 19:37:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:50,235 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 444 transitions. [2021-10-13 19:37:50,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 444 transitions. [2021-10-13 19:37:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:50,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:50,245 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:50,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:50,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-13 19:37:50,446 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1012001698, now seen corresponding path program 6 times [2021-10-13 19:37:50,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:50,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265220503] [2021-10-13 19:37:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:50,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:51,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:51,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265220503] [2021-10-13 19:37:51,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265220503] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:51,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501516823] [2021-10-13 19:37:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:37:51,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:51,487 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 19:37:52,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:37:52,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:52,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:37:52,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:52,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:37:52,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:37:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:37:52,947 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-13 19:37:52,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-13 19:37:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:53,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501516823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:53,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:53,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-13 19:37:53,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124037666] [2021-10-13 19:37:53,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:37:53,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:37:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:37:53,335 INFO L87 Difference]: Start difference. First operand 186 states and 444 transitions. Second operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:54,070 INFO L93 Difference]: Finished difference Result 304 states and 752 transitions. [2021-10-13 19:37:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:37:54,071 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:54,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:54,073 INFO L225 Difference]: With dead ends: 304 [2021-10-13 19:37:54,073 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 19:37:54,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1051.6ms TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:37:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 19:37:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 216. [2021-10-13 19:37:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 2.5235849056603774) internal successors, (535), 215 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 535 transitions. [2021-10-13 19:37:54,078 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 535 transitions. Word has length 14 [2021-10-13 19:37:54,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:54,079 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 535 transitions. [2021-10-13 19:37:54,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 535 transitions. [2021-10-13 19:37:54,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:54,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:54,079 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:54,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:54,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:54,281 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1012001651, now seen corresponding path program 18 times [2021-10-13 19:37:54,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:54,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146841335] [2021-10-13 19:37:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:54,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:37:55,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:55,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146841335] [2021-10-13 19:37:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146841335] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:55,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611463849] [2021-10-13 19:37:55,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:37:55,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:55,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:55,227 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:55,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 19:37:56,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:37:56,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:37:56,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:37:56,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:56,497 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:37:56,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-13 19:37:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:37:56,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611463849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:56,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-13 19:37:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506466379] [2021-10-13 19:37:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:37:56,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:37:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:37:56,638 INFO L87 Difference]: Start difference. First operand 216 states and 535 transitions. Second operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:58,052 INFO L93 Difference]: Finished difference Result 314 states and 751 transitions. [2021-10-13 19:37:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:37:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:58,055 INFO L225 Difference]: With dead ends: 314 [2021-10-13 19:37:58,055 INFO L226 Difference]: Without dead ends: 314 [2021-10-13 19:37:58,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1412.6ms TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:37:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-13 19:37:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 213. [2021-10-13 19:37:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 209 states have (on average 2.511961722488038) internal successors, (525), 212 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 525 transitions. [2021-10-13 19:37:58,062 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 525 transitions. Word has length 14 [2021-10-13 19:37:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:58,062 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 525 transitions. [2021-10-13 19:37:58,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 525 transitions. [2021-10-13 19:37:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:37:58,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:58,063 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:58,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 19:37:58,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-13 19:37:58,278 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:58,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1374018037, now seen corresponding path program 7 times [2021-10-13 19:37:58,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:58,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018033353] [2021-10-13 19:37:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:58,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:37:58,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:37:58,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018033353] [2021-10-13 19:37:58,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018033353] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:58,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721851278] [2021-10-13 19:37:58,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:37:58,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:37:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:37:58,329 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:37:58,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 19:37:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:37:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:37:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:37:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:37:59,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721851278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:37:59,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:37:59,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-10-13 19:37:59,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367267641] [2021-10-13 19:37:59,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:37:59,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:37:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:37:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:37:59,377 INFO L87 Difference]: Start difference. First operand 213 states and 525 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:37:59,422 INFO L93 Difference]: Finished difference Result 306 states and 773 transitions. [2021-10-13 19:37:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:37:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:37:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:37:59,424 INFO L225 Difference]: With dead ends: 306 [2021-10-13 19:37:59,424 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 19:37:59,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:37:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 19:37:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 222. [2021-10-13 19:37:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 2.772727272727273) internal successors, (610), 221 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 610 transitions. [2021-10-13 19:37:59,429 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 610 transitions. Word has length 14 [2021-10-13 19:37:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:37:59,429 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 610 transitions. [2021-10-13 19:37:59,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:37:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 610 transitions. [2021-10-13 19:37:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:37:59,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:37:59,430 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:37:59,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-13 19:37:59,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-13 19:37:59,631 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:37:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:37:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash -177347817, now seen corresponding path program 8 times [2021-10-13 19:37:59,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:37:59,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812616647] [2021-10-13 19:37:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:37:59,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:37:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:00,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:00,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812616647] [2021-10-13 19:38:00,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812616647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:00,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494152815] [2021-10-13 19:38:00,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:38:00,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:00,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:00,164 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:00,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 19:38:01,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:38:01,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:01,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 19:38:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:38:01,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494152815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:01,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:01,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-13 19:38:01,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632688460] [2021-10-13 19:38:01,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:38:01,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:01,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:38:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:38:01,387 INFO L87 Difference]: Start difference. First operand 222 states and 610 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:02,198 INFO L93 Difference]: Finished difference Result 389 states and 979 transitions. [2021-10-13 19:38:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:38:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 19:38:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:02,202 INFO L225 Difference]: With dead ends: 389 [2021-10-13 19:38:02,202 INFO L226 Difference]: Without dead ends: 381 [2021-10-13 19:38:02,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 873.8ms TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:38:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-13 19:38:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 184. [2021-10-13 19:38:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 2.6868131868131866) internal successors, (489), 183 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 489 transitions. [2021-10-13 19:38:02,208 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 489 transitions. Word has length 15 [2021-10-13 19:38:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:02,208 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 489 transitions. [2021-10-13 19:38:02,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 489 transitions. [2021-10-13 19:38:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:38:02,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:02,209 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:02,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 19:38:02,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-13 19:38:02,420 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash 733744333, now seen corresponding path program 9 times [2021-10-13 19:38:02,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:02,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332842700] [2021-10-13 19:38:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:02,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:03,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:03,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332842700] [2021-10-13 19:38:03,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332842700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:03,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109778686] [2021-10-13 19:38:03,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:38:03,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:03,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:03,733 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:03,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 19:38:04,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:38:04,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:04,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 19:38:04,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:04,902 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:38:04,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-13 19:38:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:38:04,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109778686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:04,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:04,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2021-10-13 19:38:04,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934460695] [2021-10-13 19:38:04,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:38:04,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:38:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:38:04,982 INFO L87 Difference]: Start difference. First operand 184 states and 489 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:06,566 INFO L93 Difference]: Finished difference Result 304 states and 751 transitions. [2021-10-13 19:38:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:38:06,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 19:38:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:06,568 INFO L225 Difference]: With dead ends: 304 [2021-10-13 19:38:06,569 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 19:38:06,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1714.6ms TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:38:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 19:38:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 146. [2021-10-13 19:38:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 2.638888888888889) internal successors, (380), 145 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 380 transitions. [2021-10-13 19:38:06,573 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 380 transitions. Word has length 15 [2021-10-13 19:38:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:06,573 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 380 transitions. [2021-10-13 19:38:06,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 380 transitions. [2021-10-13 19:38:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:38:06,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:06,574 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:06,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 19:38:06,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:06,791 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:06,792 INFO L82 PathProgramCache]: Analyzing trace with hash -212663000, now seen corresponding path program 19 times [2021-10-13 19:38:06,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:06,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843327985] [2021-10-13 19:38:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:06,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:07,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:07,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843327985] [2021-10-13 19:38:07,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843327985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:07,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259832570] [2021-10-13 19:38:07,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:38:07,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:07,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:07,793 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:07,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 19:38:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:08,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:38:08,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:38:09,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259832570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:09,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:09,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-13 19:38:09,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883595394] [2021-10-13 19:38:09,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:38:09,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:38:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:38:09,258 INFO L87 Difference]: Start difference. First operand 146 states and 380 transitions. Second operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:10,862 INFO L93 Difference]: Finished difference Result 260 states and 636 transitions. [2021-10-13 19:38:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:38:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 19:38:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:10,865 INFO L225 Difference]: With dead ends: 260 [2021-10-13 19:38:10,865 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 19:38:10,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1693.0ms TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:38:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 19:38:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 134. [2021-10-13 19:38:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 2.7045454545454546) internal successors, (357), 133 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 357 transitions. [2021-10-13 19:38:10,869 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 357 transitions. Word has length 15 [2021-10-13 19:38:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:10,869 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 357 transitions. [2021-10-13 19:38:10,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 357 transitions. [2021-10-13 19:38:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:10,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:10,871 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:10,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:11,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-13 19:38:11,072 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -451338570, now seen corresponding path program 9 times [2021-10-13 19:38:11,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:11,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141005708] [2021-10-13 19:38:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:11,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:11,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:11,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141005708] [2021-10-13 19:38:11,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141005708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:11,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524066063] [2021-10-13 19:38:11,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:38:11,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:11,293 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:11,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 19:38:12,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:38:12,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:12,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:38:12,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:38:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524066063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:12,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2021-10-13 19:38:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050543405] [2021-10-13 19:38:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:38:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:38:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:38:12,418 INFO L87 Difference]: Start difference. First operand 134 states and 357 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:13,180 INFO L93 Difference]: Finished difference Result 415 states and 915 transitions. [2021-10-13 19:38:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:38:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:13,183 INFO L225 Difference]: With dead ends: 415 [2021-10-13 19:38:13,183 INFO L226 Difference]: Without dead ends: 415 [2021-10-13 19:38:13,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 441.1ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:38:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-13 19:38:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 211. [2021-10-13 19:38:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 209 states have (on average 2.7559808612440193) internal successors, (576), 210 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 576 transitions. [2021-10-13 19:38:13,190 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 576 transitions. Word has length 16 [2021-10-13 19:38:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:13,190 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 576 transitions. [2021-10-13 19:38:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 576 transitions. [2021-10-13 19:38:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:13,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:13,191 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:13,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:13,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:13,401 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -451338617, now seen corresponding path program 9 times [2021-10-13 19:38:13,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:13,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522929944] [2021-10-13 19:38:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:13,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522929944] [2021-10-13 19:38:13,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522929944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446801125] [2021-10-13 19:38:13,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:38:13,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:13,624 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:13,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 19:38:14,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:38:14,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:14,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:38:14,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:38:14,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446801125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:14,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:14,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2021-10-13 19:38:14,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864180470] [2021-10-13 19:38:14,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:38:14,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:38:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:38:14,903 INFO L87 Difference]: Start difference. First operand 211 states and 576 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:15,601 INFO L93 Difference]: Finished difference Result 415 states and 899 transitions. [2021-10-13 19:38:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:38:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:15,604 INFO L225 Difference]: With dead ends: 415 [2021-10-13 19:38:15,604 INFO L226 Difference]: Without dead ends: 365 [2021-10-13 19:38:15,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 430.3ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:38:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-10-13 19:38:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 190. [2021-10-13 19:38:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 188 states have (on average 2.7074468085106385) internal successors, (509), 189 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 509 transitions. [2021-10-13 19:38:15,612 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 509 transitions. Word has length 16 [2021-10-13 19:38:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:15,612 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 509 transitions. [2021-10-13 19:38:15,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 509 transitions. [2021-10-13 19:38:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:15,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:15,614 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:15,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:15,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:15,829 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash 149873601, now seen corresponding path program 10 times [2021-10-13 19:38:15,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:15,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156286813] [2021-10-13 19:38:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:15,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:16,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:16,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156286813] [2021-10-13 19:38:16,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156286813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:16,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789717490] [2021-10-13 19:38:16,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:38:16,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:16,567 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:16,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 19:38:18,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:38:18,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:18,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 19:38:18,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:18,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 181 [2021-10-13 19:38:18,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:38:18,672 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:38:18,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:38:18,884 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:38:18,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:38:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:19,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789717490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:19,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:19,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-10-13 19:38:19,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66939370] [2021-10-13 19:38:19,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:38:19,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:38:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:38:19,415 INFO L87 Difference]: Start difference. First operand 190 states and 509 transitions. Second operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:21,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:21,111 INFO L93 Difference]: Finished difference Result 472 states and 1261 transitions. [2021-10-13 19:38:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:38:21,111 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:21,115 INFO L225 Difference]: With dead ends: 472 [2021-10-13 19:38:21,115 INFO L226 Difference]: Without dead ends: 472 [2021-10-13 19:38:21,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1581.6ms TimeCoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:38:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-13 19:38:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 308. [2021-10-13 19:38:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 305 states have (on average 3.0131147540983605) internal successors, (919), 307 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 919 transitions. [2021-10-13 19:38:21,125 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 919 transitions. Word has length 16 [2021-10-13 19:38:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:21,125 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 919 transitions. [2021-10-13 19:38:21,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 919 transitions. [2021-10-13 19:38:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:21,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:21,127 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:21,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:21,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-10-13 19:38:21,340 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:21,341 INFO L82 PathProgramCache]: Analyzing trace with hash 149873554, now seen corresponding path program 20 times [2021-10-13 19:38:21,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:21,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709907800] [2021-10-13 19:38:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:21,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:21,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:21,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709907800] [2021-10-13 19:38:21,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709907800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:21,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777815269] [2021-10-13 19:38:21,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:38:21,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:21,867 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:21,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 19:38:22,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:38:22,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:38:22,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:23,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:38:23,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:23,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:23,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777815269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:23,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:23,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:38:23,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212384861] [2021-10-13 19:38:23,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:38:23,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:38:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:38:23,864 INFO L87 Difference]: Start difference. First operand 308 states and 919 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:25,338 INFO L93 Difference]: Finished difference Result 414 states and 1112 transitions. [2021-10-13 19:38:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:38:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:25,343 INFO L225 Difference]: With dead ends: 414 [2021-10-13 19:38:25,343 INFO L226 Difference]: Without dead ends: 395 [2021-10-13 19:38:25,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1370.3ms TimeCoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:38:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-13 19:38:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 315. [2021-10-13 19:38:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 311 states have (on average 2.90032154340836) internal successors, (902), 314 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 902 transitions. [2021-10-13 19:38:25,352 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 902 transitions. Word has length 16 [2021-10-13 19:38:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:25,353 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 902 transitions. [2021-10-13 19:38:25,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 902 transitions. [2021-10-13 19:38:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:25,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:25,354 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:25,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-13 19:38:25,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:25,568 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash -64354964, now seen corresponding path program 10 times [2021-10-13 19:38:25,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:25,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004595582] [2021-10-13 19:38:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:25,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:25,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:25,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004595582] [2021-10-13 19:38:25,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004595582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:25,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564705122] [2021-10-13 19:38:25,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:38:25,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:25,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:25,829 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:25,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 19:38:26,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:38:27,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:38:27,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:27,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 134 [2021-10-13 19:38:27,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:38:27,641 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:38:27,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:38:27,774 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:38:27,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-13 19:38:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:28,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564705122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:28,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:28,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-13 19:38:28,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874621413] [2021-10-13 19:38:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:38:28,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:38:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:38:28,652 INFO L87 Difference]: Start difference. First operand 315 states and 902 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:30,184 INFO L93 Difference]: Finished difference Result 361 states and 794 transitions. [2021-10-13 19:38:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:38:30,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:30,187 INFO L225 Difference]: With dead ends: 361 [2021-10-13 19:38:30,188 INFO L226 Difference]: Without dead ends: 357 [2021-10-13 19:38:30,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1775.2ms TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:38:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-13 19:38:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 236. [2021-10-13 19:38:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 2.4870689655172415) internal successors, (577), 235 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 577 transitions. [2021-10-13 19:38:30,196 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 577 transitions. Word has length 16 [2021-10-13 19:38:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:30,196 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 577 transitions. [2021-10-13 19:38:30,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 577 transitions. [2021-10-13 19:38:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:30,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:30,198 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:30,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-13 19:38:30,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:30,413 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:30,414 INFO L82 PathProgramCache]: Analyzing trace with hash -64355011, now seen corresponding path program 10 times [2021-10-13 19:38:30,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:30,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211295761] [2021-10-13 19:38:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:30,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:30,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:30,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211295761] [2021-10-13 19:38:30,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211295761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:30,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091770871] [2021-10-13 19:38:30,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:38:30,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:30,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:30,670 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:30,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 19:38:31,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:38:31,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:31,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:38:31,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:31,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:38:32,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:38:32,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:32,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:32,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091770871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:32,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:32,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-13 19:38:32,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129047423] [2021-10-13 19:38:32,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:38:32,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:38:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:38:32,483 INFO L87 Difference]: Start difference. First operand 236 states and 577 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:33,846 INFO L93 Difference]: Finished difference Result 392 states and 836 transitions. [2021-10-13 19:38:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:38:33,846 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:33,849 INFO L225 Difference]: With dead ends: 392 [2021-10-13 19:38:33,849 INFO L226 Difference]: Without dead ends: 386 [2021-10-13 19:38:33,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1387.1ms TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:38:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-13 19:38:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 256. [2021-10-13 19:38:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 2.5) internal successors, (630), 255 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 630 transitions. [2021-10-13 19:38:33,857 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 630 transitions. Word has length 16 [2021-10-13 19:38:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:33,858 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 630 transitions. [2021-10-13 19:38:33,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 630 transitions. [2021-10-13 19:38:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:33,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:33,859 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:33,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:34,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:34,072 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash -64354360, now seen corresponding path program 21 times [2021-10-13 19:38:34,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:34,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475318116] [2021-10-13 19:38:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:34,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:34,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:34,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475318116] [2021-10-13 19:38:34,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475318116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:34,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017660003] [2021-10-13 19:38:34,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:38:34,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:34,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:34,827 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:34,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 19:38:35,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:38:35,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:35,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-13 19:38:35,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:36,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:36,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:38:36,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:36,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:36,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017660003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:36,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:36,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-13 19:38:36,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926707796] [2021-10-13 19:38:36,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:38:36,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:38:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:38:36,985 INFO L87 Difference]: Start difference. First operand 256 states and 630 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:39,647 INFO L93 Difference]: Finished difference Result 331 states and 763 transitions. [2021-10-13 19:38:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:38:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:39,650 INFO L225 Difference]: With dead ends: 331 [2021-10-13 19:38:39,650 INFO L226 Difference]: Without dead ends: 327 [2021-10-13 19:38:39,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2620.2ms TimeCoverageRelationStatistics Valid=286, Invalid=1876, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:38:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-13 19:38:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 254. [2021-10-13 19:38:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 2.5) internal successors, (625), 253 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 625 transitions. [2021-10-13 19:38:39,656 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 625 transitions. Word has length 16 [2021-10-13 19:38:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:39,656 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 625 transitions. [2021-10-13 19:38:39,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 625 transitions. [2021-10-13 19:38:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:39,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:39,657 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:39,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-13 19:38:39,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:39,858 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash -64344130, now seen corresponding path program 22 times [2021-10-13 19:38:39,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:39,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762867894] [2021-10-13 19:38:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:39,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:40,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:40,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762867894] [2021-10-13 19:38:40,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762867894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:40,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366331508] [2021-10-13 19:38:40,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:38:40,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:40,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:40,453 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:40,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 19:38:41,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:38:41,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:41,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:38:41,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:41,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 142 [2021-10-13 19:38:41,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:38:41,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:41,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:42,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366331508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:42,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:42,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2021-10-13 19:38:42,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518191021] [2021-10-13 19:38:42,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:38:42,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:38:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:38:42,518 INFO L87 Difference]: Start difference. First operand 254 states and 625 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:44,055 INFO L93 Difference]: Finished difference Result 369 states and 833 transitions. [2021-10-13 19:38:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:38:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:44,058 INFO L225 Difference]: With dead ends: 369 [2021-10-13 19:38:44,059 INFO L226 Difference]: Without dead ends: 363 [2021-10-13 19:38:44,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1600.3ms TimeCoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:38:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-10-13 19:38:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 248. [2021-10-13 19:38:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 2.5163934426229506) internal successors, (614), 247 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 614 transitions. [2021-10-13 19:38:44,067 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 614 transitions. Word has length 16 [2021-10-13 19:38:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:44,067 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 614 transitions. [2021-10-13 19:38:44,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 614 transitions. [2021-10-13 19:38:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:44,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:44,069 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:44,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:44,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-13 19:38:44,286 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:44,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash -64026953, now seen corresponding path program 11 times [2021-10-13 19:38:44,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:44,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800548704] [2021-10-13 19:38:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:44,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:44,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800548704] [2021-10-13 19:38:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800548704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234684374] [2021-10-13 19:38:44,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:38:44,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:44,597 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:44,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 19:38:45,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:38:45,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:45,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:38:45,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:45,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:38:46,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:38:46,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:46,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:46,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234684374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:46,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:46,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-13 19:38:46,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335113467] [2021-10-13 19:38:46,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:38:46,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:38:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:38:46,404 INFO L87 Difference]: Start difference. First operand 248 states and 614 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:47,706 INFO L93 Difference]: Finished difference Result 335 states and 751 transitions. [2021-10-13 19:38:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:38:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:47,708 INFO L225 Difference]: With dead ends: 335 [2021-10-13 19:38:47,709 INFO L226 Difference]: Without dead ends: 335 [2021-10-13 19:38:47,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1260.6ms TimeCoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:38:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-10-13 19:38:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 257. [2021-10-13 19:38:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 2.486166007905138) internal successors, (629), 256 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 629 transitions. [2021-10-13 19:38:47,716 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 629 transitions. Word has length 16 [2021-10-13 19:38:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:47,716 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 629 transitions. [2021-10-13 19:38:47,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 629 transitions. [2021-10-13 19:38:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:47,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:47,718 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:47,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:47,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-13 19:38:47,934 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -64027000, now seen corresponding path program 23 times [2021-10-13 19:38:47,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:47,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563440426] [2021-10-13 19:38:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:47,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:48,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:48,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563440426] [2021-10-13 19:38:48,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563440426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:48,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219189668] [2021-10-13 19:38:48,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:38:48,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:48,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:48,505 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:48,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 19:38:49,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:38:49,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:49,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-13 19:38:49,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:49,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:38:49,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:38:50,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:50,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:50,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219189668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:50,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:50,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:38:50,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636417404] [2021-10-13 19:38:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:38:50,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:38:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:38:50,612 INFO L87 Difference]: Start difference. First operand 257 states and 629 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:51,979 INFO L93 Difference]: Finished difference Result 345 states and 789 transitions. [2021-10-13 19:38:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:38:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:51,984 INFO L225 Difference]: With dead ends: 345 [2021-10-13 19:38:51,984 INFO L226 Difference]: Without dead ends: 345 [2021-10-13 19:38:51,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1494.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:38:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-10-13 19:38:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 259. [2021-10-13 19:38:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 255 states have (on average 2.4784313725490197) internal successors, (632), 258 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 632 transitions. [2021-10-13 19:38:51,991 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 632 transitions. Word has length 16 [2021-10-13 19:38:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:51,991 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 632 transitions. [2021-10-13 19:38:51,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 632 transitions. [2021-10-13 19:38:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:51,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:51,993 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:52,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:52,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:52,206 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:52,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:52,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1884832028, now seen corresponding path program 24 times [2021-10-13 19:38:52,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:52,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177450259] [2021-10-13 19:38:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:52,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:52,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:52,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177450259] [2021-10-13 19:38:52,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177450259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:52,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634454440] [2021-10-13 19:38:52,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:38:52,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:52,826 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:52,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 19:38:54,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:38:54,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:38:54,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 19:38:54,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:54,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:38:54,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:54,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:38:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:54,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634454440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:54,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:54,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-13 19:38:54,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815221219] [2021-10-13 19:38:54,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:38:54,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:38:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:38:54,880 INFO L87 Difference]: Start difference. First operand 259 states and 632 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:38:56,848 INFO L93 Difference]: Finished difference Result 351 states and 793 transitions. [2021-10-13 19:38:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:38:56,849 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:38:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:38:56,851 INFO L225 Difference]: With dead ends: 351 [2021-10-13 19:38:56,851 INFO L226 Difference]: Without dead ends: 343 [2021-10-13 19:38:56,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1999.8ms TimeCoverageRelationStatistics Valid=293, Invalid=1777, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:38:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-10-13 19:38:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 269. [2021-10-13 19:38:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 2.449056603773585) internal successors, (649), 268 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 649 transitions. [2021-10-13 19:38:56,856 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 649 transitions. Word has length 16 [2021-10-13 19:38:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:38:56,856 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 649 transitions. [2021-10-13 19:38:56,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:38:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 649 transitions. [2021-10-13 19:38:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:38:56,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:38:56,857 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:38:56,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-13 19:38:57,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:57,058 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:38:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:38:57,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1884842258, now seen corresponding path program 25 times [2021-10-13 19:38:57,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:38:57,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587277722] [2021-10-13 19:38:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:38:57,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:38:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:57,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:38:57,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587277722] [2021-10-13 19:38:57,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587277722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:57,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071626973] [2021-10-13 19:38:57,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:38:57,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:38:57,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:38:57,613 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:38:57,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-13 19:38:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:38:58,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:38:58,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:38:58,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 137 [2021-10-13 19:38:59,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:59,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:59,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:38:59,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:59,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:38:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:38:59,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071626973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:38:59,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:38:59,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2021-10-13 19:38:59,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803655623] [2021-10-13 19:38:59,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:38:59,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:38:59,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:38:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:38:59,929 INFO L87 Difference]: Start difference. First operand 269 states and 649 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:01,924 INFO L93 Difference]: Finished difference Result 371 states and 836 transitions. [2021-10-13 19:39:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:39:01,925 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:01,929 INFO L225 Difference]: With dead ends: 371 [2021-10-13 19:39:01,929 INFO L226 Difference]: Without dead ends: 363 [2021-10-13 19:39:01,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2031.3ms TimeCoverageRelationStatistics Valid=215, Invalid=1765, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:39:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-10-13 19:39:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 261. [2021-10-13 19:39:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 2.470817120622568) internal successors, (635), 260 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 635 transitions. [2021-10-13 19:39:01,937 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 635 transitions. Word has length 16 [2021-10-13 19:39:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:01,937 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 635 transitions. [2021-10-13 19:39:01,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 635 transitions. [2021-10-13 19:39:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:01,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:01,938 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:01,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-13 19:39:02,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:02,151 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1894663105, now seen corresponding path program 12 times [2021-10-13 19:39:02,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:02,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773343256] [2021-10-13 19:39:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:02,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:02,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:02,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773343256] [2021-10-13 19:39:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773343256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:02,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576152230] [2021-10-13 19:39:02,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:39:02,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:02,861 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:02,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-13 19:39:04,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:39:04,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:04,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:39:04,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:04,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:04,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:04,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:39:04,460 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:39:04,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:39:04,572 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:39:04,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-13 19:39:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:05,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576152230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:05,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:05,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:39:05,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599912139] [2021-10-13 19:39:05,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:39:05,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:39:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:39:05,578 INFO L87 Difference]: Start difference. First operand 261 states and 635 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:11,995 INFO L93 Difference]: Finished difference Result 361 states and 809 transitions. [2021-10-13 19:39:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:39:11,996 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:11,998 INFO L225 Difference]: With dead ends: 361 [2021-10-13 19:39:11,998 INFO L226 Difference]: Without dead ends: 361 [2021-10-13 19:39:11,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 6124.7ms TimeCoverageRelationStatistics Valid=512, Invalid=2350, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:39:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-10-13 19:39:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 269. [2021-10-13 19:39:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 2.456603773584906) internal successors, (651), 268 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 651 transitions. [2021-10-13 19:39:12,006 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 651 transitions. Word has length 16 [2021-10-13 19:39:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:12,006 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 651 transitions. [2021-10-13 19:39:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 651 transitions. [2021-10-13 19:39:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:12,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:12,007 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:12,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:12,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:12,208 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:12,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1894663058, now seen corresponding path program 26 times [2021-10-13 19:39:12,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:12,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419148421] [2021-10-13 19:39:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:12,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:12,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:12,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419148421] [2021-10-13 19:39:12,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419148421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:12,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073663466] [2021-10-13 19:39:12,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:39:12,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:12,780 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:12,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-13 19:39:14,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:39:14,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:14,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:39:14,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:14,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:39:14,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:14,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:15,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073663466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:15,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:15,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-13 19:39:15,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427683017] [2021-10-13 19:39:15,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:39:15,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:39:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:39:15,044 INFO L87 Difference]: Start difference. First operand 269 states and 651 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:16,739 INFO L93 Difference]: Finished difference Result 330 states and 760 transitions. [2021-10-13 19:39:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:39:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:16,743 INFO L225 Difference]: With dead ends: 330 [2021-10-13 19:39:16,743 INFO L226 Difference]: Without dead ends: 326 [2021-10-13 19:39:16,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1774.5ms TimeCoverageRelationStatistics Valid=226, Invalid=1496, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:39:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-13 19:39:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 273. [2021-10-13 19:39:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 2.449814126394052) internal successors, (659), 272 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 659 transitions. [2021-10-13 19:39:16,749 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 659 transitions. Word has length 16 [2021-10-13 19:39:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 659 transitions. [2021-10-13 19:39:16,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 659 transitions. [2021-10-13 19:39:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:16,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:16,750 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:16,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:16,952 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1894673335, now seen corresponding path program 13 times [2021-10-13 19:39:16,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:16,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582413884] [2021-10-13 19:39:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:16,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:17,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:17,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582413884] [2021-10-13 19:39:17,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582413884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:17,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545225005] [2021-10-13 19:39:17,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:39:17,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:17,896 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:17,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-13 19:39:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:19,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:39:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:19,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:39:19,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:19,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:19,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:39:19,661 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:39:19,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:39:19,869 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:39:19,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:39:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:20,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545225005] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:20,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:20,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:39:20,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040117630] [2021-10-13 19:39:20,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:39:20,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:39:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:39:20,605 INFO L87 Difference]: Start difference. First operand 273 states and 659 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:22,877 INFO L93 Difference]: Finished difference Result 336 states and 767 transitions. [2021-10-13 19:39:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:39:22,878 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:22,880 INFO L225 Difference]: With dead ends: 336 [2021-10-13 19:39:22,880 INFO L226 Difference]: Without dead ends: 336 [2021-10-13 19:39:22,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2418.7ms TimeCoverageRelationStatistics Valid=200, Invalid=1606, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:39:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-13 19:39:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 275. [2021-10-13 19:39:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 2.4428044280442807) internal successors, (662), 274 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 662 transitions. [2021-10-13 19:39:22,888 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 662 transitions. Word has length 16 [2021-10-13 19:39:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:22,888 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 662 transitions. [2021-10-13 19:39:22,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 662 transitions. [2021-10-13 19:39:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:22,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:22,889 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:22,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-13 19:39:23,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:23,104 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:23,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1894673288, now seen corresponding path program 27 times [2021-10-13 19:39:23,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:23,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988324507] [2021-10-13 19:39:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:23,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:23,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:23,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988324507] [2021-10-13 19:39:23,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988324507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:23,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489617568] [2021-10-13 19:39:23,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:39:23,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:23,729 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:23,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-13 19:39:25,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:39:25,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:25,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:39:25,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:39:25,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489617568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:25,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:25,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 18 [2021-10-13 19:39:25,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187922108] [2021-10-13 19:39:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:39:25,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:39:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:39:25,538 INFO L87 Difference]: Start difference. First operand 275 states and 662 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:26,687 INFO L93 Difference]: Finished difference Result 381 states and 908 transitions. [2021-10-13 19:39:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:39:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:26,690 INFO L225 Difference]: With dead ends: 381 [2021-10-13 19:39:26,690 INFO L226 Difference]: Without dead ends: 375 [2021-10-13 19:39:26,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1085.1ms TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:39:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-13 19:39:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 306. [2021-10-13 19:39:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 2.493377483443709) internal successors, (753), 305 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 753 transitions. [2021-10-13 19:39:26,697 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 753 transitions. Word has length 16 [2021-10-13 19:39:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:26,697 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 753 transitions. [2021-10-13 19:39:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 753 transitions. [2021-10-13 19:39:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:26,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:26,699 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:26,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-10-13 19:39:26,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:26,900 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1894990418, now seen corresponding path program 28 times [2021-10-13 19:39:26,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:26,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758089941] [2021-10-13 19:39:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:26,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:27,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:27,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758089941] [2021-10-13 19:39:27,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758089941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:27,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395179115] [2021-10-13 19:39:27,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:39:27,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:27,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:27,468 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:27,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-13 19:39:28,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:39:28,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:28,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:39:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:28,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:39:29,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:39:29,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:29,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:29,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395179115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:29,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:29,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:39:29,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125991618] [2021-10-13 19:39:29,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:39:29,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:39:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:39:29,853 INFO L87 Difference]: Start difference. First operand 306 states and 753 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:30,564 INFO L93 Difference]: Finished difference Result 355 states and 840 transitions. [2021-10-13 19:39:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:39:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:30,568 INFO L225 Difference]: With dead ends: 355 [2021-10-13 19:39:30,568 INFO L226 Difference]: Without dead ends: 355 [2021-10-13 19:39:30,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1044.5ms TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:39:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-10-13 19:39:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 304. [2021-10-13 19:39:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 300 states have (on average 2.5) internal successors, (750), 303 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 750 transitions. [2021-10-13 19:39:30,576 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 750 transitions. Word has length 16 [2021-10-13 19:39:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:30,576 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 750 transitions. [2021-10-13 19:39:30,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 750 transitions. [2021-10-13 19:39:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:30,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:30,577 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:30,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:30,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-13 19:39:30,792 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:30,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1810137454, now seen corresponding path program 29 times [2021-10-13 19:39:30,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:30,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090142084] [2021-10-13 19:39:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:30,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:31,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:31,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090142084] [2021-10-13 19:39:31,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090142084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:31,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126761402] [2021-10-13 19:39:31,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:39:31,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:31,283 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:31,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-13 19:39:32,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:39:32,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:39:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:33,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126761402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:33,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:33,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:39:33,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760187704] [2021-10-13 19:39:33,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:39:33,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:39:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:39:33,375 INFO L87 Difference]: Start difference. First operand 304 states and 750 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:35,294 INFO L93 Difference]: Finished difference Result 333 states and 777 transitions. [2021-10-13 19:39:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:39:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:35,297 INFO L225 Difference]: With dead ends: 333 [2021-10-13 19:39:35,297 INFO L226 Difference]: Without dead ends: 325 [2021-10-13 19:39:35,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1994.9ms TimeCoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:39:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-13 19:39:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 296. [2021-10-13 19:39:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 2.4452054794520546) internal successors, (714), 295 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 714 transitions. [2021-10-13 19:39:35,304 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 714 transitions. Word has length 16 [2021-10-13 19:39:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:35,305 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 714 transitions. [2021-10-13 19:39:35,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 714 transitions. [2021-10-13 19:39:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:35,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:35,330 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:35,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:35,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:35,531 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:35,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1810127224, now seen corresponding path program 30 times [2021-10-13 19:39:35,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:35,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484388825] [2021-10-13 19:39:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:35,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:36,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:36,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484388825] [2021-10-13 19:39:36,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484388825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:36,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142540020] [2021-10-13 19:39:36,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:39:36,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:36,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:36,008 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 19:39:37,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:39:37,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:37,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:39:37,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:37,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:39:37,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:37,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:38,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142540020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:38,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:38,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-13 19:39:38,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340503771] [2021-10-13 19:39:38,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:39:38,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:39:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:39:38,383 INFO L87 Difference]: Start difference. First operand 296 states and 714 transitions. Second operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:39,247 INFO L93 Difference]: Finished difference Result 324 states and 762 transitions. [2021-10-13 19:39:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:39:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:39,249 INFO L225 Difference]: With dead ends: 324 [2021-10-13 19:39:39,249 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 19:39:39,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1110.7ms TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:39:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 19:39:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2021-10-13 19:39:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 286 states have (on average 2.458041958041958) internal successors, (703), 289 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 703 transitions. [2021-10-13 19:39:39,257 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 703 transitions. Word has length 16 [2021-10-13 19:39:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:39,257 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 703 transitions. [2021-10-13 19:39:39,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 703 transitions. [2021-10-13 19:39:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:39,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:39,258 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:39,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:39,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-13 19:39:39,472 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1800306377, now seen corresponding path program 14 times [2021-10-13 19:39:39,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:39,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244867223] [2021-10-13 19:39:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:39,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:40,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:40,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244867223] [2021-10-13 19:39:40,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244867223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:40,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454361104] [2021-10-13 19:39:40,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:39:40,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:40,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:40,079 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:40,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-13 19:39:41,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:39:41,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:41,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 19:39:41,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:41,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:39:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:41,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:42,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454361104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:42,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:42,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-13 19:39:42,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780949868] [2021-10-13 19:39:42,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:39:42,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:39:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:39:42,225 INFO L87 Difference]: Start difference. First operand 290 states and 703 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:43,688 INFO L93 Difference]: Finished difference Result 380 states and 855 transitions. [2021-10-13 19:39:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:39:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:43,690 INFO L225 Difference]: With dead ends: 380 [2021-10-13 19:39:43,690 INFO L226 Difference]: Without dead ends: 376 [2021-10-13 19:39:43,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1440.0ms TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:39:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-13 19:39:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 282. [2021-10-13 19:39:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 2.464028776978417) internal successors, (685), 281 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 685 transitions. [2021-10-13 19:39:43,698 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 685 transitions. Word has length 16 [2021-10-13 19:39:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 685 transitions. [2021-10-13 19:39:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 685 transitions. [2021-10-13 19:39:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:43,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:43,699 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:43,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-13 19:39:43,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-13 19:39:43,900 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:43,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:43,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1800306424, now seen corresponding path program 31 times [2021-10-13 19:39:43,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:43,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457739651] [2021-10-13 19:39:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:43,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:44,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:44,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457739651] [2021-10-13 19:39:44,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457739651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:44,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230114789] [2021-10-13 19:39:44,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:39:44,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:44,377 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:44,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 19:39:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:46,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:39:46,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:46,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:39:46,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:46,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:46,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:39:46,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:46,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:39:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:46,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230114789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:46,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:46,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2021-10-13 19:39:46,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002718368] [2021-10-13 19:39:46,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:39:46,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:39:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:39:46,968 INFO L87 Difference]: Start difference. First operand 282 states and 685 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:48,520 INFO L93 Difference]: Finished difference Result 307 states and 728 transitions. [2021-10-13 19:39:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:39:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:48,523 INFO L225 Difference]: With dead ends: 307 [2021-10-13 19:39:48,523 INFO L226 Difference]: Without dead ends: 303 [2021-10-13 19:39:48,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1740.8ms TimeCoverageRelationStatistics Valid=198, Invalid=1524, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:39:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-13 19:39:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2021-10-13 19:39:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 2.4574468085106385) internal successors, (693), 285 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 693 transitions. [2021-10-13 19:39:48,530 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 693 transitions. Word has length 16 [2021-10-13 19:39:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 693 transitions. [2021-10-13 19:39:48,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 693 transitions. [2021-10-13 19:39:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:48,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:48,532 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:48,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-13 19:39:48,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:48,746 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1800296147, now seen corresponding path program 15 times [2021-10-13 19:39:48,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:48,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422040524] [2021-10-13 19:39:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:48,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:49,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:49,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422040524] [2021-10-13 19:39:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422040524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:49,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430510786] [2021-10-13 19:39:49,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:39:49,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:49,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:49,638 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:49,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-13 19:39:51,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:39:51,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:51,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:39:51,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 19:39:51,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430510786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:51,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:51,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 17 [2021-10-13 19:39:51,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316993495] [2021-10-13 19:39:51,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:39:51,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:39:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:39:51,424 INFO L87 Difference]: Start difference. First operand 286 states and 693 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:53,030 INFO L93 Difference]: Finished difference Result 519 states and 1130 transitions. [2021-10-13 19:39:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:39:53,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:53,032 INFO L225 Difference]: With dead ends: 519 [2021-10-13 19:39:53,032 INFO L226 Difference]: Without dead ends: 507 [2021-10-13 19:39:53,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1428.7ms TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:39:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-13 19:39:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 252. [2021-10-13 19:39:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 2.431451612903226) internal successors, (603), 251 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 603 transitions. [2021-10-13 19:39:53,038 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 603 transitions. Word has length 16 [2021-10-13 19:39:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:53,038 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 603 transitions. [2021-10-13 19:39:53,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 603 transitions. [2021-10-13 19:39:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:53,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:53,039 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:53,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-13 19:39:53,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:53,240 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:53,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1800296194, now seen corresponding path program 32 times [2021-10-13 19:39:53,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:53,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757813563] [2021-10-13 19:39:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:53,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:53,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:53,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757813563] [2021-10-13 19:39:53,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757813563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:53,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501937965] [2021-10-13 19:39:53,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:39:53,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:53,706 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:53,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-13 19:39:55,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:39:55,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:55,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:39:55,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:55,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:39:55,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:55,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 19:39:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:56,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501937965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:56,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-13 19:39:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060779605] [2021-10-13 19:39:56,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:39:56,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:39:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:39:56,049 INFO L87 Difference]: Start difference. First operand 252 states and 603 transitions. Second operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:39:56,841 INFO L93 Difference]: Finished difference Result 268 states and 627 transitions. [2021-10-13 19:39:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:39:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:39:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:39:56,843 INFO L225 Difference]: With dead ends: 268 [2021-10-13 19:39:56,843 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 19:39:56,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1034.9ms TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:39:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 19:39:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 250. [2021-10-13 19:39:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 2.430894308943089) internal successors, (598), 249 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 598 transitions. [2021-10-13 19:39:56,850 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 598 transitions. Word has length 16 [2021-10-13 19:39:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:39:56,850 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 598 transitions. [2021-10-13 19:39:56,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:39:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 598 transitions. [2021-10-13 19:39:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:39:56,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:39:56,851 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:39:56,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-13 19:39:57,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:57,059 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:39:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:39:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1799979064, now seen corresponding path program 33 times [2021-10-13 19:39:57,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:39:57,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817339131] [2021-10-13 19:39:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:39:57,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:39:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:39:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:39:57,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:39:57,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817339131] [2021-10-13 19:39:57,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817339131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:57,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525622261] [2021-10-13 19:39:57,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:39:57,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:39:57,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:39:57,515 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:39:57,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-13 19:39:59,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:39:59,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:39:59,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:39:59,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:39:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:39:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525622261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:39:59,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:39:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 18 [2021-10-13 19:39:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372689330] [2021-10-13 19:39:59,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:39:59,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:39:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:39:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:39:59,528 INFO L87 Difference]: Start difference. First operand 250 states and 598 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:00,703 INFO L93 Difference]: Finished difference Result 297 states and 701 transitions. [2021-10-13 19:40:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:40:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:00,705 INFO L225 Difference]: With dead ends: 297 [2021-10-13 19:40:00,705 INFO L226 Difference]: Without dead ends: 297 [2021-10-13 19:40:00,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 961.2ms TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:40:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-13 19:40:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 279. [2021-10-13 19:40:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 275 states have (on average 2.4545454545454546) internal successors, (675), 278 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 675 transitions. [2021-10-13 19:40:00,712 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 675 transitions. Word has length 16 [2021-10-13 19:40:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:00,712 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 675 transitions. [2021-10-13 19:40:00,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 675 transitions. [2021-10-13 19:40:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:00,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:00,713 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:00,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:00,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:00,914 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2135945670, now seen corresponding path program 34 times [2021-10-13 19:40:00,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:00,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791857856] [2021-10-13 19:40:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:00,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:01,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:01,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791857856] [2021-10-13 19:40:01,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791857856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:01,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522061244] [2021-10-13 19:40:01,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:40:01,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:01,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:01,576 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:01,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-13 19:40:03,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:40:03,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:03,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:40:03,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:03,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:40:03,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:03,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:03,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:03,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:03,713 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:03,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:04,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522061244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:04,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:04,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:40:04,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393238450] [2021-10-13 19:40:04,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:04,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:04,246 INFO L87 Difference]: Start difference. First operand 279 states and 675 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:06,441 INFO L93 Difference]: Finished difference Result 357 states and 804 transitions. [2021-10-13 19:40:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:40:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:06,443 INFO L225 Difference]: With dead ends: 357 [2021-10-13 19:40:06,443 INFO L226 Difference]: Without dead ends: 357 [2021-10-13 19:40:06,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1977.1ms TimeCoverageRelationStatistics Valid=216, Invalid=1676, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:40:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-13 19:40:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 285. [2021-10-13 19:40:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 2.4412811387900355) internal successors, (686), 284 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 686 transitions. [2021-10-13 19:40:06,457 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 686 transitions. Word has length 16 [2021-10-13 19:40:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:06,457 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 686 transitions. [2021-10-13 19:40:06,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 686 transitions. [2021-10-13 19:40:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:06,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:06,459 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:06,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:06,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-10-13 19:40:06,659 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:06,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1944793712, now seen corresponding path program 35 times [2021-10-13 19:40:06,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:06,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627792575] [2021-10-13 19:40:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:06,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:07,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:07,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627792575] [2021-10-13 19:40:07,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627792575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:07,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002589045] [2021-10-13 19:40:07,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:40:07,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:07,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:07,386 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:07,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-13 19:40:09,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:40:09,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:09,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 19:40:09,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:09,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:40:09,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:09,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:09,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:09,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:09,530 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:09,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 19:40:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:10,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002589045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:10,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:10,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:40:10,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533430469] [2021-10-13 19:40:10,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:40:10,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:40:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:40:10,266 INFO L87 Difference]: Start difference. First operand 285 states and 686 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:13,677 INFO L93 Difference]: Finished difference Result 395 states and 870 transitions. [2021-10-13 19:40:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:40:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:13,678 INFO L225 Difference]: With dead ends: 395 [2021-10-13 19:40:13,678 INFO L226 Difference]: Without dead ends: 391 [2021-10-13 19:40:13,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3336.4ms TimeCoverageRelationStatistics Valid=403, Invalid=2047, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:40:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-13 19:40:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 289. [2021-10-13 19:40:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 2.4350877192982456) internal successors, (694), 288 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2021-10-13 19:40:13,684 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 16 [2021-10-13 19:40:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:13,684 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2021-10-13 19:40:13,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2021-10-13 19:40:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:13,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:13,686 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:13,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:13,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-13 19:40:13,892 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:13,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1944803942, now seen corresponding path program 36 times [2021-10-13 19:40:13,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:13,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706445953] [2021-10-13 19:40:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:13,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:14,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:14,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706445953] [2021-10-13 19:40:14,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706445953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:14,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160453291] [2021-10-13 19:40:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:40:14,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:14,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:14,710 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:14,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 19:40:16,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:40:16,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:16,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:40:16,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:16,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 117 [2021-10-13 19:40:16,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:16,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:16,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:16,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:16,916 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:16,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:17,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160453291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:17,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:17,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:40:17,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574827999] [2021-10-13 19:40:17,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:17,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:17,432 INFO L87 Difference]: Start difference. First operand 289 states and 694 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:19,638 INFO L93 Difference]: Finished difference Result 385 states and 852 transitions. [2021-10-13 19:40:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:40:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:19,641 INFO L225 Difference]: With dead ends: 385 [2021-10-13 19:40:19,641 INFO L226 Difference]: Without dead ends: 379 [2021-10-13 19:40:19,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2354.3ms TimeCoverageRelationStatistics Valid=240, Invalid=1830, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:40:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-13 19:40:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 291. [2021-10-13 19:40:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 2.4285714285714284) internal successors, (697), 290 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 697 transitions. [2021-10-13 19:40:19,648 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 697 transitions. Word has length 16 [2021-10-13 19:40:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:19,648 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 697 transitions. [2021-10-13 19:40:19,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 697 transitions. [2021-10-13 19:40:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:19,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:19,648 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:19,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:19,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:19,849 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1945121072, now seen corresponding path program 37 times [2021-10-13 19:40:19,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:19,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649969228] [2021-10-13 19:40:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:19,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:20,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:20,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649969228] [2021-10-13 19:40:20,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649969228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:20,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006295076] [2021-10-13 19:40:20,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:40:20,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:20,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:20,505 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:20,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-13 19:40:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:40:22,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:22,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 326 [2021-10-13 19:40:22,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:40:22,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:22,815 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:40:22,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:40:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:23,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006295076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:23,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:23,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:40:23,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764355821] [2021-10-13 19:40:23,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:23,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:23,345 INFO L87 Difference]: Start difference. First operand 291 states and 697 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:24,584 INFO L93 Difference]: Finished difference Result 367 states and 819 transitions. [2021-10-13 19:40:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:40:24,585 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:24,586 INFO L225 Difference]: With dead ends: 367 [2021-10-13 19:40:24,586 INFO L226 Difference]: Without dead ends: 367 [2021-10-13 19:40:24,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1523.3ms TimeCoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:40:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-10-13 19:40:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 289. [2021-10-13 19:40:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 2.4350877192982456) internal successors, (694), 288 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 694 transitions. [2021-10-13 19:40:24,591 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 694 transitions. Word has length 16 [2021-10-13 19:40:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:24,591 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 694 transitions. [2021-10-13 19:40:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 694 transitions. [2021-10-13 19:40:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:24,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:24,592 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:24,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:24,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-13 19:40:24,793 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash -400987196, now seen corresponding path program 38 times [2021-10-13 19:40:24,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:24,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844352340] [2021-10-13 19:40:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:24,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:25,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:25,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844352340] [2021-10-13 19:40:25,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844352340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:25,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254486970] [2021-10-13 19:40:25,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:40:25,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:25,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:25,731 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:25,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-13 19:40:27,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:40:27,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:27,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:40:27,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:27,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:40:27,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:40:27,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:28,014 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:28,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:28,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254486970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:28,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:28,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:40:28,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670523766] [2021-10-13 19:40:28,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:28,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:28,663 INFO L87 Difference]: Start difference. First operand 289 states and 694 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:31,388 INFO L93 Difference]: Finished difference Result 335 states and 734 transitions. [2021-10-13 19:40:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:40:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:31,390 INFO L225 Difference]: With dead ends: 335 [2021-10-13 19:40:31,390 INFO L226 Difference]: Without dead ends: 329 [2021-10-13 19:40:31,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 2766.2ms TimeCoverageRelationStatistics Valid=327, Invalid=2025, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:40:31,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-10-13 19:40:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 273. [2021-10-13 19:40:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 2.379182156133829) internal successors, (640), 272 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 640 transitions. [2021-10-13 19:40:31,396 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 640 transitions. Word has length 16 [2021-10-13 19:40:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:31,396 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 640 transitions. [2021-10-13 19:40:31,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 640 transitions. [2021-10-13 19:40:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:31,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:31,397 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:31,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:31,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:31,600 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash -400976966, now seen corresponding path program 39 times [2021-10-13 19:40:31,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:31,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371367690] [2021-10-13 19:40:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:31,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:32,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:32,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371367690] [2021-10-13 19:40:32,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371367690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:32,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283720914] [2021-10-13 19:40:32,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:40:32,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:32,326 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:32,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-13 19:40:34,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:40:34,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:34,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:40:34,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:34,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 406 treesize of output 398 [2021-10-13 19:40:34,401 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:34,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:40:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283720914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:34,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:34,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-13 19:40:34,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042411076] [2021-10-13 19:40:34,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:40:34,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:40:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:40:34,708 INFO L87 Difference]: Start difference. First operand 273 states and 640 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:36,747 INFO L93 Difference]: Finished difference Result 357 states and 794 transitions. [2021-10-13 19:40:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:40:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:36,749 INFO L225 Difference]: With dead ends: 357 [2021-10-13 19:40:36,749 INFO L226 Difference]: Without dead ends: 345 [2021-10-13 19:40:36,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1779.5ms TimeCoverageRelationStatistics Valid=233, Invalid=1573, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:40:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-10-13 19:40:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 275. [2021-10-13 19:40:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 2.357933579335793) internal successors, (639), 274 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 639 transitions. [2021-10-13 19:40:36,757 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 639 transitions. Word has length 16 [2021-10-13 19:40:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:36,758 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 639 transitions. [2021-10-13 19:40:36,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 639 transitions. [2021-10-13 19:40:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:36,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:36,759 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:36,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:36,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-10-13 19:40:36,960 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash -391156166, now seen corresponding path program 40 times [2021-10-13 19:40:36,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:36,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066191152] [2021-10-13 19:40:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:36,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:37,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:37,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066191152] [2021-10-13 19:40:37,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066191152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:37,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614507774] [2021-10-13 19:40:37,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:40:37,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:37,853 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:37,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-13 19:40:39,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:40:39,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:39,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:40:39,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:39,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:40:39,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:39,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:39,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:40,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:40,210 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:40,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614507774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:40,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:40,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 19:40:40,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118604017] [2021-10-13 19:40:40,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:40,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:40,845 INFO L87 Difference]: Start difference. First operand 275 states and 639 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:43,563 INFO L93 Difference]: Finished difference Result 331 states and 726 transitions. [2021-10-13 19:40:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:40:43,564 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:43,565 INFO L225 Difference]: With dead ends: 331 [2021-10-13 19:40:43,565 INFO L226 Difference]: Without dead ends: 327 [2021-10-13 19:40:43,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 2962.8ms TimeCoverageRelationStatistics Valid=294, Invalid=2256, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:40:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-13 19:40:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 269. [2021-10-13 19:40:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 2.362264150943396) internal successors, (626), 268 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 626 transitions. [2021-10-13 19:40:43,570 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 626 transitions. Word has length 16 [2021-10-13 19:40:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:43,570 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 626 transitions. [2021-10-13 19:40:43,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 626 transitions. [2021-10-13 19:40:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:43,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:43,571 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:43,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-13 19:40:43,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:43,772 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash -391145936, now seen corresponding path program 41 times [2021-10-13 19:40:43,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:43,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349689251] [2021-10-13 19:40:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:43,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:44,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:44,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349689251] [2021-10-13 19:40:44,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349689251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:44,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531410642] [2021-10-13 19:40:44,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:40:44,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:44,742 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:44,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 19:40:46,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:40:46,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:46,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 19:40:46,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:46,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-10-13 19:40:46,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:40:46,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:47,163 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:40:47,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:40:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531410642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:47,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:47,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:40:47,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786706900] [2021-10-13 19:40:47,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:47,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:47,670 INFO L87 Difference]: Start difference. First operand 269 states and 626 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:49,387 INFO L93 Difference]: Finished difference Result 313 states and 695 transitions. [2021-10-13 19:40:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:40:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:49,388 INFO L225 Difference]: With dead ends: 313 [2021-10-13 19:40:49,388 INFO L226 Difference]: Without dead ends: 307 [2021-10-13 19:40:49,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2007.8ms TimeCoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:40:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-10-13 19:40:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2021-10-13 19:40:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 2.355805243445693) internal successors, (629), 270 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 629 transitions. [2021-10-13 19:40:49,395 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 629 transitions. Word has length 16 [2021-10-13 19:40:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:49,395 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 629 transitions. [2021-10-13 19:40:49,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 629 transitions. [2021-10-13 19:40:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:49,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:49,396 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:49,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:49,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-13 19:40:49,597 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:49,597 INFO L82 PathProgramCache]: Analyzing trace with hash -390828806, now seen corresponding path program 42 times [2021-10-13 19:40:49,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:49,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601995842] [2021-10-13 19:40:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:49,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:50,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:50,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601995842] [2021-10-13 19:40:50,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601995842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:50,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091514380] [2021-10-13 19:40:50,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:40:50,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:50,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:50,467 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:50,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-13 19:40:52,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:40:52,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:52,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:40:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:52,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 134 [2021-10-13 19:40:52,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:52,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:52,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:40:52,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:52,841 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:52,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:40:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:53,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091514380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:53,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:53,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:40:53,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790912116] [2021-10-13 19:40:53,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:40:53,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:40:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:40:53,457 INFO L87 Difference]: Start difference. First operand 271 states and 629 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:40:55,144 INFO L93 Difference]: Finished difference Result 311 states and 694 transitions. [2021-10-13 19:40:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:40:55,145 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:40:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:40:55,146 INFO L225 Difference]: With dead ends: 311 [2021-10-13 19:40:55,147 INFO L226 Difference]: Without dead ends: 311 [2021-10-13 19:40:55,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2025.2ms TimeCoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:40:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-13 19:40:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 269. [2021-10-13 19:40:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 2.362264150943396) internal successors, (626), 268 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 626 transitions. [2021-10-13 19:40:55,153 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 626 transitions. Word has length 16 [2021-10-13 19:40:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:40:55,153 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 626 transitions. [2021-10-13 19:40:55,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:40:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 626 transitions. [2021-10-13 19:40:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:40:55,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:40:55,153 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:40:55,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-13 19:40:55,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:55,354 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:40:55,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:40:55,355 INFO L82 PathProgramCache]: Analyzing trace with hash 625198868, now seen corresponding path program 11 times [2021-10-13 19:40:55,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:40:55,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268573376] [2021-10-13 19:40:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:40:55,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:40:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:40:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:56,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:40:56,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268573376] [2021-10-13 19:40:56,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268573376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:56,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998727544] [2021-10-13 19:40:56,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:40:56,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:40:56,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:40:56,007 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:40:56,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-13 19:40:57,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:40:57,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:40:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:40:57,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:40:57,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:40:58,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:40:58,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 19:40:58,268 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:40:58,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:40:58,685 INFO L354 Elim1Store]: treesize reduction 161, result has 17.9 percent of original size [2021-10-13 19:40:58,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 65 [2021-10-13 19:40:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:40:59,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998727544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:40:59,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:40:59,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:40:59,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068535515] [2021-10-13 19:40:59,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:40:59,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:40:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:40:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:40:59,083 INFO L87 Difference]: Start difference. First operand 269 states and 626 transitions. Second operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:01,044 INFO L93 Difference]: Finished difference Result 325 states and 729 transitions. [2021-10-13 19:41:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:41:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:41:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:01,045 INFO L225 Difference]: With dead ends: 325 [2021-10-13 19:41:01,045 INFO L226 Difference]: Without dead ends: 325 [2021-10-13 19:41:01,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2152.7ms TimeCoverageRelationStatistics Valid=185, Invalid=1537, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:41:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-13 19:41:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 276. [2021-10-13 19:41:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.3455882352941178) internal successors, (638), 275 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 638 transitions. [2021-10-13 19:41:01,050 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 638 transitions. Word has length 16 [2021-10-13 19:41:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:01,050 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 638 transitions. [2021-10-13 19:41:01,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 638 transitions. [2021-10-13 19:41:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:41:01,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:01,051 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:01,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:01,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-13 19:41:01,252 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:01,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash 625198821, now seen corresponding path program 11 times [2021-10-13 19:41:01,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:01,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234773146] [2021-10-13 19:41:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:01,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:01,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:01,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234773146] [2021-10-13 19:41:01,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234773146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:01,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970811378] [2021-10-13 19:41:01,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:01,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:01,571 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:01,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-13 19:41:03,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:41:03,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:03,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:41:03,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:03,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:41:03,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 19:41:03,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:41:04,109 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:41:04,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:41:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:04,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970811378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:04,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:04,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:41:04,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325149999] [2021-10-13 19:41:04,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:41:04,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:41:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:04,269 INFO L87 Difference]: Start difference. First operand 276 states and 638 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:05,214 INFO L93 Difference]: Finished difference Result 289 states and 655 transitions. [2021-10-13 19:41:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:41:05,215 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:41:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:05,216 INFO L225 Difference]: With dead ends: 289 [2021-10-13 19:41:05,216 INFO L226 Difference]: Without dead ends: 271 [2021-10-13 19:41:05,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1030.0ms TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:41:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-13 19:41:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2021-10-13 19:41:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 2.3702290076335877) internal successors, (621), 265 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 621 transitions. [2021-10-13 19:41:05,220 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 621 transitions. Word has length 16 [2021-10-13 19:41:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:05,220 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 621 transitions. [2021-10-13 19:41:05,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 621 transitions. [2021-10-13 19:41:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:41:05,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:05,221 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:05,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:05,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:05,422 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2085285522, now seen corresponding path program 43 times [2021-10-13 19:41:05,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:05,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379438055] [2021-10-13 19:41:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:05,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:06,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:06,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379438055] [2021-10-13 19:41:06,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379438055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:06,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821582546] [2021-10-13 19:41:06,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:41:06,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:06,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:06,026 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:06,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-13 19:41:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:08,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:41:08,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:08,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:41:08,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:41:08,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:41:08,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:41:08,737 INFO L354 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2021-10-13 19:41:08,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-13 19:41:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:09,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821582546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:09,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:09,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-10-13 19:41:09,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745835633] [2021-10-13 19:41:09,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:41:09,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:41:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:41:09,094 INFO L87 Difference]: Start difference. First operand 266 states and 621 transitions. Second operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:10,260 INFO L93 Difference]: Finished difference Result 292 states and 664 transitions. [2021-10-13 19:41:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:41:10,261 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:41:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:10,262 INFO L225 Difference]: With dead ends: 292 [2021-10-13 19:41:10,262 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 19:41:10,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1337.2ms TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:41:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 19:41:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 263. [2021-10-13 19:41:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 2.382239382239382) internal successors, (617), 262 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 617 transitions. [2021-10-13 19:41:10,266 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 617 transitions. Word has length 16 [2021-10-13 19:41:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:10,266 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 617 transitions. [2021-10-13 19:41:10,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 617 transitions. [2021-10-13 19:41:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:41:10,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:10,267 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:10,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-13 19:41:10,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-10-13 19:41:10,468 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1871067838, now seen corresponding path program 44 times [2021-10-13 19:41:10,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:10,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044546783] [2021-10-13 19:41:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:10,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:11,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:11,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044546783] [2021-10-13 19:41:11,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044546783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:11,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328588201] [2021-10-13 19:41:11,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:11,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:11,177 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:11,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-13 19:41:13,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:41:13,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:13,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 19:41:13,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:13,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:41:13,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:41:13,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 19:41:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:41:13,761 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-13 19:41:13,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 19:41:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:14,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328588201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:14,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:14,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-13 19:41:14,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840399097] [2021-10-13 19:41:14,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:41:14,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:41:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:41:14,218 INFO L87 Difference]: Start difference. First operand 263 states and 617 transitions. Second operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:15,233 INFO L93 Difference]: Finished difference Result 271 states and 627 transitions. [2021-10-13 19:41:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:41:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:41:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:15,234 INFO L225 Difference]: With dead ends: 271 [2021-10-13 19:41:15,234 INFO L226 Difference]: Without dead ends: 265 [2021-10-13 19:41:15,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1288.0ms TimeCoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:41:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-13 19:41:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 257. [2021-10-13 19:41:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 2.3952569169960474) internal successors, (606), 256 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 606 transitions. [2021-10-13 19:41:15,239 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 606 transitions. Word has length 16 [2021-10-13 19:41:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:15,239 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 606 transitions. [2021-10-13 19:41:15,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 606 transitions. [2021-10-13 19:41:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:41:15,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:15,240 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:15,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-13 19:41:15,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:15,441 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1871384968, now seen corresponding path program 45 times [2021-10-13 19:41:15,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:15,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144613487] [2021-10-13 19:41:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:15,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:16,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:16,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144613487] [2021-10-13 19:41:16,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144613487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:16,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621058645] [2021-10-13 19:41:16,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:41:16,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:16,112 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-13 19:41:18,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:41:18,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:18,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:41:18,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:18,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 364 [2021-10-13 19:41:18,708 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:41:18,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 19:41:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:41:19,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621058645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:19,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:19,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-13 19:41:19,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952827262] [2021-10-13 19:41:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:41:19,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:41:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:41:19,039 INFO L87 Difference]: Start difference. First operand 257 states and 606 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:21,114 INFO L93 Difference]: Finished difference Result 323 states and 761 transitions. [2021-10-13 19:41:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:41:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 19:41:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:21,116 INFO L225 Difference]: With dead ends: 323 [2021-10-13 19:41:21,116 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 19:41:21,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1879.3ms TimeCoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:41:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 19:41:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 246. [2021-10-13 19:41:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 2.4173553719008263) internal successors, (585), 245 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 585 transitions. [2021-10-13 19:41:21,122 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 585 transitions. Word has length 16 [2021-10-13 19:41:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:21,122 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 585 transitions. [2021-10-13 19:41:21,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 585 transitions. [2021-10-13 19:41:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:21,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:21,123 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:21,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:21,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-13 19:41:21,324 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:21,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:21,324 INFO L82 PathProgramCache]: Analyzing trace with hash -967481812, now seen corresponding path program 16 times [2021-10-13 19:41:21,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:21,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228567262] [2021-10-13 19:41:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:21,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:21,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:21,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228567262] [2021-10-13 19:41:21,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228567262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:21,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342017350] [2021-10-13 19:41:21,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:21,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:21,750 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:21,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-13 19:41:23,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:23,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:23,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:41:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342017350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:24,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:24,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:41:24,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960339497] [2021-10-13 19:41:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:41:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:41:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:24,287 INFO L87 Difference]: Start difference. First operand 246 states and 585 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:25,642 INFO L93 Difference]: Finished difference Result 629 states and 1434 transitions. [2021-10-13 19:41:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:41:25,642 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:25,644 INFO L225 Difference]: With dead ends: 629 [2021-10-13 19:41:25,644 INFO L226 Difference]: Without dead ends: 629 [2021-10-13 19:41:25,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1276.6ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:41:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-10-13 19:41:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 260. [2021-10-13 19:41:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 2.41015625) internal successors, (617), 259 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 617 transitions. [2021-10-13 19:41:25,650 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 617 transitions. Word has length 17 [2021-10-13 19:41:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:25,650 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 617 transitions. [2021-10-13 19:41:25,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 617 transitions. [2021-10-13 19:41:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:25,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:25,651 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:25,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:25,852 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1181710377, now seen corresponding path program 12 times [2021-10-13 19:41:25,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722823020] [2021-10-13 19:41:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:25,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:26,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:26,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722823020] [2021-10-13 19:41:26,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722823020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:26,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910359877] [2021-10-13 19:41:26,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:26,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:26,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:26,424 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:26,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 19:41:28,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:41:28,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:28,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:41:28,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:28,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910359877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:28,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:28,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-13 19:41:28,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876794043] [2021-10-13 19:41:28,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:41:28,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:41:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:41:28,847 INFO L87 Difference]: Start difference. First operand 260 states and 617 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:29,751 INFO L93 Difference]: Finished difference Result 368 states and 826 transitions. [2021-10-13 19:41:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:41:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:29,753 INFO L225 Difference]: With dead ends: 368 [2021-10-13 19:41:29,753 INFO L226 Difference]: Without dead ends: 354 [2021-10-13 19:41:29,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1055.1ms TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:41:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-13 19:41:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 244. [2021-10-13 19:41:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 2.4583333333333335) internal successors, (590), 243 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 590 transitions. [2021-10-13 19:41:29,759 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 590 transitions. Word has length 17 [2021-10-13 19:41:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:29,760 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 590 transitions. [2021-10-13 19:41:29,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 590 transitions. [2021-10-13 19:41:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:29,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:29,761 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:29,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:29,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:29,974 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1181710424, now seen corresponding path program 12 times [2021-10-13 19:41:29,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:29,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700669156] [2021-10-13 19:41:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:29,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:30,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:30,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700669156] [2021-10-13 19:41:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700669156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:30,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573003868] [2021-10-13 19:41:30,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:30,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:30,648 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:30,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-13 19:41:32,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:41:32,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:32,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:41:32,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:33,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573003868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:33,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:33,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-13 19:41:33,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250201175] [2021-10-13 19:41:33,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:41:33,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:33,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:41:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:41:33,099 INFO L87 Difference]: Start difference. First operand 244 states and 590 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:34,031 INFO L93 Difference]: Finished difference Result 344 states and 789 transitions. [2021-10-13 19:41:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:41:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:34,033 INFO L225 Difference]: With dead ends: 344 [2021-10-13 19:41:34,033 INFO L226 Difference]: Without dead ends: 336 [2021-10-13 19:41:34,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1196.8ms TimeCoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:41:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-13 19:41:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 244. [2021-10-13 19:41:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 2.45) internal successors, (588), 243 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 588 transitions. [2021-10-13 19:41:34,039 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 588 transitions. Word has length 17 [2021-10-13 19:41:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:34,039 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 588 transitions. [2021-10-13 19:41:34,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 588 transitions. [2021-10-13 19:41:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:34,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:34,040 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:34,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:34,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:34,241 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:34,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1181709726, now seen corresponding path program 17 times [2021-10-13 19:41:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:34,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687685627] [2021-10-13 19:41:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:34,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:34,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:34,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687685627] [2021-10-13 19:41:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687685627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:34,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868860394] [2021-10-13 19:41:34,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:34,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:34,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:34,826 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:34,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-13 19:41:37,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:41:37,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:37,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 19:41:37,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:37,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868860394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:37,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:37,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-13 19:41:37,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677912920] [2021-10-13 19:41:37,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:41:37,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:37,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:41:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:41:37,532 INFO L87 Difference]: Start difference. First operand 244 states and 588 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:39,402 INFO L93 Difference]: Finished difference Result 572 states and 1449 transitions. [2021-10-13 19:41:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:41:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:39,405 INFO L225 Difference]: With dead ends: 572 [2021-10-13 19:41:39,405 INFO L226 Difference]: Without dead ends: 572 [2021-10-13 19:41:39,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1699.5ms TimeCoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:41:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-13 19:41:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 303. [2021-10-13 19:41:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 299 states have (on average 2.4414715719063547) internal successors, (730), 302 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 730 transitions. [2021-10-13 19:41:39,412 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 730 transitions. Word has length 17 [2021-10-13 19:41:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:39,412 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 730 transitions. [2021-10-13 19:41:39,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 730 transitions. [2021-10-13 19:41:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:39,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:39,413 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:39,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:39,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 19:41:39,614 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1181709773, now seen corresponding path program 46 times [2021-10-13 19:41:39,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:39,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382601184] [2021-10-13 19:41:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:39,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:40,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:40,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382601184] [2021-10-13 19:41:40,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382601184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:40,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639710704] [2021-10-13 19:41:40,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:40,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:40,587 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:40,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-13 19:41:42,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:42,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:42,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:41:42,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:43,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639710704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:43,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:43,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:41:43,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888336339] [2021-10-13 19:41:43,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:41:43,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:41:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:41:43,428 INFO L87 Difference]: Start difference. First operand 303 states and 730 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:45,462 INFO L93 Difference]: Finished difference Result 446 states and 1081 transitions. [2021-10-13 19:41:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:41:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:45,464 INFO L225 Difference]: With dead ends: 446 [2021-10-13 19:41:45,465 INFO L226 Difference]: Without dead ends: 438 [2021-10-13 19:41:45,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2110.2ms TimeCoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:41:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-13 19:41:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 307. [2021-10-13 19:41:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 303 states have (on average 2.442244224422442) internal successors, (740), 306 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 740 transitions. [2021-10-13 19:41:45,470 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 740 transitions. Word has length 17 [2021-10-13 19:41:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:45,483 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 740 transitions. [2021-10-13 19:41:45,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 740 transitions. [2021-10-13 19:41:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:45,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:45,484 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:45,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:45,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 19:41:45,684 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:45,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1181699543, now seen corresponding path program 47 times [2021-10-13 19:41:45,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:45,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336752525] [2021-10-13 19:41:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:45,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:46,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:46,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336752525] [2021-10-13 19:41:46,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336752525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:46,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887305652] [2021-10-13 19:41:46,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:46,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:46,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:46,761 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:46,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-13 19:41:48,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:41:48,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:41:48,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:49,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887305652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:49,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:49,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-13 19:41:49,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340516114] [2021-10-13 19:41:49,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:41:49,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:41:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:49,459 INFO L87 Difference]: Start difference. First operand 307 states and 740 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:51,337 INFO L93 Difference]: Finished difference Result 468 states and 1128 transitions. [2021-10-13 19:41:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:41:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:51,339 INFO L225 Difference]: With dead ends: 468 [2021-10-13 19:41:51,339 INFO L226 Difference]: Without dead ends: 452 [2021-10-13 19:41:51,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1774.1ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:41:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-13 19:41:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 307. [2021-10-13 19:41:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 303 states have (on average 2.442244224422442) internal successors, (740), 306 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 740 transitions. [2021-10-13 19:41:51,345 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 740 transitions. Word has length 17 [2021-10-13 19:41:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:51,345 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 740 transitions. [2021-10-13 19:41:51,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 740 transitions. [2021-10-13 19:41:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:51,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:51,346 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:51,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:51,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-13 19:41:51,547 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash 767476615, now seen corresponding path program 48 times [2021-10-13 19:41:51,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:51,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670218473] [2021-10-13 19:41:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:51,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:52,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:52,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670218473] [2021-10-13 19:41:52,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670218473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:52,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987662849] [2021-10-13 19:41:52,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:52,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:52,524 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:52,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-13 19:41:54,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:41:54,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:54,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:41:54,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:41:55,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987662849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:55,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:55,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-13 19:41:55,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898092705] [2021-10-13 19:41:55,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:41:55,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:41:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:55,199 INFO L87 Difference]: Start difference. First operand 307 states and 740 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:56,647 INFO L93 Difference]: Finished difference Result 408 states and 959 transitions. [2021-10-13 19:41:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:41:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:41:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:56,650 INFO L225 Difference]: With dead ends: 408 [2021-10-13 19:41:56,650 INFO L226 Difference]: Without dead ends: 400 [2021-10-13 19:41:56,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1727.7ms TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:41:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-13 19:41:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 313. [2021-10-13 19:41:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 309 states have (on average 2.43042071197411) internal successors, (751), 312 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 751 transitions. [2021-10-13 19:41:56,656 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 751 transitions. Word has length 17 [2021-10-13 19:41:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:56,656 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 751 transitions. [2021-10-13 19:41:56,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 751 transitions. [2021-10-13 19:41:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:56,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:56,657 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:56,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:56,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-13 19:41:56,858 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:41:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 777307645, now seen corresponding path program 49 times [2021-10-13 19:41:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:56,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901648829] [2021-10-13 19:41:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:56,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:57,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:57,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901648829] [2021-10-13 19:41:57,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901648829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:57,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744232294] [2021-10-13 19:41:57,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:41:57,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:57,818 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:41:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-13 19:42:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:42:00,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:00,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744232294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:00,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:00,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:42:00,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472197247] [2021-10-13 19:42:00,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:42:00,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:42:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:42:00,697 INFO L87 Difference]: Start difference. First operand 313 states and 751 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:02,602 INFO L93 Difference]: Finished difference Result 420 states and 1009 transitions. [2021-10-13 19:42:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:42:02,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:02,605 INFO L225 Difference]: With dead ends: 420 [2021-10-13 19:42:02,605 INFO L226 Difference]: Without dead ends: 416 [2021-10-13 19:42:02,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2154.9ms TimeCoverageRelationStatistics Valid=237, Invalid=1833, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:42:02,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-13 19:42:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 331. [2021-10-13 19:42:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 2.46177370030581) internal successors, (805), 330 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 805 transitions. [2021-10-13 19:42:02,611 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 805 transitions. Word has length 17 [2021-10-13 19:42:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:02,612 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 805 transitions. [2021-10-13 19:42:02,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 805 transitions. [2021-10-13 19:42:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:02,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:02,612 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:02,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:02,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:02,813 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1367474429, now seen corresponding path program 50 times [2021-10-13 19:42:02,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:02,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207038621] [2021-10-13 19:42:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:02,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:03,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:03,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207038621] [2021-10-13 19:42:03,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207038621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:03,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691658399] [2021-10-13 19:42:03,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:03,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:03,663 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:03,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 19:42:05,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:05,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:05,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:42:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:06,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691658399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:06,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:06,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-13 19:42:06,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391124553] [2021-10-13 19:42:06,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:42:06,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:42:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:42:06,420 INFO L87 Difference]: Start difference. First operand 331 states and 805 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:07,898 INFO L93 Difference]: Finished difference Result 458 states and 1079 transitions. [2021-10-13 19:42:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:42:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:07,900 INFO L225 Difference]: With dead ends: 458 [2021-10-13 19:42:07,900 INFO L226 Difference]: Without dead ends: 450 [2021-10-13 19:42:07,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1670.2ms TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:42:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-13 19:42:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 339. [2021-10-13 19:42:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 335 states have (on average 2.4507462686567165) internal successors, (821), 338 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 821 transitions. [2021-10-13 19:42:07,906 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 821 transitions. Word has length 17 [2021-10-13 19:42:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:07,906 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 821 transitions. [2021-10-13 19:42:07,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 821 transitions. [2021-10-13 19:42:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:07,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:07,907 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:07,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:08,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-13 19:42:08,108 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:08,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:08,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1367484659, now seen corresponding path program 51 times [2021-10-13 19:42:08,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:08,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130290046] [2021-10-13 19:42:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:08,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:08,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:08,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130290046] [2021-10-13 19:42:08,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130290046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:08,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141394291] [2021-10-13 19:42:08,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:08,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:08,962 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:08,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-13 19:42:11,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:42:11,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:11,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:42:11,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:42:11,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141394291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:11,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:11,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2021-10-13 19:42:11,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750740366] [2021-10-13 19:42:11,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:42:11,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:42:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:42:11,508 INFO L87 Difference]: Start difference. First operand 339 states and 821 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:12,795 INFO L93 Difference]: Finished difference Result 510 states and 1206 transitions. [2021-10-13 19:42:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:42:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:12,798 INFO L225 Difference]: With dead ends: 510 [2021-10-13 19:42:12,798 INFO L226 Difference]: Without dead ends: 494 [2021-10-13 19:42:12,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1174.0ms TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:42:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-13 19:42:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 331. [2021-10-13 19:42:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 2.46177370030581) internal successors, (805), 330 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 805 transitions. [2021-10-13 19:42:12,807 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 805 transitions. Word has length 17 [2021-10-13 19:42:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:12,807 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 805 transitions. [2021-10-13 19:42:12,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,807 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 805 transitions. [2021-10-13 19:42:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:12,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:12,808 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:12,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:13,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-13 19:42:13,023 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1377305459, now seen corresponding path program 52 times [2021-10-13 19:42:13,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:13,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52004045] [2021-10-13 19:42:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:13,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:13,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:13,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52004045] [2021-10-13 19:42:13,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52004045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:13,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051067627] [2021-10-13 19:42:13,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:13,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:13,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:13,904 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:13,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-13 19:42:16,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:16,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:16,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:42:16,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:16,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051067627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:16,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:16,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:42:16,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534897635] [2021-10-13 19:42:16,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:42:16,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:42:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:42:16,871 INFO L87 Difference]: Start difference. First operand 331 states and 805 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:18,790 INFO L93 Difference]: Finished difference Result 438 states and 1049 transitions. [2021-10-13 19:42:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:42:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:18,792 INFO L225 Difference]: With dead ends: 438 [2021-10-13 19:42:18,793 INFO L226 Difference]: Without dead ends: 434 [2021-10-13 19:42:18,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2031.4ms TimeCoverageRelationStatistics Valid=277, Invalid=1793, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:42:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-13 19:42:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 341. [2021-10-13 19:42:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 2.456973293768546) internal successors, (828), 340 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 828 transitions. [2021-10-13 19:42:18,801 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 828 transitions. Word has length 17 [2021-10-13 19:42:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 828 transitions. [2021-10-13 19:42:18,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 828 transitions. [2021-10-13 19:42:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:18,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:18,802 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:18,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:19,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-13 19:42:19,017 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1377315689, now seen corresponding path program 53 times [2021-10-13 19:42:19,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:19,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333883040] [2021-10-13 19:42:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:19,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:19,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:19,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333883040] [2021-10-13 19:42:19,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333883040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:19,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186412433] [2021-10-13 19:42:19,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:19,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:19,968 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:19,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-13 19:42:22,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:42:22,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:22,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:42:22,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:22,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186412433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:22,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:22,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-13 19:42:22,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778507596] [2021-10-13 19:42:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:42:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:42:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:42:22,716 INFO L87 Difference]: Start difference. First operand 341 states and 828 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:24,255 INFO L93 Difference]: Finished difference Result 526 states and 1243 transitions. [2021-10-13 19:42:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:42:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:24,257 INFO L225 Difference]: With dead ends: 526 [2021-10-13 19:42:24,257 INFO L226 Difference]: Without dead ends: 510 [2021-10-13 19:42:24,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1554.7ms TimeCoverageRelationStatistics Valid=187, Invalid=1453, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:42:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-13 19:42:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 333. [2021-10-13 19:42:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 329 states have (on average 2.4559270516717326) internal successors, (808), 332 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 808 transitions. [2021-10-13 19:42:24,264 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 808 transitions. Word has length 17 [2021-10-13 19:42:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:24,264 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 808 transitions. [2021-10-13 19:42:24,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 808 transitions. [2021-10-13 19:42:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:24,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:24,265 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:24,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:24,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:24,466 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1041666213, now seen corresponding path program 54 times [2021-10-13 19:42:24,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:24,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179776953] [2021-10-13 19:42:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:24,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:25,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:25,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179776953] [2021-10-13 19:42:25,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179776953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:25,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997449667] [2021-10-13 19:42:25,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:42:25,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:25,628 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:25,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-13 19:42:28,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:42:28,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:28,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:42:28,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:28,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2021-10-13 19:42:28,291 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:42:28,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:42:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:28,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997449667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:28,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:28,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:42:28,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966308277] [2021-10-13 19:42:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:42:28,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:42:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:42:28,652 INFO L87 Difference]: Start difference. First operand 333 states and 808 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:30,675 INFO L93 Difference]: Finished difference Result 601 states and 1437 transitions. [2021-10-13 19:42:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:42:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:30,678 INFO L225 Difference]: With dead ends: 601 [2021-10-13 19:42:30,678 INFO L226 Difference]: Without dead ends: 601 [2021-10-13 19:42:30,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2005.5ms TimeCoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:42:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-10-13 19:42:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 339. [2021-10-13 19:42:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 335 states have (on average 2.453731343283582) internal successors, (822), 338 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 822 transitions. [2021-10-13 19:42:30,685 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 822 transitions. Word has length 17 [2021-10-13 19:42:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:30,685 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 822 transitions. [2021-10-13 19:42:30,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 822 transitions. [2021-10-13 19:42:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:30,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:30,685 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:30,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:30,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2021-10-13 19:42:30,888 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:30,888 INFO L82 PathProgramCache]: Analyzing trace with hash 827438299, now seen corresponding path program 55 times [2021-10-13 19:42:30,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:30,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296073273] [2021-10-13 19:42:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:30,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:32,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:32,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296073273] [2021-10-13 19:42:32,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296073273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:32,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030192751] [2021-10-13 19:42:32,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:32,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:32,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:32,145 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:32,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-13 19:42:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:34,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:42:34,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:34,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 181 [2021-10-13 19:42:34,854 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:42:34,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:42:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:35,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030192751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:35,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:35,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-13 19:42:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498202654] [2021-10-13 19:42:35,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:42:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:35,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:42:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:42:35,331 INFO L87 Difference]: Start difference. First operand 339 states and 822 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:38,050 INFO L93 Difference]: Finished difference Result 524 states and 1272 transitions. [2021-10-13 19:42:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:42:38,051 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:38,053 INFO L225 Difference]: With dead ends: 524 [2021-10-13 19:42:38,053 INFO L226 Difference]: Without dead ends: 520 [2021-10-13 19:42:38,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2750.9ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:42:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-13 19:42:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 347. [2021-10-13 19:42:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.454810495626822) internal successors, (842), 346 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 842 transitions. [2021-10-13 19:42:38,060 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 842 transitions. Word has length 17 [2021-10-13 19:42:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:38,060 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 842 transitions. [2021-10-13 19:42:38,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 842 transitions. [2021-10-13 19:42:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:38,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:38,061 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:38,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-10-13 19:42:38,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:38,262 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash 827448529, now seen corresponding path program 56 times [2021-10-13 19:42:38,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:38,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046182183] [2021-10-13 19:42:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:38,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:39,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:39,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046182183] [2021-10-13 19:42:39,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046182183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:39,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949160] [2021-10-13 19:42:39,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:39,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:39,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:39,456 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 19:42:41,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:41,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:41,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:42:41,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:41,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 475 treesize of output 459 [2021-10-13 19:42:42,170 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:42:42,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:42:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:42,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:42,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:42,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:42:42,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571837498] [2021-10-13 19:42:42,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:42:42,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:42:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:42:42,534 INFO L87 Difference]: Start difference. First operand 347 states and 842 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:44,636 INFO L93 Difference]: Finished difference Result 567 states and 1365 transitions. [2021-10-13 19:42:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 19:42:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:44,640 INFO L225 Difference]: With dead ends: 567 [2021-10-13 19:42:44,640 INFO L226 Difference]: Without dead ends: 551 [2021-10-13 19:42:44,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 2191.9ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:42:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-13 19:42:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 343. [2021-10-13 19:42:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 339 states have (on average 2.454277286135693) internal successors, (832), 342 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 832 transitions. [2021-10-13 19:42:44,650 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 832 transitions. Word has length 17 [2021-10-13 19:42:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:44,650 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 832 transitions. [2021-10-13 19:42:44,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 832 transitions. [2021-10-13 19:42:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:44,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:44,652 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:44,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:44,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:44,865 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:44,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1518342609, now seen corresponding path program 57 times [2021-10-13 19:42:44,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:44,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224295650] [2021-10-13 19:42:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:44,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:46,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:46,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224295650] [2021-10-13 19:42:46,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224295650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:46,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916880264] [2021-10-13 19:42:46,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:46,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:46,214 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:46,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-13 19:42:48,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:42:48,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:42:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:48,942 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:42:48,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:42:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:42:49,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916880264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:49,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-13 19:42:49,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860784634] [2021-10-13 19:42:49,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:42:49,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:49,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:42:49,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:42:49,303 INFO L87 Difference]: Start difference. First operand 343 states and 832 transitions. Second operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:51,187 INFO L93 Difference]: Finished difference Result 482 states and 1134 transitions. [2021-10-13 19:42:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:42:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:51,189 INFO L225 Difference]: With dead ends: 482 [2021-10-13 19:42:51,189 INFO L226 Difference]: Without dead ends: 474 [2021-10-13 19:42:51,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2288.4ms TimeCoverageRelationStatistics Valid=226, Invalid=1936, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:42:51,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-13 19:42:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 335. [2021-10-13 19:42:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 2.4652567975830815) internal successors, (816), 334 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 816 transitions. [2021-10-13 19:42:51,196 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 816 transitions. Word has length 17 [2021-10-13 19:42:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:51,196 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 816 transitions. [2021-10-13 19:42:51,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 816 transitions. [2021-10-13 19:42:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:51,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:51,196 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:51,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:51,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-13 19:42:51,398 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1508511579, now seen corresponding path program 58 times [2021-10-13 19:42:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:51,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066751732] [2021-10-13 19:42:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:51,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:52,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:52,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066751732] [2021-10-13 19:42:52,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066751732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:52,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548637402] [2021-10-13 19:42:52,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:52,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:52,852 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-13 19:42:55,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:55,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:55,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:42:55,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:55,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:42:55,575 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:42:55,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:42:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:42:56,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548637402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:56,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:56,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-13 19:42:56,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121448174] [2021-10-13 19:42:56,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:42:56,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:42:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:42:56,118 INFO L87 Difference]: Start difference. First operand 335 states and 816 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:58,384 INFO L93 Difference]: Finished difference Result 502 states and 1217 transitions. [2021-10-13 19:42:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:42:58,385 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:42:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:58,386 INFO L225 Difference]: With dead ends: 502 [2021-10-13 19:42:58,387 INFO L226 Difference]: Without dead ends: 498 [2021-10-13 19:42:58,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2703.1ms TimeCoverageRelationStatistics Valid=255, Invalid=2295, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:42:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-13 19:42:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 341. [2021-10-13 19:42:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 2.4658753709198815) internal successors, (831), 340 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 831 transitions. [2021-10-13 19:42:58,394 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 831 transitions. Word has length 17 [2021-10-13 19:42:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:58,394 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 831 transitions. [2021-10-13 19:42:58,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 831 transitions. [2021-10-13 19:42:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:42:58,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:58,395 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:42:58,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-13 19:42:58,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-13 19:42:58,596 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:42:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1508501349, now seen corresponding path program 59 times [2021-10-13 19:42:58,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:58,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946236634] [2021-10-13 19:42:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:58,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:59,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:59,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946236634] [2021-10-13 19:42:59,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946236634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:59,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855910241] [2021-10-13 19:42:59,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:59,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:59,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:59,800 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:42:59,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-13 19:43:02,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:43:02,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:02,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:43:02,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:02,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:43:02,465 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:43:02,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:43:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:02,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855910241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:02,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:43:02,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795689894] [2021-10-13 19:43:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:43:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:43:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:43:02,845 INFO L87 Difference]: Start difference. First operand 341 states and 831 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:04,370 INFO L93 Difference]: Finished difference Result 527 states and 1256 transitions. [2021-10-13 19:43:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:43:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:04,372 INFO L225 Difference]: With dead ends: 527 [2021-10-13 19:43:04,372 INFO L226 Difference]: Without dead ends: 511 [2021-10-13 19:43:04,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1827.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:43:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-13 19:43:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 337. [2021-10-13 19:43:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 2.4654654654654653) internal successors, (821), 336 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 821 transitions. [2021-10-13 19:43:04,377 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 821 transitions. Word has length 17 [2021-10-13 19:43:04,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:04,377 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 821 transitions. [2021-10-13 19:43:04,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 821 transitions. [2021-10-13 19:43:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:04,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:04,378 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:04,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:04,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-13 19:43:04,579 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1508184219, now seen corresponding path program 60 times [2021-10-13 19:43:04,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:04,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096500496] [2021-10-13 19:43:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:04,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:06,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:06,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096500496] [2021-10-13 19:43:06,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096500496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:06,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278570442] [2021-10-13 19:43:06,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:43:06,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:06,130 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-13 19:43:08,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:43:08,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:08,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:43:08,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:08,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 101 [2021-10-13 19:43:08,874 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:43:08,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:43:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:09,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278570442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:09,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:09,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:43:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033402616] [2021-10-13 19:43:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:43:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:43:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:43:09,235 INFO L87 Difference]: Start difference. First operand 337 states and 821 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:10,799 INFO L93 Difference]: Finished difference Result 457 states and 1098 transitions. [2021-10-13 19:43:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:43:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:10,801 INFO L225 Difference]: With dead ends: 457 [2021-10-13 19:43:10,801 INFO L226 Difference]: Without dead ends: 457 [2021-10-13 19:43:10,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1925.4ms TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:43:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-10-13 19:43:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 331. [2021-10-13 19:43:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 2.4648318042813457) internal successors, (806), 330 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 806 transitions. [2021-10-13 19:43:10,807 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 806 transitions. Word has length 17 [2021-10-13 19:43:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:10,807 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 806 transitions. [2021-10-13 19:43:10,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 806 transitions. [2021-10-13 19:43:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:10,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:10,808 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:10,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-13 19:43:11,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-13 19:43:11,010 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:11,011 INFO L82 PathProgramCache]: Analyzing trace with hash -492156545, now seen corresponding path program 13 times [2021-10-13 19:43:11,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:11,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930088789] [2021-10-13 19:43:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:11,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:12,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:12,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930088789] [2021-10-13 19:43:12,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930088789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:12,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318417366] [2021-10-13 19:43:12,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:12,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:12,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:12,316 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:12,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-13 19:43:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:14,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:43:14,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:14,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 145 [2021-10-13 19:43:15,128 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:43:15,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:43:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:15,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318417366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:15,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:15,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-13 19:43:15,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178672088] [2021-10-13 19:43:15,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:43:15,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:43:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:43:15,262 INFO L87 Difference]: Start difference. First operand 331 states and 806 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:17,279 INFO L93 Difference]: Finished difference Result 512 states and 1158 transitions. [2021-10-13 19:43:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:43:17,280 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:17,281 INFO L225 Difference]: With dead ends: 512 [2021-10-13 19:43:17,281 INFO L226 Difference]: Without dead ends: 512 [2021-10-13 19:43:17,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2074.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:43:17,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-13 19:43:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 343. [2021-10-13 19:43:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 339 states have (on average 2.4365781710914454) internal successors, (826), 342 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 826 transitions. [2021-10-13 19:43:17,289 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 826 transitions. Word has length 17 [2021-10-13 19:43:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 826 transitions. [2021-10-13 19:43:17,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 826 transitions. [2021-10-13 19:43:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:17,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:17,290 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:17,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:17,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:17,493 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:17,494 INFO L82 PathProgramCache]: Analyzing trace with hash -492156592, now seen corresponding path program 13 times [2021-10-13 19:43:17,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:17,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402479247] [2021-10-13 19:43:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:17,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:18,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:18,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402479247] [2021-10-13 19:43:18,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402479247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:18,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246269856] [2021-10-13 19:43:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:18,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:18,069 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-13 19:43:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:20,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:43:20,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:20,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 351 [2021-10-13 19:43:20,872 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:43:20,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:43:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:20,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246269856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:20,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:20,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-13 19:43:20,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291821307] [2021-10-13 19:43:20,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:43:20,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:43:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:43:20,983 INFO L87 Difference]: Start difference. First operand 343 states and 826 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:21,819 INFO L93 Difference]: Finished difference Result 422 states and 935 transitions. [2021-10-13 19:43:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:43:21,819 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:21,820 INFO L225 Difference]: With dead ends: 422 [2021-10-13 19:43:21,820 INFO L226 Difference]: Without dead ends: 386 [2021-10-13 19:43:21,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 974.3ms TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:43:21,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-13 19:43:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 333. [2021-10-13 19:43:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 329 states have (on average 2.4559270516717326) internal successors, (808), 332 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 808 transitions. [2021-10-13 19:43:21,827 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 808 transitions. Word has length 17 [2021-10-13 19:43:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:21,827 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 808 transitions. [2021-10-13 19:43:21,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 808 transitions. [2021-10-13 19:43:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:21,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:21,828 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:21,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-10-13 19:43:22,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-10-13 19:43:22,029 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 967930109, now seen corresponding path program 61 times [2021-10-13 19:43:22,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:22,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957769922] [2021-10-13 19:43:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:22,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:23,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:23,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957769922] [2021-10-13 19:43:23,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957769922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777626447] [2021-10-13 19:43:23,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:23,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:23,317 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:23,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 19:43:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:25,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:43:25,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:25,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 113 [2021-10-13 19:43:26,292 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:43:26,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 19:43:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:26,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777626447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:26,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:26,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-13 19:43:26,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83994443] [2021-10-13 19:43:26,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:43:26,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:43:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:43:26,613 INFO L87 Difference]: Start difference. First operand 333 states and 808 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:29,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:29,081 INFO L93 Difference]: Finished difference Result 551 states and 1282 transitions. [2021-10-13 19:43:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:43:29,082 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:29,083 INFO L225 Difference]: With dead ends: 551 [2021-10-13 19:43:29,084 INFO L226 Difference]: Without dead ends: 551 [2021-10-13 19:43:29,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 2432.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:43:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-13 19:43:29,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 333. [2021-10-13 19:43:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 329 states have (on average 2.4559270516717326) internal successors, (808), 332 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 808 transitions. [2021-10-13 19:43:29,090 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 808 transitions. Word has length 17 [2021-10-13 19:43:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:29,090 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 808 transitions. [2021-10-13 19:43:29,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 808 transitions. [2021-10-13 19:43:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:29,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:29,091 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:29,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-10-13 19:43:29,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:29,292 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash 753702195, now seen corresponding path program 62 times [2021-10-13 19:43:29,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:29,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191848984] [2021-10-13 19:43:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:29,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:30,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:30,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191848984] [2021-10-13 19:43:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191848984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:30,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889004190] [2021-10-13 19:43:30,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:43:30,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:30,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:30,379 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-13 19:43:32,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:43:32,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:32,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:43:32,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:32,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-13 19:43:33,262 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-13 19:43:33,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 19:43:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:33,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889004190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:33,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:33,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-13 19:43:33,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653127110] [2021-10-13 19:43:33,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:43:33,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:43:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:43:33,603 INFO L87 Difference]: Start difference. First operand 333 states and 808 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:35,936 INFO L93 Difference]: Finished difference Result 517 states and 1248 transitions. [2021-10-13 19:43:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:43:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:35,938 INFO L225 Difference]: With dead ends: 517 [2021-10-13 19:43:35,938 INFO L226 Difference]: Without dead ends: 513 [2021-10-13 19:43:35,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 2349.1ms TimeCoverageRelationStatistics Valid=253, Invalid=2297, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:43:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-10-13 19:43:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 335. [2021-10-13 19:43:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 2.4561933534743203) internal successors, (813), 334 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 813 transitions. [2021-10-13 19:43:35,944 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 813 transitions. Word has length 17 [2021-10-13 19:43:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:35,944 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 813 transitions. [2021-10-13 19:43:35,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 813 transitions. [2021-10-13 19:43:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:35,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:35,945 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:35,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:36,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:36,146 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash 753712425, now seen corresponding path program 63 times [2021-10-13 19:43:36,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:36,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931022004] [2021-10-13 19:43:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:36,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:37,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:37,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931022004] [2021-10-13 19:43:37,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931022004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:37,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519412565] [2021-10-13 19:43:37,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:43:37,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:37,501 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:37,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-13 19:43:40,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:43:40,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:40,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:43:40,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:40,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-13 19:43:40,251 INFO L354 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2021-10-13 19:43:40,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-13 19:43:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 19:43:40,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519412565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:40,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:40,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 22 [2021-10-13 19:43:40,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623683165] [2021-10-13 19:43:40,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:43:40,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:43:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:43:40,549 INFO L87 Difference]: Start difference. First operand 335 states and 813 transitions. Second operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:42,782 INFO L93 Difference]: Finished difference Result 550 states and 1304 transitions. [2021-10-13 19:43:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:43:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:42,784 INFO L225 Difference]: With dead ends: 550 [2021-10-13 19:43:42,784 INFO L226 Difference]: Without dead ends: 534 [2021-10-13 19:43:42,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2226.9ms TimeCoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:43:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-13 19:43:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2021-10-13 19:43:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 317 states have (on average 2.4574132492113563) internal successors, (779), 320 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 779 transitions. [2021-10-13 19:43:42,789 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 779 transitions. Word has length 17 [2021-10-13 19:43:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:42,790 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 779 transitions. [2021-10-13 19:43:42,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 779 transitions. [2021-10-13 19:43:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:42,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:42,790 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:42,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:42,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:42,991 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash 965551525, now seen corresponding path program 64 times [2021-10-13 19:43:42,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:42,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091187998] [2021-10-13 19:43:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:42,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:44,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:44,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091187998] [2021-10-13 19:43:44,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091187998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:44,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010606250] [2021-10-13 19:43:44,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:43:44,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:44,103 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:44,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-13 19:43:46,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:43:46,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:46,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:43:46,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:46,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-10-13 19:43:47,144 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-13 19:43:47,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 56 [2021-10-13 19:43:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:47,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010606250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:47,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:47,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-13 19:43:47,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90745260] [2021-10-13 19:43:47,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:43:47,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:43:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:43:47,403 INFO L87 Difference]: Start difference. First operand 321 states and 779 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:49,691 INFO L93 Difference]: Finished difference Result 500 states and 1174 transitions. [2021-10-13 19:43:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:43:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:49,692 INFO L225 Difference]: With dead ends: 500 [2021-10-13 19:43:49,692 INFO L226 Difference]: Without dead ends: 500 [2021-10-13 19:43:49,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2292.4ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:43:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-13 19:43:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 331. [2021-10-13 19:43:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 2.474006116207951) internal successors, (809), 330 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 809 transitions. [2021-10-13 19:43:49,698 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 809 transitions. Word has length 17 [2021-10-13 19:43:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:49,698 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 809 transitions. [2021-10-13 19:43:49,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 809 transitions. [2021-10-13 19:43:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:43:49,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:49,745 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:49,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-13 19:43:49,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:49,946 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1984834467, now seen corresponding path program 18 times [2021-10-13 19:43:49,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:49,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196198843] [2021-10-13 19:43:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:49,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:43:50,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:50,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196198843] [2021-10-13 19:43:50,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196198843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:50,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237810992] [2021-10-13 19:43:50,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:43:50,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:50,027 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:50,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-13 19:43:52,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:43:52,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:52,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:43:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:52,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237810992] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:52,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:52,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 15 [2021-10-13 19:43:52,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315165733] [2021-10-13 19:43:52,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:43:52,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:43:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:43:52,924 INFO L87 Difference]: Start difference. First operand 331 states and 809 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:53,174 INFO L93 Difference]: Finished difference Result 495 states and 1259 transitions. [2021-10-13 19:43:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:43:53,174 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 19:43:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:53,175 INFO L225 Difference]: With dead ends: 495 [2021-10-13 19:43:53,176 INFO L226 Difference]: Without dead ends: 448 [2021-10-13 19:43:53,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 260.7ms TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:43:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-13 19:43:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 396. [2021-10-13 19:43:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 394 states have (on average 2.7944162436548226) internal successors, (1101), 395 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1101 transitions. [2021-10-13 19:43:53,182 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1101 transitions. Word has length 17 [2021-10-13 19:43:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:53,182 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 1101 transitions. [2021-10-13 19:43:53,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1101 transitions. [2021-10-13 19:43:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:43:53,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:53,183 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:53,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:53,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:53,384 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 499028257, now seen corresponding path program 19 times [2021-10-13 19:43:53,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:53,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186550362] [2021-10-13 19:43:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:53,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:54,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:54,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186550362] [2021-10-13 19:43:54,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186550362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:54,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575064653] [2021-10-13 19:43:54,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:54,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:54,124 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:43:54,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-13 19:43:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:43:56,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:43:57,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575064653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:57,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:57,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 19:43:57,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979807277] [2021-10-13 19:43:57,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:43:57,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:43:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:43:57,140 INFO L87 Difference]: Start difference. First operand 396 states and 1101 transitions. Second operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:59,020 INFO L93 Difference]: Finished difference Result 708 states and 1813 transitions. [2021-10-13 19:43:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 19:43:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:43:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:59,023 INFO L225 Difference]: With dead ends: 708 [2021-10-13 19:43:59,023 INFO L226 Difference]: Without dead ends: 700 [2021-10-13 19:43:59,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1984.9ms TimeCoverageRelationStatistics Valid=267, Invalid=2085, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:43:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-13 19:43:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 302. [2021-10-13 19:43:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 2.7266666666666666) internal successors, (818), 301 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 818 transitions. [2021-10-13 19:43:59,030 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 818 transitions. Word has length 18 [2021-10-13 19:43:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:59,030 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 818 transitions. [2021-10-13 19:43:59,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 818 transitions. [2021-10-13 19:43:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:43:59,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:59,031 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:43:59,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2021-10-13 19:43:59,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-13 19:43:59,232 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:43:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash 687272137, now seen corresponding path program 20 times [2021-10-13 19:43:59,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:59,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699109197] [2021-10-13 19:43:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:59,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:01,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:01,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699109197] [2021-10-13 19:44:01,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699109197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:01,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352424920] [2021-10-13 19:44:01,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:01,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:01,033 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:01,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-13 19:44:03,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:03,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:03,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:44:03,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:04,077 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-13 19:44:04,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-13 19:44:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:04,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352424920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:04,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:04,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-13 19:44:04,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578227411] [2021-10-13 19:44:04,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:44:04,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:44:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:44:04,227 INFO L87 Difference]: Start difference. First operand 302 states and 818 transitions. Second operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:07,351 INFO L93 Difference]: Finished difference Result 574 states and 1422 transitions. [2021-10-13 19:44:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:44:07,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:44:07,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:07,353 INFO L225 Difference]: With dead ends: 574 [2021-10-13 19:44:07,353 INFO L226 Difference]: Without dead ends: 574 [2021-10-13 19:44:07,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3046.5ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:44:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-13 19:44:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 243. [2021-10-13 19:44:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 2.7053941908713695) internal successors, (652), 242 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 652 transitions. [2021-10-13 19:44:07,358 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 652 transitions. Word has length 18 [2021-10-13 19:44:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:07,358 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 652 transitions. [2021-10-13 19:44:07,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 652 transitions. [2021-10-13 19:44:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:44:07,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:07,359 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:07,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-10-13 19:44:07,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-13 19:44:07,560 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-13 19:44:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:07,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1520918696, now seen corresponding path program 65 times [2021-10-13 19:44:07,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:07,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438090679] [2021-10-13 19:44:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:07,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:08,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:08,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438090679] [2021-10-13 19:44:08,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438090679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:08,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302464911] [2021-10-13 19:44:08,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:44:08,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:08,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:08,593 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 19:44:08,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 19:44:10,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:44:10,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:44:11,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:44:11,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:11,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:44:11,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:11,193 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:11,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2021-10-13 19:44:11,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-13 19:44:11,395 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. [2021-10-13 19:44:11,398 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,398 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,398 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,403 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:44:11,412 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:44:11,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:44:11,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:44:11 BasicIcfg [2021-10-13 19:44:11,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:44:11,414 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-13 19:44:11,415 INFO L168 Benchmark]: Toolchain (without parser) took 511571.91 ms. Allocated memory was 152.0 MB in the beginning and 1.1 GB in the end (delta: 982.5 MB). Free memory was 127.6 MB in the beginning and 450.8 MB in the end (delta: -323.2 MB). Peak memory consumption was 660.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,415 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:44:11,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.59 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 116.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,416 INFO L168 Benchmark]: Boogie Preprocessor took 35.83 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 112.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,416 INFO L168 Benchmark]: RCFGBuilder took 1116.46 ms. Allocated memory is still 152.0 MB. Free memory was 112.8 MB in the beginning and 122.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,416 INFO L168 Benchmark]: TraceAbstraction took 509966.18 ms. Allocated memory was 152.0 MB in the beginning and 1.1 GB in the end (delta: 982.5 MB). Free memory was 122.3 MB in the beginning and 450.8 MB in the end (delta: -328.5 MB). Peak memory consumption was 655.6 MB. Max. memory is 8.0 GB. [2021-10-13 19:44:11,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.59 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 116.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.83 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 112.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1116.46 ms. Allocated memory is still 152.0 MB. Free memory was 112.8 MB in the beginning and 122.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 509966.18 ms. Allocated memory was 152.0 MB in the beginning and 1.1 GB in the end (delta: 982.5 MB). Free memory was 122.3 MB in the beginning and 450.8 MB in the end (delta: -328.5 MB). Peak memory consumption was 655.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7305.7ms, 144 PlacesBefore, 35 PlacesAfterwards, 148 TransitionsBefore, 31 TransitionsAfterwards, 1350 CoEnabledTransitionPairs, 7 FixpointIterations, 88 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 5 ConcurrentYvCompositions, 8 ChoiceCompositions, 162 TotalNumberOfCompositions, 1962 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1685, positive: 1658, positive conditional: 0, positive unconditional: 1658, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 848, positive: 836, positive conditional: 0, positive unconditional: 836, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 848, positive: 831, positive conditional: 0, positive unconditional: 831, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1685, positive: 822, positive conditional: 0, positive unconditional: 822, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 848, unknown conditional: 0, unknown unconditional: 848] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 509758.4ms, OverallIterations: 137, TraceHistogramMax: 5, EmptinessCheckTime: 116.2ms, AutomataDifference: 161206.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7393.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2273 SDtfs, 9703 SDslu, 18566 SDs, 0 SdLazy, 57057 SolverSat, 4733 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52292.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4596 GetRequests, 566 SyntacticMatches, 8 SemanticMatches, 4022 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26192 ImplicationChecksByTransitivity, 166283.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=134, InterpolantAutomatonStates: 2558, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 828.6ms AutomataMinimizationTime, 136 MinimizatonAttempts, 10587 StatesRemovedByMinimization, 126 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1342.1ms SsaConstructionTime, 7307.8ms SatisfiabilityAnalysisTime, 146400.9ms InterpolantComputationTime, 3767 NumberOfCodeBlocks, 3733 NumberOfCodeBlocksAsserted, 390 NumberOfCheckSat, 3501 ConstructedInterpolants, 188 QuantifiedInterpolants, 99050 SizeOfPredicates, 1937 NumberOfNonLiveVariables, 25632 ConjunctsInSsa, 5385 ConjunctsInUnsatCore, 266 InterpolantComputations, 19 PerfectInterpolantSequences, 230/2509 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown