/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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:41:20,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:41:20,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:41:20,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 19:41:20,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 19:41:20,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 19:41:20,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 19:41:20,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 19:41:20,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 19:41:20,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 19:41:20,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 19:41:20,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 19:41:20,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:41:20,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:41:20,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:41:20,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:41:20,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:41:20,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:41:20,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:41:20,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:41:20,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:41:20,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:41:20,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:41:20,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:41:20,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:41:20,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:41:20,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:41:20,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:41:20,243 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 19:41:20,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:41:20,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:41:20,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:41:20,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:41:20,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:41:20,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:41:20,300 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:41:20,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:41:20,301 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:41:20,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:41:20,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:41:20,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:41:20,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:41:20,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:41:20,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:41:20,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:41:20,303 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:41:20,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:41:20,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:41:20,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:41:20,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:41:20,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:41:20,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:41:20,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:41:20,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:41:20,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:41:20,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:41:20,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:41:20,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:41:20,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:41:20,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:41:20,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:41:20,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:41:20,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:41:20,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:41:20,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:41:20,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:41:20,812 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:41:20,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-13 19:41:20,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41cfbaa9/ffb282c2fdb1456a88835728111bcc50/FLAGff3cf04bb [2021-10-13 19:41:21,496 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:41:21,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-13 19:41:21,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41cfbaa9/ffb282c2fdb1456a88835728111bcc50/FLAGff3cf04bb [2021-10-13 19:41:21,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41cfbaa9/ffb282c2fdb1456a88835728111bcc50 [2021-10-13 19:41:21,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:41:21,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:41:21,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:41:21,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:41:21,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:41:21,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:21" (1/1) ... [2021-10-13 19:41:21,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c68c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:21, skipping insertion in model container [2021-10-13 19:41:21,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:21" (1/1) ... [2021-10-13 19:41:21,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:41:21,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:41:22,165 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2021-10-13 19:41:22,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:41:22,190 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:41:22,249 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2021-10-13 19:41:22,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:41:22,273 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:41:22,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22 WrapperNode [2021-10-13 19:41:22,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:41:22,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:41:22,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:41:22,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:41:22,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:41:22,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:41:22,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:41:22,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:41:22,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:41:22,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:41:22,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:41:22,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:41:22,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (1/1) ... [2021-10-13 19:41:22,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:41:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:22,414 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 19:41:22,436 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 19:41:22,486 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:41:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:41:22,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:41:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:41:22,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 19:41:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 19:41:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 19:41:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 19:41:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:41:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:41:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:41:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 19:41:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 19:41:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:41:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:41:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:41:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:41:22,493 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 19:41:23,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:41:23,398 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 19:41:23,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:23 BoogieIcfgContainer [2021-10-13 19:41:23,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:41:23,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:41:23,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:41:23,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:41:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:21" (1/3) ... [2021-10-13 19:41:23,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee04e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:23, skipping insertion in model container [2021-10-13 19:41:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:22" (2/3) ... [2021-10-13 19:41:23,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee04e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:23, skipping insertion in model container [2021-10-13 19:41:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:23" (3/3) ... [2021-10-13 19:41:23,414 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2021-10-13 19:41:23,420 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:41:23,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:41:23,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 19:41:23,420 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:41:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,473 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,476 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,476 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,476 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,483 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,483 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,484 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,485 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,486 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,487 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,487 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,487 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,487 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,488 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,488 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,488 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,488 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,488 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,489 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,489 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,489 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,489 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,489 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,490 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,490 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,490 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,490 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,497 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,498 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,498 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,498 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,502 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,502 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,502 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,502 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,503 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,503 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:41:23,512 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 19:41:23,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:41:23,576 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 19:41:23,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-13 19:41:23,595 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:41:23,607 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-13 19:41:23,611 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 138 transitions, 308 flow [2021-10-13 19:41:23,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 138 transitions, 308 flow [2021-10-13 19:41:23,676 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-10-13 19:41:23,676 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 19:41:23,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 10/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-13 19:41:23,688 INFO L116 LiptonReduction]: Number of co-enabled transitions 2520 [2021-10-13 19:41:30,457 INFO L131 LiptonReduction]: Checked pairs total: 3550 [2021-10-13 19:41:30,457 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-13 19:41:30,469 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2021-10-13 19:41:30,662 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:41:30,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:30,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:41:30,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash 639337, now seen corresponding path program 1 times [2021-10-13 19:41:30,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:30,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411748428] [2021-10-13 19:41:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:30,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:30,901 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 19:41:30,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:30,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411748428] [2021-10-13 19:41:30,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411748428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:30,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:30,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:30,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845717017] [2021-10-13 19:41:30,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:30,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:30,943 INFO L87 Difference]: Start difference. First operand has 3618 states, 2994 states have (on average 5.202070808283233) internal successors, (15575), 3617 states have internal predecessors, (15575), 0 states have call successors, (0), 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 1.5) 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 19:41:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:31,166 INFO L93 Difference]: Finished difference Result 4446 states and 18988 transitions. [2021-10-13 19:41:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:31,168 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 3 [2021-10-13 19:41:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:31,269 INFO L225 Difference]: With dead ends: 4446 [2021-10-13 19:41:31,270 INFO L226 Difference]: Without dead ends: 4446 [2021-10-13 19:41:31,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-10-13 19:41:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2968. [2021-10-13 19:41:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2569 states have (on average 5.393927598287271) internal successors, (13857), 2967 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 13857 transitions. [2021-10-13 19:41:31,557 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 13857 transitions. Word has length 3 [2021-10-13 19:41:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:31,558 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 13857 transitions. [2021-10-13 19:41:31,558 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 19:41:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 13857 transitions. [2021-10-13 19:41:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:41:31,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:31,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:41:31,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:41:31,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash 639340, now seen corresponding path program 1 times [2021-10-13 19:41:31,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:31,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186764981] [2021-10-13 19:41:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:31,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:31,604 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 19:41:31,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:31,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186764981] [2021-10-13 19:41:31,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186764981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:31,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:31,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243815171] [2021-10-13 19:41:31,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:31,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:31,608 INFO L87 Difference]: Start difference. First operand 2968 states and 13857 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 19:41:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:31,767 INFO L93 Difference]: Finished difference Result 3036 states and 14102 transitions. [2021-10-13 19:41:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:31,768 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 3 [2021-10-13 19:41:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:31,805 INFO L225 Difference]: With dead ends: 3036 [2021-10-13 19:41:31,806 INFO L226 Difference]: Without dead ends: 3016 [2021-10-13 19:41:31,806 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 19:41:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-10-13 19:41:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-10-13 19:41:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2617 states have (on average 5.367596484524264) internal successors, (14047), 3015 states have internal predecessors, (14047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 14047 transitions. [2021-10-13 19:41:31,961 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 14047 transitions. Word has length 3 [2021-10-13 19:41:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:31,961 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 14047 transitions. [2021-10-13 19:41:31,962 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 19:41:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 14047 transitions. [2021-10-13 19:41:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:41:31,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:31,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:41:31,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 19:41:31,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:31,964 INFO L82 PathProgramCache]: Analyzing trace with hash 19819998, now seen corresponding path program 1 times [2021-10-13 19:41:31,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:31,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22161283] [2021-10-13 19:41:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:31,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:32,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:32,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22161283] [2021-10-13 19:41:32,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22161283] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:32,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:32,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:41:32,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917877012] [2021-10-13 19:41:32,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:32,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:32,113 INFO L87 Difference]: Start difference. First operand 3016 states and 14047 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:32,172 INFO L93 Difference]: Finished difference Result 2644 states and 12423 transitions. [2021-10-13 19:41:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:41:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:32,207 INFO L225 Difference]: With dead ends: 2644 [2021-10-13 19:41:32,207 INFO L226 Difference]: Without dead ends: 2644 [2021-10-13 19:41:32,208 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 19:41:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-10-13 19:41:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2644. [2021-10-13 19:41:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2325 states have (on average 5.3432258064516125) internal successors, (12423), 2643 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 12423 transitions. [2021-10-13 19:41:32,343 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 12423 transitions. Word has length 4 [2021-10-13 19:41:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:32,344 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 12423 transitions. [2021-10-13 19:41:32,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:32,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 12423 transitions. [2021-10-13 19:41:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:41:32,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:32,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:41:32,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 19:41:32,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:32,347 INFO L82 PathProgramCache]: Analyzing trace with hash 19820000, now seen corresponding path program 1 times [2021-10-13 19:41:32,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:32,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358036896] [2021-10-13 19:41:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:32,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:32,393 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 19:41:32,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:32,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358036896] [2021-10-13 19:41:32,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358036896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:32,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144926342] [2021-10-13 19:41:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:32,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:32,403 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 19:41:32,413 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 19:41:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:32,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:32,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:32,613 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 19:41:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144926342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:32,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:32,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:41:32,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537864503] [2021-10-13 19:41:32,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:41:32,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:41:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:32,616 INFO L87 Difference]: Start difference. First operand 2644 states and 12423 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 19:41:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:32,778 INFO L93 Difference]: Finished difference Result 5936 states and 25357 transitions. [2021-10-13 19:41:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:32,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 4 [2021-10-13 19:41:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:32,857 INFO L225 Difference]: With dead ends: 5936 [2021-10-13 19:41:32,857 INFO L226 Difference]: Without dead ends: 5936 [2021-10-13 19:41:32,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-10-13 19:41:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 3016. [2021-10-13 19:41:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2697 states have (on average 5.621431219873934) internal successors, (15161), 3015 states have internal predecessors, (15161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 15161 transitions. [2021-10-13 19:41:33,144 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 15161 transitions. Word has length 4 [2021-10-13 19:41:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:33,145 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 15161 transitions. [2021-10-13 19:41:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 19:41:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 15161 transitions. [2021-10-13 19:41:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:41:33,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:33,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:41:33,189 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 19:41:33,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:33,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash 19820001, now seen corresponding path program 1 times [2021-10-13 19:41:33,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:33,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887989350] [2021-10-13 19:41:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:33,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:33,437 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 19:41:33,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:33,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887989350] [2021-10-13 19:41:33,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887989350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:33,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966736821] [2021-10-13 19:41:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:33,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:33,445 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 19:41:33,465 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 19:41:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:33,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:33,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:33,535 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 19:41:33,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966736821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:33,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:33,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:41:33,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365021408] [2021-10-13 19:41:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:41:33,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:41:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:33,546 INFO L87 Difference]: Start difference. First operand 3016 states and 15161 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 19:41:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:33,745 INFO L93 Difference]: Finished difference Result 6634 states and 27180 transitions. [2021-10-13 19:41:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:41:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 4 [2021-10-13 19:41:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:33,793 INFO L225 Difference]: With dead ends: 6634 [2021-10-13 19:41:33,793 INFO L226 Difference]: Without dead ends: 6614 [2021-10-13 19:41:33,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:33,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-10-13 19:41:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 5404. [2021-10-13 19:41:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5085 states have (on average 5.107767944936087) internal successors, (25973), 5403 states have internal predecessors, (25973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 25973 transitions. [2021-10-13 19:41:34,253 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 25973 transitions. Word has length 4 [2021-10-13 19:41:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:34,253 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 25973 transitions. [2021-10-13 19:41:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 19:41:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 25973 transitions. [2021-10-13 19:41:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:41:34,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:34,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 19:41:34,300 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 19:41:34,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:34,471 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:34,472 INFO L82 PathProgramCache]: Analyzing trace with hash 19820002, now seen corresponding path program 1 times [2021-10-13 19:41:34,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:34,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280335587] [2021-10-13 19:41:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:34,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:34,504 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 19:41:34,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:34,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280335587] [2021-10-13 19:41:34,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280335587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:34,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772328674] [2021-10-13 19:41:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:34,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:34,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:34,507 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 19:41:34,525 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 19:41:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:34,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:34,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:34,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772328674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:34,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:34,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-13 19:41:34,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398043131] [2021-10-13 19:41:34,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:41:34,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:41:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:34,583 INFO L87 Difference]: Start difference. First operand 5404 states and 25973 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:34,714 INFO L93 Difference]: Finished difference Result 5772 states and 27809 transitions. [2021-10-13 19:41:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:41:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:34,759 INFO L225 Difference]: With dead ends: 5772 [2021-10-13 19:41:34,760 INFO L226 Difference]: Without dead ends: 5772 [2021-10-13 19:41:34,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2021-10-13 19:41:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 3768. [2021-10-13 19:41:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3577 states have (on average 4.98909700866648) internal successors, (17846), 3767 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 17846 transitions. [2021-10-13 19:41:35,016 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 17846 transitions. Word has length 4 [2021-10-13 19:41:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:35,016 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 17846 transitions. [2021-10-13 19:41:35,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 17846 transitions. [2021-10-13 19:41:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:41:35,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:35,017 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-13 19:41:35,053 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 19:41:35,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:35,232 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:35,232 INFO L82 PathProgramCache]: Analyzing trace with hash 614420491, now seen corresponding path program 2 times [2021-10-13 19:41:35,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:35,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341536696] [2021-10-13 19:41:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:35,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:35,288 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 19:41:35,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:35,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341536696] [2021-10-13 19:41:35,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341536696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:35,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166397409] [2021-10-13 19:41:35,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:35,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:35,291 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 19:41:35,299 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 19:41:35,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:41:35,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:35,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:41:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:35,402 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 19:41:35,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166397409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:35,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:35,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:41:35,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744959781] [2021-10-13 19:41:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:35,404 INFO L87 Difference]: Start difference. First operand 3768 states and 17846 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:35,532 INFO L93 Difference]: Finished difference Result 3228 states and 15307 transitions. [2021-10-13 19:41:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:41:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:35,599 INFO L225 Difference]: With dead ends: 3228 [2021-10-13 19:41:35,599 INFO L226 Difference]: Without dead ends: 3228 [2021-10-13 19:41:35,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-13 19:41:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 1972. [2021-10-13 19:41:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1845 states have (on average 4.555555555555555) internal successors, (8405), 1971 states have internal predecessors, (8405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 8405 transitions. [2021-10-13 19:41:35,787 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 8405 transitions. Word has length 5 [2021-10-13 19:41:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:35,788 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 8405 transitions. [2021-10-13 19:41:35,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 8405 transitions. [2021-10-13 19:41:35,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:41:35,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:35,793 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-13 19:41:35,829 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 19:41:36,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:36,007 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:36,008 INFO L82 PathProgramCache]: Analyzing trace with hash 614420492, now seen corresponding path program 2 times [2021-10-13 19:41:36,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:36,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270358405] [2021-10-13 19:41:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:36,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:36,048 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 19:41:36,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:36,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270358405] [2021-10-13 19:41:36,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270358405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:36,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796256038] [2021-10-13 19:41:36,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:36,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:36,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:36,050 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 19:41:36,067 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 19:41:36,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:41:36,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:36,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:41:36,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:36,166 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 19:41:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796256038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:36,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:36,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-13 19:41:36,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349767521] [2021-10-13 19:41:36,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:41:36,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:41:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:36,169 INFO L87 Difference]: Start difference. First operand 1972 states and 8405 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 19:41:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:36,298 INFO L93 Difference]: Finished difference Result 3464 states and 13906 transitions. [2021-10-13 19:41:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:41:36,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 5 [2021-10-13 19:41:36,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:36,323 INFO L225 Difference]: With dead ends: 3464 [2021-10-13 19:41:36,323 INFO L226 Difference]: Without dead ends: 3444 [2021-10-13 19:41:36,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-10-13 19:41:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2348. [2021-10-13 19:41:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2221 states have (on average 4.668167492120666) internal successors, (10368), 2347 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 10368 transitions. [2021-10-13 19:41:36,452 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 10368 transitions. Word has length 5 [2021-10-13 19:41:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:36,452 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 10368 transitions. [2021-10-13 19:41:36,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 19:41:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 10368 transitions. [2021-10-13 19:41:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:41:36,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:36,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 19:41:36,488 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 19:41:36,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:36,668 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:36,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:36,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1869484483, now seen corresponding path program 1 times [2021-10-13 19:41:36,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:36,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111126754] [2021-10-13 19:41:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:36,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:36,743 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 19:41:36,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:36,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111126754] [2021-10-13 19:41:36,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111126754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:36,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:36,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:36,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334203598] [2021-10-13 19:41:36,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:36,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:36,745 INFO L87 Difference]: Start difference. First operand 2348 states and 10368 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 19:41:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:36,831 INFO L93 Difference]: Finished difference Result 3708 states and 16218 transitions. [2021-10-13 19:41:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:36,832 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 19:41:36,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:36,854 INFO L225 Difference]: With dead ends: 3708 [2021-10-13 19:41:36,854 INFO L226 Difference]: Without dead ends: 3704 [2021-10-13 19:41:36,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 19:41:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-10-13 19:41:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 2870. [2021-10-13 19:41:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2743 states have (on average 4.852351440029165) internal successors, (13310), 2869 states have internal predecessors, (13310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 13310 transitions. [2021-10-13 19:41:36,964 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 13310 transitions. Word has length 6 [2021-10-13 19:41:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:36,964 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 13310 transitions. [2021-10-13 19:41:36,964 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 19:41:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 13310 transitions. [2021-10-13 19:41:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:41:36,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:36,965 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-13 19:41:36,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 19:41:36,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1867166529, now seen corresponding path program 3 times [2021-10-13 19:41:36,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:36,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307341652] [2021-10-13 19:41:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:36,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:37,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:37,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307341652] [2021-10-13 19:41:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307341652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:37,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019108458] [2021-10-13 19:41:37,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:41:37,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:37,004 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 19:41:37,010 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 19:41:37,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:41:37,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:37,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:41:37,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019108458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:37,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:37,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 19:41:37,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071805730] [2021-10-13 19:41:37,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:41:37,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:41:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:41:37,100 INFO L87 Difference]: Start difference. First operand 2870 states and 13310 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:37,273 INFO L93 Difference]: Finished difference Result 5262 states and 22824 transitions. [2021-10-13 19:41:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:41:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 19:41:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:37,312 INFO L225 Difference]: With dead ends: 5262 [2021-10-13 19:41:37,313 INFO L226 Difference]: Without dead ends: 5230 [2021-10-13 19:41:37,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:41:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2021-10-13 19:41:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 3362. [2021-10-13 19:41:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3235 states have (on average 4.907882534775888) internal successors, (15877), 3361 states have internal predecessors, (15877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 15877 transitions. [2021-10-13 19:41:37,524 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 15877 transitions. Word has length 6 [2021-10-13 19:41:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 3362 states and 15877 transitions. [2021-10-13 19:41:37,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 15877 transitions. [2021-10-13 19:41:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:41:37,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:37,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:37,562 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 19:41:37,739 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,SelfDestructingSolverStorable9 [2021-10-13 19:41:37,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510105, now seen corresponding path program 1 times [2021-10-13 19:41:37,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:37,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20444161] [2021-10-13 19:41:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:37,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:37,766 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 19:41:37,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:37,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20444161] [2021-10-13 19:41:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20444161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:37,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:37,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463314923] [2021-10-13 19:41:37,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:37,769 INFO L87 Difference]: Start difference. First operand 3362 states and 15877 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 19:41:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:37,808 INFO L93 Difference]: Finished difference Result 2672 states and 12337 transitions. [2021-10-13 19:41:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:37,809 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 7 [2021-10-13 19:41:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:37,828 INFO L225 Difference]: With dead ends: 2672 [2021-10-13 19:41:37,828 INFO L226 Difference]: Without dead ends: 2672 [2021-10-13 19:41:37,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-10-13 19:41:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2021-10-13 19:41:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2577 states have (on average 4.787349631354288) internal successors, (12337), 2671 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 12337 transitions. [2021-10-13 19:41:37,925 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 12337 transitions. Word has length 7 [2021-10-13 19:41:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:37,925 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 12337 transitions. [2021-10-13 19:41:37,925 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 19:41:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 12337 transitions. [2021-10-13 19:41:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:41:37,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:37,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:37,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 19:41:37,927 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2119510107, now seen corresponding path program 1 times [2021-10-13 19:41:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:37,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268346994] [2021-10-13 19:41:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:37,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:37,947 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 19:41:37,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:37,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268346994] [2021-10-13 19:41:37,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268346994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:37,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:37,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:37,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389969521] [2021-10-13 19:41:37,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:37,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:37,949 INFO L87 Difference]: Start difference. First operand 2672 states and 12337 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 19:41:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:38,011 INFO L93 Difference]: Finished difference Result 4504 states and 20684 transitions. [2021-10-13 19:41:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:38,012 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 7 [2021-10-13 19:41:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:38,045 INFO L225 Difference]: With dead ends: 4504 [2021-10-13 19:41:38,045 INFO L226 Difference]: Without dead ends: 4504 [2021-10-13 19:41:38,045 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 19:41:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2021-10-13 19:41:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3542. [2021-10-13 19:41:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3447 states have (on average 4.965767333913548) internal successors, (17117), 3541 states have internal predecessors, (17117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 17117 transitions. [2021-10-13 19:41:38,240 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 17117 transitions. Word has length 7 [2021-10-13 19:41:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:38,240 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 17117 transitions. [2021-10-13 19:41:38,241 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 19:41:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 17117 transitions. [2021-10-13 19:41:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:41:38,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:38,242 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2021-10-13 19:41:38,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 19:41:38,242 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2047588012, now seen corresponding path program 4 times [2021-10-13 19:41:38,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:38,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888329292] [2021-10-13 19:41:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:38,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:38,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:38,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888329292] [2021-10-13 19:41:38,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888329292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:38,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575090722] [2021-10-13 19:41:38,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:38,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:38,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:38,284 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 19:41:38,302 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 19:41:38,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:38,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:41:38,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:38,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575090722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:38,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:38,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 19:41:38,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741654584] [2021-10-13 19:41:38,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:41:38,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:41:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:41:38,373 INFO L87 Difference]: Start difference. First operand 3542 states and 17117 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 19:41:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:38,567 INFO L93 Difference]: Finished difference Result 6526 states and 29886 transitions. [2021-10-13 19:41:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:41:38,568 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 7 [2021-10-13 19:41:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:38,612 INFO L225 Difference]: With dead ends: 6526 [2021-10-13 19:41:38,612 INFO L226 Difference]: Without dead ends: 6494 [2021-10-13 19:41:38,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:41:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-10-13 19:41:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 4076. [2021-10-13 19:41:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 3981 states have (on average 4.988445114292891) internal successors, (19859), 4075 states have internal predecessors, (19859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 19859 transitions. [2021-10-13 19:41:38,826 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 19859 transitions. Word has length 7 [2021-10-13 19:41:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:38,827 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 19859 transitions. [2021-10-13 19:41:38,827 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 19:41:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 19859 transitions. [2021-10-13 19:41:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:41:38,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:38,828 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:38,867 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 19:41:39,041 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 19:41:39,041 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277053, now seen corresponding path program 1 times [2021-10-13 19:41:39,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:39,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333552033] [2021-10-13 19:41:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:39,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:39,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:39,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333552033] [2021-10-13 19:41:39,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333552033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:39,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:39,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:41:39,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088653887] [2021-10-13 19:41:39,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:39,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:39,066 INFO L87 Difference]: Start difference. First operand 4076 states and 19859 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 19:41:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:39,118 INFO L93 Difference]: Finished difference Result 3380 states and 16432 transitions. [2021-10-13 19:41:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 19:41:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:39,138 INFO L225 Difference]: With dead ends: 3380 [2021-10-13 19:41:39,138 INFO L226 Difference]: Without dead ends: 3380 [2021-10-13 19:41:39,138 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 19:41:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2021-10-13 19:41:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3380. [2021-10-13 19:41:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3309 states have (on average 4.965850710184346) internal successors, (16432), 3379 states have internal predecessors, (16432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 16432 transitions. [2021-10-13 19:41:39,353 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 16432 transitions. Word has length 8 [2021-10-13 19:41:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:39,354 INFO L470 AbstractCegarLoop]: Abstraction has 3380 states and 16432 transitions. [2021-10-13 19:41:39,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 19:41:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 16432 transitions. [2021-10-13 19:41:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:41:39,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:39,355 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:39,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 19:41:39,356 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1278277054, now seen corresponding path program 1 times [2021-10-13 19:41:39,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:39,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584892411] [2021-10-13 19:41:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:39,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:39,391 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 19:41:39,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:39,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584892411] [2021-10-13 19:41:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584892411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:39,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647627149] [2021-10-13 19:41:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:39,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:39,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:39,394 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 19:41:39,413 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 19:41:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:39,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:39,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:39,491 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 19:41:39,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647627149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:39,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:39,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:41:39,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752130487] [2021-10-13 19:41:39,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:41:39,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:39,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:41:39,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:39,493 INFO L87 Difference]: Start difference. First operand 3380 states and 16432 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:41:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:39,588 INFO L93 Difference]: Finished difference Result 6358 states and 29091 transitions. [2021-10-13 19:41:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 8 [2021-10-13 19:41:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:39,627 INFO L225 Difference]: With dead ends: 6358 [2021-10-13 19:41:39,627 INFO L226 Difference]: Without dead ends: 6350 [2021-10-13 19:41:39,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-10-13 19:41:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 4120. [2021-10-13 19:41:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 4049 states have (on average 5.117806865892813) internal successors, (20722), 4119 states have internal predecessors, (20722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 20722 transitions. [2021-10-13 19:41:39,866 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 20722 transitions. Word has length 8 [2021-10-13 19:41:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:39,867 INFO L470 AbstractCegarLoop]: Abstraction has 4120 states and 20722 transitions. [2021-10-13 19:41:39,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:41:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 20722 transitions. [2021-10-13 19:41:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:41:39,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:39,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:39,905 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 19:41:40,081 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,SelfDestructingSolverStorable14 [2021-10-13 19:41:40,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1280304387, now seen corresponding path program 1 times [2021-10-13 19:41:40,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:40,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346905157] [2021-10-13 19:41:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:40,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:40,110 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 19:41:40,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:40,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346905157] [2021-10-13 19:41:40,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346905157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:40,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131075038] [2021-10-13 19:41:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:40,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:40,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:40,112 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 19:41:40,131 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 19:41:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:40,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:40,207 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 19:41:40,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131075038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:40,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:40,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-13 19:41:40,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531524780] [2021-10-13 19:41:40,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:41:40,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:41:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:41:40,209 INFO L87 Difference]: Start difference. First operand 4120 states and 20722 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 19:41:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:40,318 INFO L93 Difference]: Finished difference Result 7302 states and 34952 transitions. [2021-10-13 19:41:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 19:41:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:40,368 INFO L225 Difference]: With dead ends: 7302 [2021-10-13 19:41:40,368 INFO L226 Difference]: Without dead ends: 7302 [2021-10-13 19:41:40,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:41:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2021-10-13 19:41:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 5126. [2021-10-13 19:41:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5055 states have (on average 5.232047477744807) internal successors, (26448), 5125 states have internal predecessors, (26448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 26448 transitions. [2021-10-13 19:41:40,644 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 26448 transitions. Word has length 8 [2021-10-13 19:41:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:40,644 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 26448 transitions. [2021-10-13 19:41:40,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 19:41:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 26448 transitions. [2021-10-13 19:41:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:41:40,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:40,646 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-13 19:41:40,683 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 19:41:40,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:40,861 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash -949280607, now seen corresponding path program 5 times [2021-10-13 19:41:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:40,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498381972] [2021-10-13 19:41:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:40,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:40,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:40,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498381972] [2021-10-13 19:41:40,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498381972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:40,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716430153] [2021-10-13 19:41:40,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:40,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:40,916 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 19:41:40,923 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 19:41:40,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:41:40,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:40,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:41:40,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:41,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716430153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:41,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:41,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 19:41:41,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176107729] [2021-10-13 19:41:41,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:41:41,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:41:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:41:41,026 INFO L87 Difference]: Start difference. First operand 5126 states and 26448 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 19:41:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:41,301 INFO L93 Difference]: Finished difference Result 9474 states and 46724 transitions. [2021-10-13 19:41:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:41:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 8 [2021-10-13 19:41:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:41,372 INFO L225 Difference]: With dead ends: 9474 [2021-10-13 19:41:41,372 INFO L226 Difference]: Without dead ends: 9426 [2021-10-13 19:41:41,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:41:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2021-10-13 19:41:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 5832. [2021-10-13 19:41:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5761 states have (on average 5.232077764277035) internal successors, (30142), 5831 states have internal predecessors, (30142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 30142 transitions. [2021-10-13 19:41:41,692 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 30142 transitions. Word has length 8 [2021-10-13 19:41:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:41,693 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 30142 transitions. [2021-10-13 19:41:41,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 19:41:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 30142 transitions. [2021-10-13 19:41:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:41:41,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:41,694 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:41,730 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 19:41:41,909 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,SelfDestructingSolverStorable16 [2021-10-13 19:41:41,910 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1034730843, now seen corresponding path program 2 times [2021-10-13 19:41:41,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:41,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531435807] [2021-10-13 19:41:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:41,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:41,941 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 19:41:41,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:41,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531435807] [2021-10-13 19:41:41,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531435807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:41,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986770303] [2021-10-13 19:41:41,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:41,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:41,944 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 19:41:41,965 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 19:41:42,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:41:42,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:42,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:42,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:42,039 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 19:41:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986770303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:42,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:42,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:41:42,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719399691] [2021-10-13 19:41:42,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:42,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:42,041 INFO L87 Difference]: Start difference. First operand 5832 states and 30142 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 19:41:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:42,158 INFO L93 Difference]: Finished difference Result 4906 states and 25214 transitions. [2021-10-13 19:41:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:42,158 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 9 [2021-10-13 19:41:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:42,180 INFO L225 Difference]: With dead ends: 4906 [2021-10-13 19:41:42,181 INFO L226 Difference]: Without dead ends: 4906 [2021-10-13 19:41:42,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2021-10-13 19:41:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 2574. [2021-10-13 19:41:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2527 states have (on average 4.747130985358132) internal successors, (11996), 2573 states have internal predecessors, (11996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 11996 transitions. [2021-10-13 19:41:42,290 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 11996 transitions. Word has length 9 [2021-10-13 19:41:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:42,291 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 11996 transitions. [2021-10-13 19:41:42,291 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 19:41:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 11996 transitions. [2021-10-13 19:41:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:41:42,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:42,292 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2021-10-13 19:41:42,328 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 19:41:42,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:41:42,506 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash 637072716, now seen corresponding path program 6 times [2021-10-13 19:41:42,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:42,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583935443] [2021-10-13 19:41:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:42,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:42,561 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 19:41:42,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:42,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583935443] [2021-10-13 19:41:42,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583935443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:42,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869407214] [2021-10-13 19:41:42,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:42,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:42,563 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 19:41:42,586 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 19:41:42,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:41:42,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:42,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:41:42,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:42,685 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 19:41:42,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869407214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:42,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:42,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-13 19:41:42,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308531448] [2021-10-13 19:41:42,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:41:42,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:41:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:41:42,687 INFO L87 Difference]: Start difference. First operand 2574 states and 11996 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:42,866 INFO L93 Difference]: Finished difference Result 4658 states and 20837 transitions. [2021-10-13 19:41:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:41:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 19:41:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:42,889 INFO L225 Difference]: With dead ends: 4658 [2021-10-13 19:41:42,889 INFO L226 Difference]: Without dead ends: 4610 [2021-10-13 19:41:42,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:41:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-10-13 19:41:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 2866. [2021-10-13 19:41:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2819 states have (on average 4.749911316069528) internal successors, (13390), 2865 states have internal predecessors, (13390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 13390 transitions. [2021-10-13 19:41:43,004 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 13390 transitions. Word has length 9 [2021-10-13 19:41:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:43,005 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 13390 transitions. [2021-10-13 19:41:43,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 13390 transitions. [2021-10-13 19:41:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:41:43,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:43,006 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-13 19:41:43,032 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 19:41:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:43,217 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash 63619896, now seen corresponding path program 2 times [2021-10-13 19:41:43,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:43,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686338734] [2021-10-13 19:41:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:43,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:43,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:43,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686338734] [2021-10-13 19:41:43,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686338734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:43,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346352364] [2021-10-13 19:41:43,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:43,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:43,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:43,255 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 19:41:43,265 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 19:41:43,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:41:43,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:43,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:41:43,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:43,384 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 19:41:43,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346352364] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:43,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:43,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:41:43,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005538234] [2021-10-13 19:41:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:43,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:43,386 INFO L87 Difference]: Start difference. First operand 2866 states and 13390 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 19:41:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:43,413 INFO L93 Difference]: Finished difference Result 2386 states and 11170 transitions. [2021-10-13 19:41:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:43,413 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 10 [2021-10-13 19:41:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:43,424 INFO L225 Difference]: With dead ends: 2386 [2021-10-13 19:41:43,424 INFO L226 Difference]: Without dead ends: 2326 [2021-10-13 19:41:43,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-10-13 19:41:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 1296. [2021-10-13 19:41:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1265 states have (on average 4.238735177865613) internal successors, (5362), 1295 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5362 transitions. [2021-10-13 19:41:43,474 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5362 transitions. Word has length 10 [2021-10-13 19:41:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:43,475 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5362 transitions. [2021-10-13 19:41:43,475 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 19:41:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5362 transitions. [2021-10-13 19:41:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:41:43,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:43,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:43,514 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 19:41:43,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-13 19:41:43,690 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:43,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:43,691 INFO L82 PathProgramCache]: Analyzing trace with hash 103258246, now seen corresponding path program 1 times [2021-10-13 19:41:43,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:43,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132298276] [2021-10-13 19:41:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:43,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:43,713 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 19:41:43,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:43,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132298276] [2021-10-13 19:41:43,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132298276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:43,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:41:43,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:41:43,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261007955] [2021-10-13 19:41:43,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:43,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:43,715 INFO L87 Difference]: Start difference. First operand 1296 states and 5362 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 19:41:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:43,741 INFO L93 Difference]: Finished difference Result 1852 states and 7624 transitions. [2021-10-13 19:41:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 19:41:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:43,749 INFO L225 Difference]: With dead ends: 1852 [2021-10-13 19:41:43,749 INFO L226 Difference]: Without dead ends: 1836 [2021-10-13 19:41:43,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:41:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-10-13 19:41:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1558. [2021-10-13 19:41:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1527 states have (on average 4.376555337262606) internal successors, (6683), 1557 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6683 transitions. [2021-10-13 19:41:43,797 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6683 transitions. Word has length 10 [2021-10-13 19:41:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:43,797 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 6683 transitions. [2021-10-13 19:41:43,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 19:41:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6683 transitions. [2021-10-13 19:41:43,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:41:43,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:43,799 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2021-10-13 19:41:43,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 19:41:43,799 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1725581823, now seen corresponding path program 7 times [2021-10-13 19:41:43,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:43,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560104356] [2021-10-13 19:41:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:43,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:43,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:43,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560104356] [2021-10-13 19:41:43,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560104356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:43,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446294924] [2021-10-13 19:41:43,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:41:43,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:43,861 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 19:41:43,867 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 19:41:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:43,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:41:43,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:43,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446294924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:43,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:43,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 19:41:43,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402033194] [2021-10-13 19:41:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:41:43,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:41:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:41:43,970 INFO L87 Difference]: Start difference. First operand 1558 states and 6683 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:44,113 INFO L93 Difference]: Finished difference Result 2890 states and 11963 transitions. [2021-10-13 19:41:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:41:44,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 19:41:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:44,127 INFO L225 Difference]: With dead ends: 2890 [2021-10-13 19:41:44,127 INFO L226 Difference]: Without dead ends: 2814 [2021-10-13 19:41:44,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:41:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-10-13 19:41:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1708. [2021-10-13 19:41:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1677 states have (on average 4.376267143709004) internal successors, (7339), 1707 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 7339 transitions. [2021-10-13 19:41:44,189 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 7339 transitions. Word has length 10 [2021-10-13 19:41:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:44,190 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 7339 transitions. [2021-10-13 19:41:44,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 7339 transitions. [2021-10-13 19:41:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:41:44,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:44,191 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-13 19:41:44,230 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 19:41:44,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:44,406 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1953428500, now seen corresponding path program 8 times [2021-10-13 19:41:44,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:44,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86796893] [2021-10-13 19:41:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:44,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:44,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:44,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86796893] [2021-10-13 19:41:44,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86796893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:44,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783735395] [2021-10-13 19:41:44,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:44,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:44,478 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 19:41:44,498 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 19:41:44,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:41:44,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:41:44,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:44,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783735395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:44,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:44,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 19:41:44,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950547483] [2021-10-13 19:41:44,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:41:44,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:41:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:41:44,612 INFO L87 Difference]: Start difference. First operand 1708 states and 7339 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 19:41:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:44,770 INFO L93 Difference]: Finished difference Result 3206 states and 13302 transitions. [2021-10-13 19:41:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:41:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 11 [2021-10-13 19:41:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:44,785 INFO L225 Difference]: With dead ends: 3206 [2021-10-13 19:41:44,785 INFO L226 Difference]: Without dead ends: 3126 [2021-10-13 19:41:44,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:41:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-13 19:41:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1858. [2021-10-13 19:41:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1827 states have (on average 4.376026272577997) internal successors, (7995), 1857 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7995 transitions. [2021-10-13 19:41:44,852 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7995 transitions. Word has length 11 [2021-10-13 19:41:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:44,853 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 7995 transitions. [2021-10-13 19:41:44,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 19:41:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7995 transitions. [2021-10-13 19:41:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:41:44,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:44,855 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:44,891 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 19:41:45,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:45,070 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821881, now seen corresponding path program 1 times [2021-10-13 19:41:45,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:45,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081505128] [2021-10-13 19:41:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:45,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:45,100 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 19:41:45,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:45,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081505128] [2021-10-13 19:41:45,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081505128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:45,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757158540] [2021-10-13 19:41:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:45,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:45,102 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 19:41:45,127 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 19:41:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:45,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:45,228 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 19:41:45,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757158540] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:45,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:45,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-13 19:41:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719291628] [2021-10-13 19:41:45,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:41:45,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:41:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:45,230 INFO L87 Difference]: Start difference. First operand 1858 states and 7995 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 19:41:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:45,258 INFO L93 Difference]: Finished difference Result 1894 states and 7692 transitions. [2021-10-13 19:41:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:45,258 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 12 [2021-10-13 19:41:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:45,266 INFO L225 Difference]: With dead ends: 1894 [2021-10-13 19:41:45,268 INFO L226 Difference]: Without dead ends: 1894 [2021-10-13 19:41:45,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-10-13 19:41:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1580. [2021-10-13 19:41:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1557 states have (on average 4.292228644829801) internal successors, (6683), 1579 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 6683 transitions. [2021-10-13 19:41:45,304 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 6683 transitions. Word has length 12 [2021-10-13 19:41:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:45,305 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 6683 transitions. [2021-10-13 19:41:45,305 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 19:41:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 6683 transitions. [2021-10-13 19:41:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:41:45,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:45,306 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:45,331 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 19:41:45,516 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,SelfDestructingSolverStorable23 [2021-10-13 19:41:45,517 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:45,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1358821879, now seen corresponding path program 1 times [2021-10-13 19:41:45,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:45,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210820330] [2021-10-13 19:41:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:45,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:45,575 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 19:41:45,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:45,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210820330] [2021-10-13 19:41:45,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210820330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:45,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883982774] [2021-10-13 19:41:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:45,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:45,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:45,580 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 19:41:45,582 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 19:41:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:45,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:41:45,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:45,698 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 19:41:45,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883982774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:45,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:45,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:41:45,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464774128] [2021-10-13 19:41:45,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:41:45,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:41:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:45,701 INFO L87 Difference]: Start difference. First operand 1580 states and 6683 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:45,738 INFO L93 Difference]: Finished difference Result 2546 states and 10346 transitions. [2021-10-13 19:41:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:41:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 12 [2021-10-13 19:41:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:45,750 INFO L225 Difference]: With dead ends: 2546 [2021-10-13 19:41:45,750 INFO L226 Difference]: Without dead ends: 2518 [2021-10-13 19:41:45,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:41:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-10-13 19:41:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1890. [2021-10-13 19:41:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1867 states have (on average 4.411355115158008) internal successors, (8236), 1889 states have internal predecessors, (8236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 8236 transitions. [2021-10-13 19:41:45,823 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 8236 transitions. Word has length 12 [2021-10-13 19:41:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:45,823 INFO L470 AbstractCegarLoop]: Abstraction has 1890 states and 8236 transitions. [2021-10-13 19:41:45,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 8236 transitions. [2021-10-13 19:41:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:41:45,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:45,825 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2021-10-13 19:41:45,853 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 19:41:46,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 19:41:46,035 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:46,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -426740895, now seen corresponding path program 9 times [2021-10-13 19:41:46,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:46,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666966546] [2021-10-13 19:41:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:46,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:46,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:46,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666966546] [2021-10-13 19:41:46,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666966546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:46,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128264506] [2021-10-13 19:41:46,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:41:46,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:46,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:46,163 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 19:41:46,163 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 19:41:46,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 19:41:46,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:46,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:41:46,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128264506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:46,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:46,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 19:41:46,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948266565] [2021-10-13 19:41:46,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:41:46,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:41:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:41:46,316 INFO L87 Difference]: Start difference. First operand 1890 states and 8236 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:46,480 INFO L93 Difference]: Finished difference Result 3554 states and 15102 transitions. [2021-10-13 19:41:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:41:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 12 [2021-10-13 19:41:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:46,492 INFO L225 Difference]: With dead ends: 3554 [2021-10-13 19:41:46,492 INFO L226 Difference]: Without dead ends: 3430 [2021-10-13 19:41:46,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:41:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2021-10-13 19:41:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2048. [2021-10-13 19:41:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2025 states have (on average 4.403456790123457) internal successors, (8917), 2047 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 8917 transitions. [2021-10-13 19:41:46,566 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 8917 transitions. Word has length 12 [2021-10-13 19:41:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 8917 transitions. [2021-10-13 19:41:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 8917 transitions. [2021-10-13 19:41:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:41:46,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:46,569 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-13 19:41:46,614 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 19:41:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:46,782 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash -344065396, now seen corresponding path program 10 times [2021-10-13 19:41:46,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:46,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444099934] [2021-10-13 19:41:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:46,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:46,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:46,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444099934] [2021-10-13 19:41:46,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444099934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:46,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155658549] [2021-10-13 19:41:46,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:46,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:46,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:46,881 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 19:41:46,904 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 19:41:46,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:46,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:46,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:41:46,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:47,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155658549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:47,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:47,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 19:41:47,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542673206] [2021-10-13 19:41:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:41:47,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:41:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:41:47,027 INFO L87 Difference]: Start difference. First operand 2048 states and 8917 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:47,202 INFO L93 Difference]: Finished difference Result 3878 states and 16488 transitions. [2021-10-13 19:41:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:41:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 19:41:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:47,216 INFO L225 Difference]: With dead ends: 3878 [2021-10-13 19:41:47,216 INFO L226 Difference]: Without dead ends: 3750 [2021-10-13 19:41:47,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:41:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-10-13 19:41:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 2206. [2021-10-13 19:41:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2183 states have (on average 4.396701786532295) internal successors, (9598), 2205 states have internal predecessors, (9598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 9598 transitions. [2021-10-13 19:41:47,271 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 9598 transitions. Word has length 13 [2021-10-13 19:41:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:47,271 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 9598 transitions. [2021-10-13 19:41:47,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 9598 transitions. [2021-10-13 19:41:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:41:47,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:47,273 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:41:47,296 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 19:41:47,476 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,SelfDestructingSolverStorable26 [2021-10-13 19:41:47,477 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:47,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1638725724, now seen corresponding path program 2 times [2021-10-13 19:41:47,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:47,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025730201] [2021-10-13 19:41:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:47,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:47,514 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 19:41:47,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:47,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025730201] [2021-10-13 19:41:47,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025730201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:47,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982426025] [2021-10-13 19:41:47,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:47,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:47,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:47,516 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 19:41:47,536 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 19:41:47,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:41:47,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:47,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:41:47,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:47,667 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 19:41:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982426025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:41:47,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:41:47,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:41:47,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717963139] [2021-10-13 19:41:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:41:47,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:41:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:47,669 INFO L87 Difference]: Start difference. First operand 2206 states and 9598 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:41:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:47,687 INFO L93 Difference]: Finished difference Result 1884 states and 8060 transitions. [2021-10-13 19:41:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:41:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 14 [2021-10-13 19:41:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:47,693 INFO L225 Difference]: With dead ends: 1884 [2021-10-13 19:41:47,693 INFO L226 Difference]: Without dead ends: 1528 [2021-10-13 19:41:47,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:41:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-13 19:41:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 972. [2021-10-13 19:41:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 957 states have (on average 3.9456635318704283) internal successors, (3776), 971 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3776 transitions. [2021-10-13 19:41:47,724 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3776 transitions. Word has length 14 [2021-10-13 19:41:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:47,724 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 3776 transitions. [2021-10-13 19:41:47,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:41:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3776 transitions. [2021-10-13 19:41:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:41:47,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:47,726 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2021-10-13 19:41:47,764 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 19:41:47,941 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,SelfDestructingSolverStorable27 [2021-10-13 19:41:47,942 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:47,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2076092223, now seen corresponding path program 11 times [2021-10-13 19:41:47,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:47,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489159111] [2021-10-13 19:41:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:47,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:48,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:48,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489159111] [2021-10-13 19:41:48,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489159111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:48,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237297575] [2021-10-13 19:41:48,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:48,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:48,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:48,050 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 19:41:48,068 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 19:41:48,153 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 19:41:48,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:48,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:41:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:48,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237297575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:48,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:48,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 19:41:48,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262859059] [2021-10-13 19:41:48,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:41:48,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:41:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:41:48,207 INFO L87 Difference]: Start difference. First operand 972 states and 3776 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:48,346 INFO L93 Difference]: Finished difference Result 1888 states and 7330 transitions. [2021-10-13 19:41:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:41:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 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 19:41:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:48,353 INFO L225 Difference]: With dead ends: 1888 [2021-10-13 19:41:48,353 INFO L226 Difference]: Without dead ends: 1648 [2021-10-13 19:41:48,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:41:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-10-13 19:41:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1032. [2021-10-13 19:41:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1017 states have (on average 3.9410029498525074) internal successors, (4008), 1031 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 4008 transitions. [2021-10-13 19:41:48,382 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 4008 transitions. Word has length 14 [2021-10-13 19:41:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:48,383 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 4008 transitions. [2021-10-13 19:41:48,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 4008 transitions. [2021-10-13 19:41:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 19:41:48,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:48,384 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-13 19:41:48,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-13 19:41:48,594 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,SelfDestructingSolverStorable28 [2021-10-13 19:41:48,595 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash 65650988, now seen corresponding path program 12 times [2021-10-13 19:41:48,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:48,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552397929] [2021-10-13 19:41:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:48,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:48,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:48,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552397929] [2021-10-13 19:41:48,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552397929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:48,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083858614] [2021-10-13 19:41:48,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:48,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:48,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:48,713 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 19:41:48,714 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 19:41:48,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 19:41:48,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:48,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 19:41:48,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:48,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083858614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:48,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 19:41:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696158948] [2021-10-13 19:41:48,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:41:48,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:41:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:41:48,882 INFO L87 Difference]: Start difference. First operand 1032 states and 4008 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:49,030 INFO L93 Difference]: Finished difference Result 2024 states and 7863 transitions. [2021-10-13 19:41:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:41:49,030 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 19:41:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:49,036 INFO L225 Difference]: With dead ends: 2024 [2021-10-13 19:41:49,036 INFO L226 Difference]: Without dead ends: 1764 [2021-10-13 19:41:49,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:41:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-13 19:41:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1092. [2021-10-13 19:41:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1077 states have (on average 3.9368616527390903) internal successors, (4240), 1091 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 4240 transitions. [2021-10-13 19:41:49,061 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 4240 transitions. Word has length 15 [2021-10-13 19:41:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:49,062 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 4240 transitions. [2021-10-13 19:41:49,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 4240 transitions. [2021-10-13 19:41:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 19:41:49,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:49,064 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2021-10-13 19:41:49,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:49,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:49,271 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2035181089, now seen corresponding path program 13 times [2021-10-13 19:41:49,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:49,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254827861] [2021-10-13 19:41:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:49,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:49,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:49,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254827861] [2021-10-13 19:41:49,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254827861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:49,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607687937] [2021-10-13 19:41:49,399 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:41:49,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:49,400 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 19:41:49,423 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 19:41:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:49,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:41:49,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:49,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607687937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:49,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:49,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 19:41:49,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419142801] [2021-10-13 19:41:49,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:41:49,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:41:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:41:49,585 INFO L87 Difference]: Start difference. First operand 1092 states and 4240 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 19:41:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:49,752 INFO L93 Difference]: Finished difference Result 2160 states and 8396 transitions. [2021-10-13 19:41:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:41:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 16 [2021-10-13 19:41:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:49,761 INFO L225 Difference]: With dead ends: 2160 [2021-10-13 19:41:49,761 INFO L226 Difference]: Without dead ends: 1880 [2021-10-13 19:41:49,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:41:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-10-13 19:41:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1152. [2021-10-13 19:41:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1137 states have (on average 3.9331574318381706) internal successors, (4472), 1151 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4472 transitions. [2021-10-13 19:41:49,802 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4472 transitions. Word has length 16 [2021-10-13 19:41:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:49,803 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4472 transitions. [2021-10-13 19:41:49,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 19:41:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4472 transitions. [2021-10-13 19:41:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:41:49,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:49,806 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2021-10-13 19:41:49,848 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 19:41:50,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:50,022 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1333895220, now seen corresponding path program 14 times [2021-10-13 19:41:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:50,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134266103] [2021-10-13 19:41:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:50,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:50,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:50,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134266103] [2021-10-13 19:41:50,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134266103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:50,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54356192] [2021-10-13 19:41:50,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:50,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:50,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:50,168 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 19:41:50,193 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 19:41:50,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:41:50,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:50,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:41:50,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:50,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54356192] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:50,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:50,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 19:41:50,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126466021] [2021-10-13 19:41:50,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:41:50,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:50,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:41:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:41:50,370 INFO L87 Difference]: Start difference. First operand 1152 states and 4472 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 19:41:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:50,540 INFO L93 Difference]: Finished difference Result 2296 states and 8929 transitions. [2021-10-13 19:41:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:41:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 17 [2021-10-13 19:41:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:50,548 INFO L225 Difference]: With dead ends: 2296 [2021-10-13 19:41:50,548 INFO L226 Difference]: Without dead ends: 1996 [2021-10-13 19:41:50,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:41:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-10-13 19:41:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1212. [2021-10-13 19:41:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1197 states have (on average 3.9298245614035086) internal successors, (4704), 1211 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4704 transitions. [2021-10-13 19:41:50,581 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4704 transitions. Word has length 17 [2021-10-13 19:41:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:50,581 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 4704 transitions. [2021-10-13 19:41:50,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 19:41:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4704 transitions. [2021-10-13 19:41:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:41:50,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:50,584 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2021-10-13 19:41:50,619 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 19:41:50,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 19:41:50,798 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:50,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1598921601, now seen corresponding path program 15 times [2021-10-13 19:41:50,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:50,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772906887] [2021-10-13 19:41:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:50,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:50,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:50,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772906887] [2021-10-13 19:41:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772906887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:50,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631280633] [2021-10-13 19:41:50,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:41:50,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:50,989 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 19:41:50,991 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 19:41:51,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 19:41:51,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:51,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 19:41:51,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:51,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631280633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:51,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:51,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 19:41:51,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355313458] [2021-10-13 19:41:51,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:41:51,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:41:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:41:51,183 INFO L87 Difference]: Start difference. First operand 1212 states and 4704 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:51,374 INFO L93 Difference]: Finished difference Result 2432 states and 9462 transitions. [2021-10-13 19:41:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:41:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 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 19:41:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:51,381 INFO L225 Difference]: With dead ends: 2432 [2021-10-13 19:41:51,381 INFO L226 Difference]: Without dead ends: 2112 [2021-10-13 19:41:51,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:41:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-10-13 19:41:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1272. [2021-10-13 19:41:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1257 states have (on average 3.9268098647573586) internal successors, (4936), 1271 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 4936 transitions. [2021-10-13 19:41:51,409 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 4936 transitions. Word has length 18 [2021-10-13 19:41:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:51,409 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 4936 transitions. [2021-10-13 19:41:51,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 4936 transitions. [2021-10-13 19:41:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 19:41:51,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:51,412 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2021-10-13 19:41:51,437 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 19:41:51,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:51,625 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1973037460, now seen corresponding path program 16 times [2021-10-13 19:41:51,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:51,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757801932] [2021-10-13 19:41:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:51,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:51,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:51,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757801932] [2021-10-13 19:41:51,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757801932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:51,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049846803] [2021-10-13 19:41:51,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:51,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:51,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:51,814 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 19:41:51,815 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 19:41:51,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:51,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:41:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:52,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049846803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:52,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 19:41:52,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798191146] [2021-10-13 19:41:52,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:41:52,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:52,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:41:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:41:52,022 INFO L87 Difference]: Start difference. First operand 1272 states and 4936 transitions. Second operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 19:41:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:52,215 INFO L93 Difference]: Finished difference Result 2568 states and 9995 transitions. [2021-10-13 19:41:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:41:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 19 [2021-10-13 19:41:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:52,225 INFO L225 Difference]: With dead ends: 2568 [2021-10-13 19:41:52,225 INFO L226 Difference]: Without dead ends: 2228 [2021-10-13 19:41:52,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:41:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-10-13 19:41:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1332. [2021-10-13 19:41:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1317 states have (on average 3.924069855732726) internal successors, (5168), 1331 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 5168 transitions. [2021-10-13 19:41:52,271 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 5168 transitions. Word has length 19 [2021-10-13 19:41:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:52,271 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 5168 transitions. [2021-10-13 19:41:52,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 19:41:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 5168 transitions. [2021-10-13 19:41:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:41:52,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:52,275 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2021-10-13 19:41:52,313 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 19:41:52,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:52,489 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:52,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:52,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1034618655, now seen corresponding path program 17 times [2021-10-13 19:41:52,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:52,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454008962] [2021-10-13 19:41:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:52,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:52,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:52,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454008962] [2021-10-13 19:41:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454008962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:52,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741059945] [2021-10-13 19:41:52,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:52,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:52,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:52,692 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 19:41:52,694 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 19:41:52,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-13 19:41:52,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:52,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 19:41:52,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:52,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741059945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:52,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:52,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 19:41:52,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743655633] [2021-10-13 19:41:52,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:41:52,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:41:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:41:52,905 INFO L87 Difference]: Start difference. First operand 1332 states and 5168 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:53,127 INFO L93 Difference]: Finished difference Result 2704 states and 10528 transitions. [2021-10-13 19:41:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:41:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2021-10-13 19:41:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:53,137 INFO L225 Difference]: With dead ends: 2704 [2021-10-13 19:41:53,137 INFO L226 Difference]: Without dead ends: 2344 [2021-10-13 19:41:53,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:41:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-13 19:41:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1392. [2021-10-13 19:41:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1377 states have (on average 3.9215686274509802) internal successors, (5400), 1391 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5400 transitions. [2021-10-13 19:41:53,178 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5400 transitions. Word has length 20 [2021-10-13 19:41:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:53,178 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5400 transitions. [2021-10-13 19:41:53,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5400 transitions. [2021-10-13 19:41:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:41:53,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:53,181 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2021-10-13 19:41:53,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-13 19:41:53,390 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,SelfDestructingSolverStorable34 [2021-10-13 19:41:53,391 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2008406772, now seen corresponding path program 18 times [2021-10-13 19:41:53,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:53,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906634043] [2021-10-13 19:41:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:53,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:53,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:53,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906634043] [2021-10-13 19:41:53,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906634043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:53,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117532753] [2021-10-13 19:41:53,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:53,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:53,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:53,625 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 19:41:53,644 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 19:41:53,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-13 19:41:53,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:53,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:41:53,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:53,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117532753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:53,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:53,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 19:41:53,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321247357] [2021-10-13 19:41:53,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:41:53,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:41:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:41:53,850 INFO L87 Difference]: Start difference. First operand 1392 states and 5400 transitions. Second operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:54,099 INFO L93 Difference]: Finished difference Result 2840 states and 11061 transitions. [2021-10-13 19:41:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:41:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 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 21 [2021-10-13 19:41:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:54,111 INFO L225 Difference]: With dead ends: 2840 [2021-10-13 19:41:54,111 INFO L226 Difference]: Without dead ends: 2460 [2021-10-13 19:41:54,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:41:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-10-13 19:41:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1452. [2021-10-13 19:41:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1437 states have (on average 3.919276270006959) internal successors, (5632), 1451 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5632 transitions. [2021-10-13 19:41:54,158 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5632 transitions. Word has length 21 [2021-10-13 19:41:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:54,158 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5632 transitions. [2021-10-13 19:41:54,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5632 transitions. [2021-10-13 19:41:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:41:54,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:54,163 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2021-10-13 19:41:54,202 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 19:41:54,376 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,SelfDestructingSolverStorable35 [2021-10-13 19:41:54,377 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2131067327, now seen corresponding path program 19 times [2021-10-13 19:41:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:54,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198609328] [2021-10-13 19:41:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:54,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:54,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:54,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198609328] [2021-10-13 19:41:54,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198609328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:54,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092328383] [2021-10-13 19:41:54,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:41:54,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:54,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:54,610 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 19:41:54,612 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 19:41:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 19:41:54,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:54,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092328383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:54,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:54,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 19:41:54,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069727310] [2021-10-13 19:41:54,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:41:54,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:41:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:41:54,833 INFO L87 Difference]: Start difference. First operand 1452 states and 5632 transitions. Second operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 19:41:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:55,087 INFO L93 Difference]: Finished difference Result 2976 states and 11594 transitions. [2021-10-13 19:41:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:41:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 22 [2021-10-13 19:41:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:55,095 INFO L225 Difference]: With dead ends: 2976 [2021-10-13 19:41:55,095 INFO L226 Difference]: Without dead ends: 2576 [2021-10-13 19:41:55,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 171.4ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:41:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-10-13 19:41:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1512. [2021-10-13 19:41:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1497 states have (on average 3.917167668670675) internal successors, (5864), 1511 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5864 transitions. [2021-10-13 19:41:55,129 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5864 transitions. Word has length 22 [2021-10-13 19:41:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:55,130 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5864 transitions. [2021-10-13 19:41:55,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 19:41:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5864 transitions. [2021-10-13 19:41:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:41:55,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:55,134 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2021-10-13 19:41:55,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:55,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:55,340 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1638577236, now seen corresponding path program 20 times [2021-10-13 19:41:55,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:55,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926078511] [2021-10-13 19:41:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:55,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:55,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:55,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926078511] [2021-10-13 19:41:55,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926078511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:55,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820188856] [2021-10-13 19:41:55,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:41:55,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:55,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:55,587 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 19:41:55,590 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 19:41:55,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:41:55,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:55,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:41:55,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820188856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:55,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:55,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 19:41:55,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390883021] [2021-10-13 19:41:55,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:41:55,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:55,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:41:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:55,821 INFO L87 Difference]: Start difference. First operand 1512 states and 5864 transitions. Second operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 19:41:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:56,115 INFO L93 Difference]: Finished difference Result 3112 states and 12127 transitions. [2021-10-13 19:41:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:41:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 23 [2021-10-13 19:41:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:56,124 INFO L225 Difference]: With dead ends: 3112 [2021-10-13 19:41:56,124 INFO L226 Difference]: Without dead ends: 2692 [2021-10-13 19:41:56,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:41:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-10-13 19:41:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1572. [2021-10-13 19:41:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1557 states have (on average 3.9152215799614645) internal successors, (6096), 1571 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 6096 transitions. [2021-10-13 19:41:56,160 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 6096 transitions. Word has length 23 [2021-10-13 19:41:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:56,161 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 6096 transitions. [2021-10-13 19:41:56,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 19:41:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 6096 transitions. [2021-10-13 19:41:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:41:56,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:56,165 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2021-10-13 19:41:56,201 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 19:41:56,377 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,SelfDestructingSolverStorable37 [2021-10-13 19:41:56,378 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash 743713697, now seen corresponding path program 21 times [2021-10-13 19:41:56,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:56,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709584924] [2021-10-13 19:41:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:56,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:56,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:56,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709584924] [2021-10-13 19:41:56,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709584924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:56,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964081607] [2021-10-13 19:41:56,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:41:56,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:56,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:56,643 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 19:41:56,644 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 19:41:56,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-13 19:41:56,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:56,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 19:41:56,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:56,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964081607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:56,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:56,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 19:41:56,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668144828] [2021-10-13 19:41:56,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:41:56,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:41:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:41:56,909 INFO L87 Difference]: Start difference. First operand 1572 states and 6096 transitions. Second operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 19:41:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:57,213 INFO L93 Difference]: Finished difference Result 3248 states and 12660 transitions. [2021-10-13 19:41:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:41:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 24 [2021-10-13 19:41:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:57,226 INFO L225 Difference]: With dead ends: 3248 [2021-10-13 19:41:57,226 INFO L226 Difference]: Without dead ends: 2808 [2021-10-13 19:41:57,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:41:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-10-13 19:41:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1632. [2021-10-13 19:41:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1617 states have (on average 3.9134199134199132) internal successors, (6328), 1631 states have internal predecessors, (6328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 6328 transitions. [2021-10-13 19:41:57,273 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 6328 transitions. Word has length 24 [2021-10-13 19:41:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:57,273 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 6328 transitions. [2021-10-13 19:41:57,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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 19:41:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 6328 transitions. [2021-10-13 19:41:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:41:57,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:57,276 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2021-10-13 19:41:57,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 19:41:57,477 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,SelfDestructingSolverStorable38 [2021-10-13 19:41:57,477 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:57,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1580288588, now seen corresponding path program 22 times [2021-10-13 19:41:57,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:57,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984449585] [2021-10-13 19:41:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:57,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:57,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:57,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984449585] [2021-10-13 19:41:57,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984449585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:57,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972278234] [2021-10-13 19:41:57,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:41:57,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:57,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:57,768 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 19:41:57,785 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 19:41:57,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:41:57,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 19:41:57,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:58,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972278234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:58,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:58,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 19:41:58,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269633396] [2021-10-13 19:41:58,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:41:58,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:41:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:41:58,040 INFO L87 Difference]: Start difference. First operand 1632 states and 6328 transitions. Second operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 19:41:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:58,298 INFO L93 Difference]: Finished difference Result 3384 states and 13193 transitions. [2021-10-13 19:41:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:41:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 25 [2021-10-13 19:41:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:58,307 INFO L225 Difference]: With dead ends: 3384 [2021-10-13 19:41:58,307 INFO L226 Difference]: Without dead ends: 2924 [2021-10-13 19:41:58,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 220.1ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:41:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-10-13 19:41:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1692. [2021-10-13 19:41:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1677 states have (on average 3.911747167561121) internal successors, (6560), 1691 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 6560 transitions. [2021-10-13 19:41:58,350 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 6560 transitions. Word has length 25 [2021-10-13 19:41:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:58,351 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 6560 transitions. [2021-10-13 19:41:58,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 19:41:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 6560 transitions. [2021-10-13 19:41:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:41:58,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:58,353 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2021-10-13 19:41:58,376 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 19:41:58,554 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,SelfDestructingSolverStorable39 [2021-10-13 19:41:58,554 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1744306433, now seen corresponding path program 23 times [2021-10-13 19:41:58,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:58,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68628397] [2021-10-13 19:41:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:58,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:58,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:58,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68628397] [2021-10-13 19:41:58,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68628397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:58,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080812691] [2021-10-13 19:41:58,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:41:58,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:58,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:58,855 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 19:41:58,856 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 19:41:59,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-13 19:41:59,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:41:59,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 19:41:59,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:41:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080812691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:59,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:41:59,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 19:41:59,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339584659] [2021-10-13 19:41:59,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 19:41:59,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:41:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 19:41:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:41:59,112 INFO L87 Difference]: Start difference. First operand 1692 states and 6560 transitions. Second operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:41:59,413 INFO L93 Difference]: Finished difference Result 3520 states and 13726 transitions. [2021-10-13 19:41:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:41:59,413 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 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 26 [2021-10-13 19:41:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:41:59,422 INFO L225 Difference]: With dead ends: 3520 [2021-10-13 19:41:59,422 INFO L226 Difference]: Without dead ends: 3040 [2021-10-13 19:41:59,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 232.5ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:41:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-10-13 19:41:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1752. [2021-10-13 19:41:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1737 states have (on average 3.9101899827288427) internal successors, (6792), 1751 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 6792 transitions. [2021-10-13 19:41:59,459 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 6792 transitions. Word has length 26 [2021-10-13 19:41:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:41:59,460 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 6792 transitions. [2021-10-13 19:41:59,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:41:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 6792 transitions. [2021-10-13 19:41:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:41:59,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:41:59,462 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2021-10-13 19:41:59,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-13 19:41:59,663 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,SelfDestructingSolverStorable40 [2021-10-13 19:41:59,663 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:41:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:41:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1761074964, now seen corresponding path program 24 times [2021-10-13 19:41:59,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:41:59,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978990706] [2021-10-13 19:41:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:41:59,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:41:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:41:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:41:59,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:41:59,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978990706] [2021-10-13 19:41:59,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978990706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:41:59,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276035871] [2021-10-13 19:41:59,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:41:59,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:41:59,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:41:59,960 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 19:41:59,965 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 19:42:00,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-13 19:42:00,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:00,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:42:00,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:00,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276035871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:00,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:00,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-13 19:42:00,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379212740] [2021-10-13 19:42:00,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:42:00,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:42:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:42:00,245 INFO L87 Difference]: Start difference. First operand 1752 states and 6792 transitions. Second operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 19:42:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:00,600 INFO L93 Difference]: Finished difference Result 3656 states and 14259 transitions. [2021-10-13 19:42:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:42:00,600 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 27 [2021-10-13 19:42:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:00,610 INFO L225 Difference]: With dead ends: 3656 [2021-10-13 19:42:00,610 INFO L226 Difference]: Without dead ends: 3156 [2021-10-13 19:42:00,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:42:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-10-13 19:42:00,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1812. [2021-10-13 19:42:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1797 states have (on average 3.9087367835281026) internal successors, (7024), 1811 states have internal predecessors, (7024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 7024 transitions. [2021-10-13 19:42:00,650 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 7024 transitions. Word has length 27 [2021-10-13 19:42:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:00,650 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 7024 transitions. [2021-10-13 19:42:00,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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 19:42:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 7024 transitions. [2021-10-13 19:42:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 19:42:00,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:00,653 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2021-10-13 19:42:00,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 19:42:00,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:00,854 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:00,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1241251425, now seen corresponding path program 25 times [2021-10-13 19:42:00,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:00,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770091101] [2021-10-13 19:42:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:00,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:01,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:01,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770091101] [2021-10-13 19:42:01,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770091101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:01,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881737682] [2021-10-13 19:42:01,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:01,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:01,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:01,200 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 19:42:01,219 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 19:42:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:42:01,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:01,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881737682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:01,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:01,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-13 19:42:01,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702809323] [2021-10-13 19:42:01,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:42:01,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:42:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:42:01,483 INFO L87 Difference]: Start difference. First operand 1812 states and 7024 transitions. Second operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 19:42:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:01,825 INFO L93 Difference]: Finished difference Result 3792 states and 14792 transitions. [2021-10-13 19:42:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:42:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 28 [2021-10-13 19:42:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:01,839 INFO L225 Difference]: With dead ends: 3792 [2021-10-13 19:42:01,839 INFO L226 Difference]: Without dead ends: 3272 [2021-10-13 19:42:01,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 273.9ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:42:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-10-13 19:42:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1872. [2021-10-13 19:42:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1857 states have (on average 3.907377490576198) internal successors, (7256), 1871 states have internal predecessors, (7256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 7256 transitions. [2021-10-13 19:42:01,896 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 7256 transitions. Word has length 28 [2021-10-13 19:42:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:01,897 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 7256 transitions. [2021-10-13 19:42:01,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 19:42:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 7256 transitions. [2021-10-13 19:42:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 19:42:01,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:01,901 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2021-10-13 19:42:01,924 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 19:42:02,101 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,SelfDestructingSolverStorable42 [2021-10-13 19:42:02,102 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:02,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:02,103 INFO L82 PathProgramCache]: Analyzing trace with hash -175911028, now seen corresponding path program 26 times [2021-10-13 19:42:02,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:02,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757300442] [2021-10-13 19:42:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:02,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:02,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:02,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757300442] [2021-10-13 19:42:02,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757300442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:02,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181728524] [2021-10-13 19:42:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:02,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:02,487 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 19:42:02,503 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 19:42:02,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:02,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:02,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:42:02,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:02,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181728524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:02,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:02,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-13 19:42:02,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929165043] [2021-10-13 19:42:02,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 19:42:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 19:42:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:42:02,765 INFO L87 Difference]: Start difference. First operand 1872 states and 7256 transitions. Second operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 19:42:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:03,123 INFO L93 Difference]: Finished difference Result 3928 states and 15325 transitions. [2021-10-13 19:42:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 19:42:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 29 [2021-10-13 19:42:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:03,139 INFO L225 Difference]: With dead ends: 3928 [2021-10-13 19:42:03,139 INFO L226 Difference]: Without dead ends: 3388 [2021-10-13 19:42:03,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 306.9ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:42:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2021-10-13 19:42:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1932. [2021-10-13 19:42:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1917 states have (on average 3.9061032863849765) internal successors, (7488), 1931 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7488 transitions. [2021-10-13 19:42:03,212 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7488 transitions. Word has length 29 [2021-10-13 19:42:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:03,213 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 7488 transitions. [2021-10-13 19:42:03,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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 19:42:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7488 transitions. [2021-10-13 19:42:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 19:42:03,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:03,218 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2021-10-13 19:42:03,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 19:42:03,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:03,432 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1158274111, now seen corresponding path program 27 times [2021-10-13 19:42:03,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:03,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476365186] [2021-10-13 19:42:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:03,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:03,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:03,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476365186] [2021-10-13 19:42:03,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476365186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:03,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165117644] [2021-10-13 19:42:03,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:03,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:03,845 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 19:42:03,860 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 19:42:04,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-13 19:42:04,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:04,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 19:42:04,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:04,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165117644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:04,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:04,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-13 19:42:04,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008779843] [2021-10-13 19:42:04,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 19:42:04,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 19:42:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:42:04,154 INFO L87 Difference]: Start difference. First operand 1932 states and 7488 transitions. Second operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 19:42:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:04,523 INFO L93 Difference]: Finished difference Result 4064 states and 15858 transitions. [2021-10-13 19:42:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 19:42:04,524 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 30 [2021-10-13 19:42:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:04,534 INFO L225 Difference]: With dead ends: 4064 [2021-10-13 19:42:04,534 INFO L226 Difference]: Without dead ends: 3504 [2021-10-13 19:42:04,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 316.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:42:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2021-10-13 19:42:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 1992. [2021-10-13 19:42:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1977 states have (on average 3.904906423874557) internal successors, (7720), 1991 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 7720 transitions. [2021-10-13 19:42:04,610 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 7720 transitions. Word has length 30 [2021-10-13 19:42:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:04,611 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 7720 transitions. [2021-10-13 19:42:04,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 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 19:42:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 7720 transitions. [2021-10-13 19:42:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 19:42:04,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:04,614 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2021-10-13 19:42:04,637 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 19:42:04,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-13 19:42:04,815 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:04,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1546758612, now seen corresponding path program 28 times [2021-10-13 19:42:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:04,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556744723] [2021-10-13 19:42:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:04,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:05,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:05,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556744723] [2021-10-13 19:42:05,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556744723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:05,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984360187] [2021-10-13 19:42:05,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:05,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:05,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:05,232 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 19:42:05,236 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 19:42:05,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:05,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:05,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:42:05,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:05,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984360187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:05,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:05,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-13 19:42:05,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654954238] [2021-10-13 19:42:05,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 19:42:05,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 19:42:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:42:05,541 INFO L87 Difference]: Start difference. First operand 1992 states and 7720 transitions. Second operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 19:42:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:05,935 INFO L93 Difference]: Finished difference Result 4200 states and 16391 transitions. [2021-10-13 19:42:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:42:05,936 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 31 [2021-10-13 19:42:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:05,947 INFO L225 Difference]: With dead ends: 4200 [2021-10-13 19:42:05,947 INFO L226 Difference]: Without dead ends: 3620 [2021-10-13 19:42:05,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 342.8ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:42:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2021-10-13 19:42:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2052. [2021-10-13 19:42:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2037 states have (on average 3.9037800687285222) internal successors, (7952), 2051 states have internal predecessors, (7952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 7952 transitions. [2021-10-13 19:42:05,995 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 7952 transitions. Word has length 31 [2021-10-13 19:42:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:05,995 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 7952 transitions. [2021-10-13 19:42:05,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 19:42:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 7952 transitions. [2021-10-13 19:42:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 19:42:05,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:05,998 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2021-10-13 19:42:06,022 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 19:42:06,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:06,199 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash -704876255, now seen corresponding path program 29 times [2021-10-13 19:42:06,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:06,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437548403] [2021-10-13 19:42:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:06,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:06,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:06,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437548403] [2021-10-13 19:42:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437548403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:06,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437410962] [2021-10-13 19:42:06,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:06,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:06,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:06,626 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 19:42:06,643 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 19:42:06,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-13 19:42:06,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:06,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 19:42:06,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:06,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437410962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:06,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:06,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-13 19:42:06,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537171556] [2021-10-13 19:42:06,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 19:42:06,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 19:42:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:42:06,951 INFO L87 Difference]: Start difference. First operand 2052 states and 7952 transitions. Second operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 19:42:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:07,446 INFO L93 Difference]: Finished difference Result 4336 states and 16924 transitions. [2021-10-13 19:42:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:42:07,446 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 32 [2021-10-13 19:42:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:07,458 INFO L225 Difference]: With dead ends: 4336 [2021-10-13 19:42:07,458 INFO L226 Difference]: Without dead ends: 3736 [2021-10-13 19:42:07,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 351.0ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:42:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-10-13 19:42:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 2112. [2021-10-13 19:42:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2097 states have (on average 3.9027181688125894) internal successors, (8184), 2111 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 8184 transitions. [2021-10-13 19:42:07,522 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 8184 transitions. Word has length 32 [2021-10-13 19:42:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:07,522 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 8184 transitions. [2021-10-13 19:42:07,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 19:42:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 8184 transitions. [2021-10-13 19:42:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 19:42:07,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:07,526 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2021-10-13 19:42:07,550 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 19:42:07,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:07,727 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash -376326964, now seen corresponding path program 30 times [2021-10-13 19:42:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:07,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856827936] [2021-10-13 19:42:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:07,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:08,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:08,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856827936] [2021-10-13 19:42:08,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856827936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:08,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920459507] [2021-10-13 19:42:08,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:42:08,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:08,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:08,205 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 19:42:08,222 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 19:42:08,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-13 19:42:08,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:08,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 19:42:08,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:08,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920459507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:08,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:08,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-13 19:42:08,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788068018] [2021-10-13 19:42:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 19:42:08,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 19:42:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:42:08,558 INFO L87 Difference]: Start difference. First operand 2112 states and 8184 transitions. Second operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 19:42:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:09,066 INFO L93 Difference]: Finished difference Result 4472 states and 17457 transitions. [2021-10-13 19:42:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:42:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 33 [2021-10-13 19:42:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:09,079 INFO L225 Difference]: With dead ends: 4472 [2021-10-13 19:42:09,079 INFO L226 Difference]: Without dead ends: 3852 [2021-10-13 19:42:09,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:42:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-10-13 19:42:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2172. [2021-10-13 19:42:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2157 states have (on average 3.9017153453871116) internal successors, (8416), 2171 states have internal predecessors, (8416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8416 transitions. [2021-10-13 19:42:09,129 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8416 transitions. Word has length 33 [2021-10-13 19:42:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:09,130 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 8416 transitions. [2021-10-13 19:42:09,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 19:42:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8416 transitions. [2021-10-13 19:42:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 19:42:09,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:09,135 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2021-10-13 19:42:09,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:09,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 19:42:09,346 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:09,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1218766465, now seen corresponding path program 31 times [2021-10-13 19:42:09,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:09,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478731322] [2021-10-13 19:42:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:09,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:09,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:09,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478731322] [2021-10-13 19:42:09,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478731322] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:09,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491114538] [2021-10-13 19:42:09,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:09,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:09,837 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 19:42:09,838 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 19:42:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:42:10,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:10,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491114538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:10,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:10,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-13 19:42:10,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271569737] [2021-10-13 19:42:10,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 19:42:10,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 19:42:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:42:10,182 INFO L87 Difference]: Start difference. First operand 2172 states and 8416 transitions. Second operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:10,660 INFO L93 Difference]: Finished difference Result 4608 states and 17990 transitions. [2021-10-13 19:42:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 19:42:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 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 34 [2021-10-13 19:42:10,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:10,672 INFO L225 Difference]: With dead ends: 4608 [2021-10-13 19:42:10,672 INFO L226 Difference]: Without dead ends: 3968 [2021-10-13 19:42:10,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 411.7ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:42:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-13 19:42:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2232. [2021-10-13 19:42:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2217 states have (on average 3.900766801984664) internal successors, (8648), 2231 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 8648 transitions. [2021-10-13 19:42:10,723 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 8648 transitions. Word has length 34 [2021-10-13 19:42:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:10,723 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 8648 transitions. [2021-10-13 19:42:10,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 8648 transitions. [2021-10-13 19:42:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 19:42:10,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:10,727 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2021-10-13 19:42:10,749 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 19:42:10,927 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,SelfDestructingSolverStorable48 [2021-10-13 19:42:10,927 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:10,928 INFO L82 PathProgramCache]: Analyzing trace with hash -872944788, now seen corresponding path program 32 times [2021-10-13 19:42:10,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:10,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382143121] [2021-10-13 19:42:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:10,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:11,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:11,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382143121] [2021-10-13 19:42:11,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382143121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:11,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072595478] [2021-10-13 19:42:11,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:11,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:11,415 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 19:42:11,417 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 19:42:11,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:11,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:11,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:42:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:11,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072595478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:11,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:11,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-13 19:42:11,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307273941] [2021-10-13 19:42:11,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-13 19:42:11,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-13 19:42:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:42:11,780 INFO L87 Difference]: Start difference. First operand 2232 states and 8648 transitions. Second operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:12,277 INFO L93 Difference]: Finished difference Result 4744 states and 18523 transitions. [2021-10-13 19:42:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:42:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 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 35 [2021-10-13 19:42:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:12,290 INFO L225 Difference]: With dead ends: 4744 [2021-10-13 19:42:12,290 INFO L226 Difference]: Without dead ends: 4084 [2021-10-13 19:42:12,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 398.6ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 19:42:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-10-13 19:42:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2292. [2021-10-13 19:42:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2277 states have (on average 3.8998682476943345) internal successors, (8880), 2291 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 8880 transitions. [2021-10-13 19:42:12,381 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 8880 transitions. Word has length 35 [2021-10-13 19:42:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:12,381 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 8880 transitions. [2021-10-13 19:42:12,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 8880 transitions. [2021-10-13 19:42:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 19:42:12,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:12,386 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2021-10-13 19:42:12,409 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 19:42:12,586 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,SelfDestructingSolverStorable49 [2021-10-13 19:42:12,587 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1291484191, now seen corresponding path program 33 times [2021-10-13 19:42:12,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:12,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399481453] [2021-10-13 19:42:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:12,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:13,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:13,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399481453] [2021-10-13 19:42:13,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399481453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:13,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333863850] [2021-10-13 19:42:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:13,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:13,150 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 19:42:13,151 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 19:42:13,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-13 19:42:13,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:13,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:42:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333863850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:13,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:13,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-13 19:42:13,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631839655] [2021-10-13 19:42:13,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 19:42:13,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 19:42:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:42:13,541 INFO L87 Difference]: Start difference. First operand 2292 states and 8880 transitions. Second operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:14,044 INFO L93 Difference]: Finished difference Result 4880 states and 19056 transitions. [2021-10-13 19:42:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:42:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 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 36 [2021-10-13 19:42:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:14,059 INFO L225 Difference]: With dead ends: 4880 [2021-10-13 19:42:14,059 INFO L226 Difference]: Without dead ends: 4200 [2021-10-13 19:42:14,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 475.8ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:42:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-10-13 19:42:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2352. [2021-10-13 19:42:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2337 states have (on average 3.899015832263586) internal successors, (9112), 2351 states have internal predecessors, (9112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 9112 transitions. [2021-10-13 19:42:14,114 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 9112 transitions. Word has length 36 [2021-10-13 19:42:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:14,114 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 9112 transitions. [2021-10-13 19:42:14,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 9112 transitions. [2021-10-13 19:42:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 19:42:14,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:14,119 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2021-10-13 19:42:14,143 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 19:42:14,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:14,319 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1381303796, now seen corresponding path program 34 times [2021-10-13 19:42:14,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:14,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456154426] [2021-10-13 19:42:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:14,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:14,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:14,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456154426] [2021-10-13 19:42:14,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456154426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:14,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99012267] [2021-10-13 19:42:14,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:14,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:14,887 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 19:42:14,888 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 19:42:15,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:15,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:15,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 19:42:15,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:15,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99012267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:15,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:15,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-13 19:42:15,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904401977] [2021-10-13 19:42:15,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 19:42:15,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:15,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 19:42:15,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:42:15,292 INFO L87 Difference]: Start difference. First operand 2352 states and 9112 transitions. Second operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:15,952 INFO L93 Difference]: Finished difference Result 5016 states and 19589 transitions. [2021-10-13 19:42:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 19:42:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 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 37 [2021-10-13 19:42:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:15,965 INFO L225 Difference]: With dead ends: 5016 [2021-10-13 19:42:15,965 INFO L226 Difference]: Without dead ends: 4316 [2021-10-13 19:42:15,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 474.8ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:42:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-13 19:42:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2412. [2021-10-13 19:42:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2397 states have (on average 3.898206090947017) internal successors, (9344), 2411 states have internal predecessors, (9344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 9344 transitions. [2021-10-13 19:42:16,059 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 9344 transitions. Word has length 37 [2021-10-13 19:42:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:16,059 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 9344 transitions. [2021-10-13 19:42:16,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 9344 transitions. [2021-10-13 19:42:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 19:42:16,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:16,064 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2021-10-13 19:42:16,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 19:42:16,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:16,264 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:16,265 INFO L82 PathProgramCache]: Analyzing trace with hash 129255745, now seen corresponding path program 35 times [2021-10-13 19:42:16,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:16,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052643789] [2021-10-13 19:42:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:16,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:16,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:16,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052643789] [2021-10-13 19:42:16,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052643789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:16,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970547099] [2021-10-13 19:42:16,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:16,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:16,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:16,859 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 19:42:16,860 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 19:42:17,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-13 19:42:17,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:17,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:42:17,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:17,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970547099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:17,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:17,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-13 19:42:17,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790319609] [2021-10-13 19:42:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 19:42:17,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 19:42:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:42:17,259 INFO L87 Difference]: Start difference. First operand 2412 states and 9344 transitions. Second operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:17,814 INFO L93 Difference]: Finished difference Result 5152 states and 20122 transitions. [2021-10-13 19:42:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 19:42:17,814 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 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 38 [2021-10-13 19:42:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:17,828 INFO L225 Difference]: With dead ends: 5152 [2021-10-13 19:42:17,828 INFO L226 Difference]: Without dead ends: 4432 [2021-10-13 19:42:17,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 507.0ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:42:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-10-13 19:42:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 2472. [2021-10-13 19:42:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2457 states have (on average 3.8974358974358974) internal successors, (9576), 2471 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 9576 transitions. [2021-10-13 19:42:17,885 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 9576 transitions. Word has length 38 [2021-10-13 19:42:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:17,885 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 9576 transitions. [2021-10-13 19:42:17,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 9576 transitions. [2021-10-13 19:42:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 19:42:17,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:17,890 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2021-10-13 19:42:17,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 19:42:18,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:18,091 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:18,092 INFO L82 PathProgramCache]: Analyzing trace with hash -288038740, now seen corresponding path program 36 times [2021-10-13 19:42:18,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:18,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877112033] [2021-10-13 19:42:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:18,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:18,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:18,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877112033] [2021-10-13 19:42:18,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877112033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988815289] [2021-10-13 19:42:18,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:42:18,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:18,736 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 19:42:18,745 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 19:42:19,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-13 19:42:19,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:19,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 19:42:19,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:19,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988815289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:19,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:19,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-13 19:42:19,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716832341] [2021-10-13 19:42:19,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-13 19:42:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-13 19:42:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:42:19,197 INFO L87 Difference]: Start difference. First operand 2472 states and 9576 transitions. Second operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:19,832 INFO L93 Difference]: Finished difference Result 5288 states and 20655 transitions. [2021-10-13 19:42:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 19:42:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 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 39 [2021-10-13 19:42:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:19,847 INFO L225 Difference]: With dead ends: 5288 [2021-10-13 19:42:19,848 INFO L226 Difference]: Without dead ends: 4548 [2021-10-13 19:42:19,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 554.1ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:42:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-10-13 19:42:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 2532. [2021-10-13 19:42:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2517 states have (on average 3.8967024235200634) internal successors, (9808), 2531 states have internal predecessors, (9808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 9808 transitions. [2021-10-13 19:42:19,912 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 9808 transitions. Word has length 39 [2021-10-13 19:42:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:19,912 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 9808 transitions. [2021-10-13 19:42:19,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 9808 transitions. [2021-10-13 19:42:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 19:42:19,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:19,918 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2021-10-13 19:42:19,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-13 19:42:20,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:42:20,119 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash -339265887, now seen corresponding path program 37 times [2021-10-13 19:42:20,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:20,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942686471] [2021-10-13 19:42:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:20,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:20,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:20,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942686471] [2021-10-13 19:42:20,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942686471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:20,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821812997] [2021-10-13 19:42:20,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:20,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:20,766 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 19:42:20,768 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 19:42:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:21,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-13 19:42:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:21,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821812997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:21,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:21,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-13 19:42:21,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370958108] [2021-10-13 19:42:21,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-13 19:42:21,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-13 19:42:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:42:21,204 INFO L87 Difference]: Start difference. First operand 2532 states and 9808 transitions. Second operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:21,811 INFO L93 Difference]: Finished difference Result 5424 states and 21188 transitions. [2021-10-13 19:42:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 19:42:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 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 40 [2021-10-13 19:42:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:21,827 INFO L225 Difference]: With dead ends: 5424 [2021-10-13 19:42:21,827 INFO L226 Difference]: Without dead ends: 4664 [2021-10-13 19:42:21,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 553.5ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 19:42:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-10-13 19:42:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 2592. [2021-10-13 19:42:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2577 states have (on average 3.8960031043849437) internal successors, (10040), 2591 states have internal predecessors, (10040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 10040 transitions. [2021-10-13 19:42:21,890 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 10040 transitions. Word has length 40 [2021-10-13 19:42:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 10040 transitions. [2021-10-13 19:42:21,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 10040 transitions. [2021-10-13 19:42:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 19:42:21,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:21,896 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2021-10-13 19:42:21,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-13 19:42:22,096 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,SelfDestructingSolverStorable54 [2021-10-13 19:42:22,097 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:22,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:22,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1927307444, now seen corresponding path program 38 times [2021-10-13 19:42:22,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:22,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890264258] [2021-10-13 19:42:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:22,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:22,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:22,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890264258] [2021-10-13 19:42:22,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890264258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:22,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513009406] [2021-10-13 19:42:22,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:22,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:22,848 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 19:42:22,855 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 19:42:23,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:23,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:23,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 19:42:23,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:23,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513009406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:23,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:23,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-13 19:42:23,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758371798] [2021-10-13 19:42:23,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 19:42:23,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 19:42:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:42:23,295 INFO L87 Difference]: Start difference. First operand 2592 states and 10040 transitions. Second operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:23,983 INFO L93 Difference]: Finished difference Result 5560 states and 21721 transitions. [2021-10-13 19:42:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 19:42:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 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 41 [2021-10-13 19:42:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:23,999 INFO L225 Difference]: With dead ends: 5560 [2021-10-13 19:42:24,000 INFO L226 Difference]: Without dead ends: 4780 [2021-10-13 19:42:24,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 561.5ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:42:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2021-10-13 19:42:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 2652. [2021-10-13 19:42:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2637 states have (on average 3.8953356086461888) internal successors, (10272), 2651 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 10272 transitions. [2021-10-13 19:42:24,063 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 10272 transitions. Word has length 41 [2021-10-13 19:42:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:24,063 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 10272 transitions. [2021-10-13 19:42:24,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 10272 transitions. [2021-10-13 19:42:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 19:42:24,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:24,068 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2021-10-13 19:42:24,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-13 19:42:24,269 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,SelfDestructingSolverStorable55 [2021-10-13 19:42:24,269 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:24,270 INFO L82 PathProgramCache]: Analyzing trace with hash 383011841, now seen corresponding path program 39 times [2021-10-13 19:42:24,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:24,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047730312] [2021-10-13 19:42:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:24,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:24,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:24,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047730312] [2021-10-13 19:42:24,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047730312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:24,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411492129] [2021-10-13 19:42:24,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:24,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:24,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:24,994 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 19:42:24,996 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 19:42:25,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-13 19:42:25,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:25,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:42:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:25,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411492129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:25,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:25,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-13 19:42:25,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712950059] [2021-10-13 19:42:25,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 19:42:25,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 19:42:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:42:25,495 INFO L87 Difference]: Start difference. First operand 2652 states and 10272 transitions. Second operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:26,185 INFO L93 Difference]: Finished difference Result 5696 states and 22254 transitions. [2021-10-13 19:42:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 19:42:26,186 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 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 42 [2021-10-13 19:42:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:26,203 INFO L225 Difference]: With dead ends: 5696 [2021-10-13 19:42:26,203 INFO L226 Difference]: Without dead ends: 4896 [2021-10-13 19:42:26,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 625.6ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:42:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2021-10-13 19:42:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 2712. [2021-10-13 19:42:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2697 states have (on average 3.8946978123841305) internal successors, (10504), 2711 states have internal predecessors, (10504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 10504 transitions. [2021-10-13 19:42:26,333 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 10504 transitions. Word has length 42 [2021-10-13 19:42:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:26,333 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 10504 transitions. [2021-10-13 19:42:26,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 10504 transitions. [2021-10-13 19:42:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 19:42:26,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:26,340 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2021-10-13 19:42:26,364 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 19:42:26,540 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,SelfDestructingSolverStorable56 [2021-10-13 19:42:26,541 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1011534356, now seen corresponding path program 40 times [2021-10-13 19:42:26,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:26,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671153237] [2021-10-13 19:42:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:26,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:27,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:27,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671153237] [2021-10-13 19:42:27,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671153237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:27,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425838868] [2021-10-13 19:42:27,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:27,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:27,297 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 19:42:27,322 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 19:42:27,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:27,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:27,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:42:27,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:27,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425838868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:27,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:27,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-13 19:42:27,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499175521] [2021-10-13 19:42:27,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-13 19:42:27,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-13 19:42:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:42:27,758 INFO L87 Difference]: Start difference. First operand 2712 states and 10504 transitions. Second operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:28,506 INFO L93 Difference]: Finished difference Result 5832 states and 22787 transitions. [2021-10-13 19:42:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 19:42:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 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 43 [2021-10-13 19:42:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:28,523 INFO L225 Difference]: With dead ends: 5832 [2021-10-13 19:42:28,523 INFO L226 Difference]: Without dead ends: 5012 [2021-10-13 19:42:28,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 647.9ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:42:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-10-13 19:42:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2772. [2021-10-13 19:42:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2757 states have (on average 3.894087776568734) internal successors, (10736), 2771 states have internal predecessors, (10736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 10736 transitions. [2021-10-13 19:42:28,593 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 10736 transitions. Word has length 43 [2021-10-13 19:42:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:28,593 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 10736 transitions. [2021-10-13 19:42:28,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 10736 transitions. [2021-10-13 19:42:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 19:42:28,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:28,598 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2021-10-13 19:42:28,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-13 19:42:28,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:28,799 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1292793503, now seen corresponding path program 41 times [2021-10-13 19:42:28,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:28,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203188812] [2021-10-13 19:42:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:28,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:29,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:29,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203188812] [2021-10-13 19:42:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203188812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:29,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122610126] [2021-10-13 19:42:29,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:29,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:29,598 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 19:42:29,618 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 19:42:29,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-13 19:42:29,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 19:42:29,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:30,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122610126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:30,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:30,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-13 19:42:30,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629060037] [2021-10-13 19:42:30,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-13 19:42:30,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-13 19:42:30,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:42:30,086 INFO L87 Difference]: Start difference. First operand 2772 states and 10736 transitions. Second operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:30,872 INFO L93 Difference]: Finished difference Result 5968 states and 23320 transitions. [2021-10-13 19:42:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 19:42:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-10-13 19:42:30,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:30,891 INFO L225 Difference]: With dead ends: 5968 [2021-10-13 19:42:30,891 INFO L226 Difference]: Without dead ends: 5128 [2021-10-13 19:42:30,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 692.1ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 19:42:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2021-10-13 19:42:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 2832. [2021-10-13 19:42:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2817 states have (on average 3.893503727369542) internal successors, (10968), 2831 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 10968 transitions. [2021-10-13 19:42:30,971 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 10968 transitions. Word has length 44 [2021-10-13 19:42:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:30,971 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 10968 transitions. [2021-10-13 19:42:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 10968 transitions. [2021-10-13 19:42:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 19:42:30,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:30,977 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2021-10-13 19:42:31,003 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 19:42:31,177 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,SelfDestructingSolverStorable58 [2021-10-13 19:42:31,178 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1421892468, now seen corresponding path program 42 times [2021-10-13 19:42:31,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:31,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197810772] [2021-10-13 19:42:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:31,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:32,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:32,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197810772] [2021-10-13 19:42:32,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197810772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:32,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040774965] [2021-10-13 19:42:32,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:42:32,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:32,027 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 19:42:32,028 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 19:42:32,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-13 19:42:32,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:32,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:42:32,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:32,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040774965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:32,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:32,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-13 19:42:32,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921498692] [2021-10-13 19:42:32,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 19:42:32,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 19:42:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:42:32,548 INFO L87 Difference]: Start difference. First operand 2832 states and 10968 transitions. Second operand has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:33,343 INFO L93 Difference]: Finished difference Result 6104 states and 23853 transitions. [2021-10-13 19:42:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 19:42:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 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 45 [2021-10-13 19:42:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:33,360 INFO L225 Difference]: With dead ends: 6104 [2021-10-13 19:42:33,360 INFO L226 Difference]: Without dead ends: 5244 [2021-10-13 19:42:33,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 732.9ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:42:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-10-13 19:42:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 2892. [2021-10-13 19:42:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2877 states have (on average 3.8929440389294405) internal successors, (11200), 2891 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 11200 transitions. [2021-10-13 19:42:33,426 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 11200 transitions. Word has length 45 [2021-10-13 19:42:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:33,427 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 11200 transitions. [2021-10-13 19:42:33,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 11200 transitions. [2021-10-13 19:42:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 19:42:33,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:33,433 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2021-10-13 19:42:33,463 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 19:42:33,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:33,649 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:33,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1128993087, now seen corresponding path program 43 times [2021-10-13 19:42:33,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:33,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642093931] [2021-10-13 19:42:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:33,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:34,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:34,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642093931] [2021-10-13 19:42:34,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642093931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:34,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938589747] [2021-10-13 19:42:34,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:34,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:34,494 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 19:42:34,495 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 19:42:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:34,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-13 19:42:34,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:35,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938589747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:35,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:35,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-13 19:42:35,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621590224] [2021-10-13 19:42:35,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 19:42:35,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 19:42:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:42:35,007 INFO L87 Difference]: Start difference. First operand 2892 states and 11200 transitions. Second operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:35,887 INFO L93 Difference]: Finished difference Result 6240 states and 24386 transitions. [2021-10-13 19:42:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 19:42:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 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 46 [2021-10-13 19:42:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:35,904 INFO L225 Difference]: With dead ends: 6240 [2021-10-13 19:42:35,905 INFO L226 Difference]: Without dead ends: 5360 [2021-10-13 19:42:35,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 734.7ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:42:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-10-13 19:42:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2952. [2021-10-13 19:42:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2937 states have (on average 3.892407218249915) internal successors, (11432), 2951 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 11432 transitions. [2021-10-13 19:42:35,977 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 11432 transitions. Word has length 46 [2021-10-13 19:42:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:35,977 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 11432 transitions. [2021-10-13 19:42:35,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 11432 transitions. [2021-10-13 19:42:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 19:42:35,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:35,983 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2021-10-13 19:42:36,018 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 19:42:36,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:36,198 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash -639046868, now seen corresponding path program 44 times [2021-10-13 19:42:36,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:36,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219235349] [2021-10-13 19:42:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:36,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:37,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:37,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219235349] [2021-10-13 19:42:37,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219235349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:37,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553488512] [2021-10-13 19:42:37,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:37,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:37,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:37,136 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 19:42:37,137 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 19:42:37,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:37,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:37,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 19:42:37,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:37,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553488512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:37,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:37,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-13 19:42:37,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047235126] [2021-10-13 19:42:37,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 19:42:37,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 19:42:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:42:37,687 INFO L87 Difference]: Start difference. First operand 2952 states and 11432 transitions. Second operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:38,609 INFO L93 Difference]: Finished difference Result 6376 states and 24919 transitions. [2021-10-13 19:42:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 19:42:38,609 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 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 47 [2021-10-13 19:42:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:38,631 INFO L225 Difference]: With dead ends: 6376 [2021-10-13 19:42:38,631 INFO L226 Difference]: Without dead ends: 5476 [2021-10-13 19:42:38,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 807.8ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:42:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-10-13 19:42:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3012. [2021-10-13 19:42:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2997 states have (on average 3.891891891891892) internal successors, (11664), 3011 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 11664 transitions. [2021-10-13 19:42:38,715 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 11664 transitions. Word has length 47 [2021-10-13 19:42:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:38,716 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 11664 transitions. [2021-10-13 19:42:38,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 11664 transitions. [2021-10-13 19:42:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 19:42:38,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:38,722 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2021-10-13 19:42:38,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-13 19:42:38,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:38,923 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:38,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1664384033, now seen corresponding path program 45 times [2021-10-13 19:42:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:38,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107154259] [2021-10-13 19:42:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:38,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:39,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:39,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107154259] [2021-10-13 19:42:39,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107154259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:39,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629978346] [2021-10-13 19:42:39,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:39,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:39,868 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 19:42:39,869 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 19:42:40,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-13 19:42:40,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:40,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 19:42:40,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:40,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629978346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:40,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:40,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-13 19:42:40,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833762925] [2021-10-13 19:42:40,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-13 19:42:40,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-13 19:42:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:42:40,485 INFO L87 Difference]: Start difference. First operand 3012 states and 11664 transitions. Second operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:41,397 INFO L93 Difference]: Finished difference Result 6512 states and 25452 transitions. [2021-10-13 19:42:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 19:42:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 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 48 [2021-10-13 19:42:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:41,414 INFO L225 Difference]: With dead ends: 6512 [2021-10-13 19:42:41,414 INFO L226 Difference]: Without dead ends: 5592 [2021-10-13 19:42:41,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 834.4ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:42:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-13 19:42:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 3072. [2021-10-13 19:42:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3057 states have (on average 3.8913967942427217) internal successors, (11896), 3071 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 11896 transitions. [2021-10-13 19:42:41,486 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 11896 transitions. Word has length 48 [2021-10-13 19:42:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:41,486 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 11896 transitions. [2021-10-13 19:42:41,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 11896 transitions. [2021-10-13 19:42:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 19:42:41,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:41,492 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2021-10-13 19:42:41,516 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 19:42:41,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:41,693 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 56297932, now seen corresponding path program 46 times [2021-10-13 19:42:41,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:41,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817364857] [2021-10-13 19:42:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:41,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:42,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:42,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817364857] [2021-10-13 19:42:42,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817364857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:42,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912800510] [2021-10-13 19:42:42,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:42:42,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:42,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:42,680 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 19:42:42,681 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 19:42:43,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:42:43,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:42:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:43,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912800510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:43,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:43,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-13 19:42:43,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209266881] [2021-10-13 19:42:43,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-13 19:42:43,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-13 19:42:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:42:43,259 INFO L87 Difference]: Start difference. First operand 3072 states and 11896 transitions. Second operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:44,313 INFO L93 Difference]: Finished difference Result 6648 states and 25985 transitions. [2021-10-13 19:42:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 19:42:44,313 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 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 49 [2021-10-13 19:42:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:44,332 INFO L225 Difference]: With dead ends: 6648 [2021-10-13 19:42:44,332 INFO L226 Difference]: Without dead ends: 5708 [2021-10-13 19:42:44,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 870.2ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:42:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-10-13 19:42:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 3132. [2021-10-13 19:42:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3117 states have (on average 3.890920757138274) internal successors, (12128), 3131 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 12128 transitions. [2021-10-13 19:42:44,416 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 12128 transitions. Word has length 49 [2021-10-13 19:42:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:44,417 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 12128 transitions. [2021-10-13 19:42:44,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 12128 transitions. [2021-10-13 19:42:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 19:42:44,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:44,424 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2021-10-13 19:42:44,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-13 19:42:44,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:44,626 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:44,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1745236353, now seen corresponding path program 47 times [2021-10-13 19:42:44,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:44,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593649518] [2021-10-13 19:42:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:44,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:45,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:45,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593649518] [2021-10-13 19:42:45,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593649518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:45,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897782805] [2021-10-13 19:42:45,621 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:42:45,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:45,623 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 19:42:45,624 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 19:42:46,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-13 19:42:46,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:46,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 19:42:46,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:46,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897782805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:46,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:46,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-13 19:42:46,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567386953] [2021-10-13 19:42:46,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-13 19:42:46,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-13 19:42:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:42:46,233 INFO L87 Difference]: Start difference. First operand 3132 states and 12128 transitions. Second operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:47,241 INFO L93 Difference]: Finished difference Result 6784 states and 26518 transitions. [2021-10-13 19:42:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 19:42:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 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 50 [2021-10-13 19:42:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:47,261 INFO L225 Difference]: With dead ends: 6784 [2021-10-13 19:42:47,261 INFO L226 Difference]: Without dead ends: 5824 [2021-10-13 19:42:47,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 882.7ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 19:42:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-10-13 19:42:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3192. [2021-10-13 19:42:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3177 states have (on average 3.890462700661001) internal successors, (12360), 3191 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 12360 transitions. [2021-10-13 19:42:47,343 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 12360 transitions. Word has length 50 [2021-10-13 19:42:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:47,343 INFO L470 AbstractCegarLoop]: Abstraction has 3192 states and 12360 transitions. [2021-10-13 19:42:47,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 12360 transitions. [2021-10-13 19:42:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 19:42:47,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:47,350 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2021-10-13 19:42:47,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-13 19:42:47,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:47,551 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1732247444, now seen corresponding path program 48 times [2021-10-13 19:42:47,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:47,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816532765] [2021-10-13 19:42:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:47,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:48,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:48,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816532765] [2021-10-13 19:42:48,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816532765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:48,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319981487] [2021-10-13 19:42:48,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:42:48,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:48,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:48,637 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 19:42:48,640 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 19:42:49,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-13 19:42:49,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:49,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 19:42:49,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:49,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319981487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:49,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:49,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-13 19:42:49,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724465267] [2021-10-13 19:42:49,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-13 19:42:49,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-13 19:42:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:42:49,247 INFO L87 Difference]: Start difference. First operand 3192 states and 12360 transitions. Second operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:50,366 INFO L93 Difference]: Finished difference Result 6920 states and 27051 transitions. [2021-10-13 19:42:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-13 19:42:50,367 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 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 51 [2021-10-13 19:42:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:50,385 INFO L225 Difference]: With dead ends: 6920 [2021-10-13 19:42:50,385 INFO L226 Difference]: Without dead ends: 5940 [2021-10-13 19:42:50,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 974.0ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:42:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2021-10-13 19:42:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 3252. [2021-10-13 19:42:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3237 states have (on average 3.890021624961384) internal successors, (12592), 3251 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 12592 transitions. [2021-10-13 19:42:50,466 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 12592 transitions. Word has length 51 [2021-10-13 19:42:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:50,466 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 12592 transitions. [2021-10-13 19:42:50,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 12592 transitions. [2021-10-13 19:42:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 19:42:50,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:50,473 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2021-10-13 19:42:50,498 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 19:42:50,674 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,SelfDestructingSolverStorable65 [2021-10-13 19:42:50,674 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2134904545, now seen corresponding path program 49 times [2021-10-13 19:42:50,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:50,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447676042] [2021-10-13 19:42:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:50,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:51,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:51,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447676042] [2021-10-13 19:42:51,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447676042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:51,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107788866] [2021-10-13 19:42:51,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:42:51,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:51,802 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 19:42:51,804 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 19:42:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 19:42:52,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107788866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:52,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:52,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-13 19:42:52,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312245887] [2021-10-13 19:42:52,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-13 19:42:52,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:52,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-13 19:42:52,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 19:42:52,448 INFO L87 Difference]: Start difference. First operand 3252 states and 12592 transitions. Second operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:53,588 INFO L93 Difference]: Finished difference Result 7056 states and 27584 transitions. [2021-10-13 19:42:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 19:42:53,589 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 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 52 [2021-10-13 19:42:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:53,606 INFO L225 Difference]: With dead ends: 7056 [2021-10-13 19:42:53,607 INFO L226 Difference]: Without dead ends: 6056 [2021-10-13 19:42:53,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1004.4ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 19:42:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-13 19:42:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 3312. [2021-10-13 19:42:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 3297 states have (on average 3.889596602972399) internal successors, (12824), 3311 states have internal predecessors, (12824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 12824 transitions. [2021-10-13 19:42:53,686 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 12824 transitions. Word has length 52 [2021-10-13 19:42:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:53,686 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 12824 transitions. [2021-10-13 19:42:53,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 12824 transitions. [2021-10-13 19:42:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 19:42:53,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:53,692 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2021-10-13 19:42:53,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 19:42:53,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:53,895 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1757531916, now seen corresponding path program 50 times [2021-10-13 19:42:53,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:53,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542554983] [2021-10-13 19:42:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:53,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:54,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:54,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542554983] [2021-10-13 19:42:54,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542554983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:54,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314558362] [2021-10-13 19:42:54,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:42:54,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:54,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:54,996 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 19:42:54,997 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 19:42:55,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:42:55,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:42:55,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:55,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314558362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:55,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:55,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-13 19:42:55,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445044366] [2021-10-13 19:42:55,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-13 19:42:55,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-13 19:42:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:42:55,643 INFO L87 Difference]: Start difference. First operand 3312 states and 12824 transitions. Second operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:42:56,838 INFO L93 Difference]: Finished difference Result 7192 states and 28117 transitions. [2021-10-13 19:42:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 19:42:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 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 53 [2021-10-13 19:42:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:42:56,859 INFO L225 Difference]: With dead ends: 7192 [2021-10-13 19:42:56,859 INFO L226 Difference]: Without dead ends: 6172 [2021-10-13 19:42:56,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 987.5ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 19:42:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2021-10-13 19:42:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 3372. [2021-10-13 19:42:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3357 states have (on average 3.8891867739052723) internal successors, (13056), 3371 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 13056 transitions. [2021-10-13 19:42:56,948 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 13056 transitions. Word has length 53 [2021-10-13 19:42:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:42:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 13056 transitions. [2021-10-13 19:42:56,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:42:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 13056 transitions. [2021-10-13 19:42:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 19:42:56,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:42:56,954 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2021-10-13 19:42:56,980 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 19:42:57,155 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,SelfDestructingSolverStorable67 [2021-10-13 19:42:57,155 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:42:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:42:57,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1351084991, now seen corresponding path program 51 times [2021-10-13 19:42:57,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:42:57,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355653141] [2021-10-13 19:42:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:42:57,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:42:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:42:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:58,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:42:58,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355653141] [2021-10-13 19:42:58,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355653141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:58,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875130746] [2021-10-13 19:42:58,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:42:58,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:42:58,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:42:58,354 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 19:42:58,355 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 19:42:58,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-13 19:42:58,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:42:58,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 19:42:58,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:42:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:42:59,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875130746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:42:59,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:42:59,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-13 19:42:59,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796199710] [2021-10-13 19:42:59,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-13 19:42:59,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:42:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-13 19:42:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:42:59,063 INFO L87 Difference]: Start difference. First operand 3372 states and 13056 transitions. Second operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:00,446 INFO L93 Difference]: Finished difference Result 7328 states and 28650 transitions. [2021-10-13 19:43:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 19:43:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 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 54 [2021-10-13 19:43:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:00,468 INFO L225 Difference]: With dead ends: 7328 [2021-10-13 19:43:00,468 INFO L226 Difference]: Without dead ends: 6288 [2021-10-13 19:43:00,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1081.6ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:43:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-13 19:43:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 3432. [2021-10-13 19:43:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 3417 states have (on average 3.8887913374304945) internal successors, (13288), 3431 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 13288 transitions. [2021-10-13 19:43:00,603 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 13288 transitions. Word has length 54 [2021-10-13 19:43:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:00,604 INFO L470 AbstractCegarLoop]: Abstraction has 3432 states and 13288 transitions. [2021-10-13 19:43:00,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 13288 transitions. [2021-10-13 19:43:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 19:43:00,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:00,609 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2021-10-13 19:43:00,633 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 19:43:00,810 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,SelfDestructingSolverStorable68 [2021-10-13 19:43:00,810 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:00,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1066038700, now seen corresponding path program 52 times [2021-10-13 19:43:00,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:00,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130336227] [2021-10-13 19:43:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:00,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:02,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:02,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130336227] [2021-10-13 19:43:02,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130336227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:02,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228144466] [2021-10-13 19:43:02,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:43:02,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:02,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:02,045 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 19:43:02,046 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 19:43:02,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:43:02,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 19:43:02,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:02,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228144466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:02,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:02,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-13 19:43:02,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105879113] [2021-10-13 19:43:02,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-13 19:43:02,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-13 19:43:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:43:02,721 INFO L87 Difference]: Start difference. First operand 3432 states and 13288 transitions. Second operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:04,076 INFO L93 Difference]: Finished difference Result 7464 states and 29183 transitions. [2021-10-13 19:43:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 19:43:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 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 55 [2021-10-13 19:43:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:04,096 INFO L225 Difference]: With dead ends: 7464 [2021-10-13 19:43:04,096 INFO L226 Difference]: Without dead ends: 6404 [2021-10-13 19:43:04,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1111.7ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 19:43:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-13 19:43:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3492. [2021-10-13 19:43:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3477 states have (on average 3.888409548461317) internal successors, (13520), 3491 states have internal predecessors, (13520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 13520 transitions. [2021-10-13 19:43:04,180 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 13520 transitions. Word has length 55 [2021-10-13 19:43:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:04,180 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 13520 transitions. [2021-10-13 19:43:04,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 13520 transitions. [2021-10-13 19:43:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 19:43:04,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:04,186 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2021-10-13 19:43:04,209 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 19:43:04,386 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,SelfDestructingSolverStorable69 [2021-10-13 19:43:04,386 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1312538207, now seen corresponding path program 53 times [2021-10-13 19:43:04,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:04,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496525664] [2021-10-13 19:43:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:04,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:05,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:05,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496525664] [2021-10-13 19:43:05,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496525664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:05,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455962851] [2021-10-13 19:43:05,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:43:05,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:05,639 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 19:43:05,640 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 19:43:06,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-13 19:43:06,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 19:43:06,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:06,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455962851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:06,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:06,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-13 19:43:06,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320923028] [2021-10-13 19:43:06,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-13 19:43:06,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-13 19:43:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:43:06,363 INFO L87 Difference]: Start difference. First operand 3492 states and 13520 transitions. Second operand has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:07,752 INFO L93 Difference]: Finished difference Result 7600 states and 29716 transitions. [2021-10-13 19:43:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 19:43:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 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 56 [2021-10-13 19:43:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:07,773 INFO L225 Difference]: With dead ends: 7600 [2021-10-13 19:43:07,773 INFO L226 Difference]: Without dead ends: 6520 [2021-10-13 19:43:07,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1130.1ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-13 19:43:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-10-13 19:43:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3552. [2021-10-13 19:43:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3537 states have (on average 3.8880407124681935) internal successors, (13752), 3551 states have internal predecessors, (13752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 13752 transitions. [2021-10-13 19:43:07,859 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 13752 transitions. Word has length 56 [2021-10-13 19:43:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:07,860 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 13752 transitions. [2021-10-13 19:43:07,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 13752 transitions. [2021-10-13 19:43:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 19:43:07,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:07,865 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2021-10-13 19:43:07,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:08,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:08,066 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2033978292, now seen corresponding path program 54 times [2021-10-13 19:43:08,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:08,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062172645] [2021-10-13 19:43:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:08,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:09,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:09,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062172645] [2021-10-13 19:43:09,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062172645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:09,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794968715] [2021-10-13 19:43:09,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:43:09,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:09,405 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 19:43:09,406 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 19:43:10,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-13 19:43:10,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:10,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 19:43:10,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:10,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794968715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:10,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-13 19:43:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110116718] [2021-10-13 19:43:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-13 19:43:10,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-13 19:43:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 19:43:10,162 INFO L87 Difference]: Start difference. First operand 3552 states and 13752 transitions. Second operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:11,707 INFO L93 Difference]: Finished difference Result 7736 states and 30249 transitions. [2021-10-13 19:43:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-13 19:43:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 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 57 [2021-10-13 19:43:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:11,785 INFO L225 Difference]: With dead ends: 7736 [2021-10-13 19:43:11,785 INFO L226 Difference]: Without dead ends: 6636 [2021-10-13 19:43:11,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1205.5ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 19:43:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-10-13 19:43:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 3612. [2021-10-13 19:43:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3597 states have (on average 3.8876841812621628) internal successors, (13984), 3611 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 13984 transitions. [2021-10-13 19:43:11,877 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 13984 transitions. Word has length 57 [2021-10-13 19:43:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:11,878 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 13984 transitions. [2021-10-13 19:43:11,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 13984 transitions. [2021-10-13 19:43:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 19:43:11,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:11,884 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2021-10-13 19:43:11,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 19:43:12,084 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,SelfDestructingSolverStorable71 [2021-10-13 19:43:12,085 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1371182849, now seen corresponding path program 55 times [2021-10-13 19:43:12,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:12,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477741262] [2021-10-13 19:43:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:12,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:13,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:13,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477741262] [2021-10-13 19:43:13,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477741262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:13,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053986921] [2021-10-13 19:43:13,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:13,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:13,433 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 19:43:13,455 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 19:43:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:14,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-13 19:43:14,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053986921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:14,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:14,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-13 19:43:14,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432246371] [2021-10-13 19:43:14,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-13 19:43:14,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-13 19:43:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 19:43:14,175 INFO L87 Difference]: Start difference. First operand 3612 states and 13984 transitions. Second operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:15,754 INFO L93 Difference]: Finished difference Result 7872 states and 30782 transitions. [2021-10-13 19:43:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 19:43:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 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 58 [2021-10-13 19:43:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:15,777 INFO L225 Difference]: With dead ends: 7872 [2021-10-13 19:43:15,777 INFO L226 Difference]: Without dead ends: 6752 [2021-10-13 19:43:15,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1216.5ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 19:43:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2021-10-13 19:43:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 3672. [2021-10-13 19:43:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3657 states have (on average 3.887339349193328) internal successors, (14216), 3671 states have internal predecessors, (14216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 14216 transitions. [2021-10-13 19:43:15,870 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 14216 transitions. Word has length 58 [2021-10-13 19:43:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:15,870 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 14216 transitions. [2021-10-13 19:43:15,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 14216 transitions. [2021-10-13 19:43:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 19:43:15,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:15,877 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2021-10-13 19:43:15,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-13 19:43:16,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:16,078 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash -443004180, now seen corresponding path program 56 times [2021-10-13 19:43:16,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:16,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739535606] [2021-10-13 19:43:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:16,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:17,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:17,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739535606] [2021-10-13 19:43:17,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739535606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:17,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346792662] [2021-10-13 19:43:17,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:43:17,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:17,498 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 19:43:17,503 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 19:43:18,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:43:18,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:18,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 19:43:18,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:18,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346792662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:18,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:18,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-13 19:43:18,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445672778] [2021-10-13 19:43:18,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-13 19:43:18,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:18,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-13 19:43:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 19:43:18,260 INFO L87 Difference]: Start difference. First operand 3672 states and 14216 transitions. Second operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:19,860 INFO L93 Difference]: Finished difference Result 8008 states and 31315 transitions. [2021-10-13 19:43:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-13 19:43:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 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 59 [2021-10-13 19:43:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:19,883 INFO L225 Difference]: With dead ends: 8008 [2021-10-13 19:43:19,883 INFO L226 Difference]: Without dead ends: 6868 [2021-10-13 19:43:19,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1286.4ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 19:43:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-10-13 19:43:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 3732. [2021-10-13 19:43:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3717 states have (on average 3.8870056497175143) internal successors, (14448), 3731 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 14448 transitions. [2021-10-13 19:43:19,973 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 14448 transitions. Word has length 59 [2021-10-13 19:43:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:19,973 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 14448 transitions. [2021-10-13 19:43:19,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 14448 transitions. [2021-10-13 19:43:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 19:43:19,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:19,979 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2021-10-13 19:43:20,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-13 19:43:20,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:20,180 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:20,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:20,181 INFO L82 PathProgramCache]: Analyzing trace with hash -848227231, now seen corresponding path program 57 times [2021-10-13 19:43:20,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:20,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900336567] [2021-10-13 19:43:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:20,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:21,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:21,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900336567] [2021-10-13 19:43:21,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900336567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:21,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173929708] [2021-10-13 19:43:21,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:43:21,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:21,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:21,638 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 19:43:21,641 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 19:43:22,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-13 19:43:22,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-13 19:43:22,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173929708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:22,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:22,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-13 19:43:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981579530] [2021-10-13 19:43:22,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-13 19:43:22,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-13 19:43:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 19:43:22,479 INFO L87 Difference]: Start difference. First operand 3732 states and 14448 transitions. Second operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:24,315 INFO L93 Difference]: Finished difference Result 8144 states and 31848 transitions. [2021-10-13 19:43:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 19:43:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 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 60 [2021-10-13 19:43:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:24,337 INFO L225 Difference]: With dead ends: 8144 [2021-10-13 19:43:24,337 INFO L226 Difference]: Without dead ends: 6984 [2021-10-13 19:43:24,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1332.0ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 19:43:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2021-10-13 19:43:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 3792. [2021-10-13 19:43:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3777 states have (on average 3.8866825522901776) internal successors, (14680), 3791 states have internal predecessors, (14680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 14680 transitions. [2021-10-13 19:43:24,426 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 14680 transitions. Word has length 60 [2021-10-13 19:43:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:24,426 INFO L470 AbstractCegarLoop]: Abstraction has 3792 states and 14680 transitions. [2021-10-13 19:43:24,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 14680 transitions. [2021-10-13 19:43:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 19:43:24,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:24,432 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2021-10-13 19:43:24,457 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 19:43:24,633 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,SelfDestructingSolverStorable74 [2021-10-13 19:43:24,633 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -525239924, now seen corresponding path program 58 times [2021-10-13 19:43:24,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:24,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607475776] [2021-10-13 19:43:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:24,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:26,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:26,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607475776] [2021-10-13 19:43:26,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607475776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:26,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708052644] [2021-10-13 19:43:26,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:43:26,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:26,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:26,195 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 19:43:26,196 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 19:43:26,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:43:26,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:26,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-13 19:43:26,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:26,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708052644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:26,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:26,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-13 19:43:26,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394229229] [2021-10-13 19:43:26,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-13 19:43:26,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-13 19:43:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 19:43:26,983 INFO L87 Difference]: Start difference. First operand 3792 states and 14680 transitions. Second operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:28,942 INFO L93 Difference]: Finished difference Result 8280 states and 32381 transitions. [2021-10-13 19:43:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 19:43:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 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 61 [2021-10-13 19:43:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:28,967 INFO L225 Difference]: With dead ends: 8280 [2021-10-13 19:43:28,967 INFO L226 Difference]: Without dead ends: 7100 [2021-10-13 19:43:28,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1377.6ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 19:43:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-13 19:43:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 3852. [2021-10-13 19:43:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3837 states have (on average 3.886369559551733) internal successors, (14912), 3851 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 14912 transitions. [2021-10-13 19:43:29,066 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 14912 transitions. Word has length 61 [2021-10-13 19:43:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:29,067 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 14912 transitions. [2021-10-13 19:43:29,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 14912 transitions. [2021-10-13 19:43:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 19:43:29,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:29,074 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2021-10-13 19:43:29,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:29,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:29,274 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash 897432001, now seen corresponding path program 59 times [2021-10-13 19:43:29,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:29,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752804205] [2021-10-13 19:43:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:29,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:30,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:30,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752804205] [2021-10-13 19:43:30,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752804205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:30,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314136747] [2021-10-13 19:43:30,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:43:30,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:30,850 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 19:43:30,852 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 19:43:31,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-13 19:43:31,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:31,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-13 19:43:31,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:31,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314136747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:31,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:31,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-13 19:43:31,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112662318] [2021-10-13 19:43:31,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-13 19:43:31,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-13 19:43:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 19:43:31,685 INFO L87 Difference]: Start difference. First operand 3852 states and 14912 transitions. Second operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:33,470 INFO L93 Difference]: Finished difference Result 8416 states and 32914 transitions. [2021-10-13 19:43:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 19:43:33,470 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 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 62 [2021-10-13 19:43:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:33,494 INFO L225 Difference]: With dead ends: 8416 [2021-10-13 19:43:33,494 INFO L226 Difference]: Without dead ends: 7216 [2021-10-13 19:43:33,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1431.9ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 19:43:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-10-13 19:43:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 3912. [2021-10-13 19:43:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3897 states have (on average 3.886066204772902) internal successors, (15144), 3911 states have internal predecessors, (15144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 15144 transitions. [2021-10-13 19:43:33,593 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 15144 transitions. Word has length 62 [2021-10-13 19:43:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 15144 transitions. [2021-10-13 19:43:33,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 15144 transitions. [2021-10-13 19:43:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 19:43:33,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:33,601 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2021-10-13 19:43:33,627 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 19:43:33,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-10-13 19:43:33,802 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2050588716, now seen corresponding path program 60 times [2021-10-13 19:43:33,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:33,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345097646] [2021-10-13 19:43:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:33,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:35,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:35,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345097646] [2021-10-13 19:43:35,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345097646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:35,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340674695] [2021-10-13 19:43:35,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:43:35,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:35,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:35,425 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 19:43:35,426 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 19:43:36,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-13 19:43:36,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:36,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 19:43:36,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:36,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340674695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:36,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:36,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-13 19:43:36,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514541963] [2021-10-13 19:43:36,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 19:43:36,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 19:43:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 19:43:36,329 INFO L87 Difference]: Start difference. First operand 3912 states and 15144 transitions. Second operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:38,310 INFO L93 Difference]: Finished difference Result 8552 states and 33447 transitions. [2021-10-13 19:43:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 19:43:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 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 63 [2021-10-13 19:43:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:38,333 INFO L225 Difference]: With dead ends: 8552 [2021-10-13 19:43:38,333 INFO L226 Difference]: Without dead ends: 7332 [2021-10-13 19:43:38,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1495.6ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 19:43:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-13 19:43:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 3972. [2021-10-13 19:43:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3957 states have (on average 3.885772049532474) internal successors, (15376), 3971 states have internal predecessors, (15376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 15376 transitions. [2021-10-13 19:43:38,425 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 15376 transitions. Word has length 63 [2021-10-13 19:43:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:38,425 INFO L470 AbstractCegarLoop]: Abstraction has 3972 states and 15376 transitions. [2021-10-13 19:43:38,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 15376 transitions. [2021-10-13 19:43:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 19:43:38,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:38,432 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2021-10-13 19:43:38,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-13 19:43:38,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:38,633 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash -856258783, now seen corresponding path program 61 times [2021-10-13 19:43:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:38,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908152692] [2021-10-13 19:43:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:38,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:40,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:40,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908152692] [2021-10-13 19:43:40,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908152692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:40,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508668765] [2021-10-13 19:43:40,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:43:40,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:40,309 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 19:43:40,310 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 19:43:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:41,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 19:43:41,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:41,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508668765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:41,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:41,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-13 19:43:41,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258723588] [2021-10-13 19:43:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-13 19:43:41,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-13 19:43:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 19:43:41,153 INFO L87 Difference]: Start difference. First operand 3972 states and 15376 transitions. Second operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:43,057 INFO L93 Difference]: Finished difference Result 8688 states and 33980 transitions. [2021-10-13 19:43:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 19:43:43,057 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 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 64 [2021-10-13 19:43:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:43,083 INFO L225 Difference]: With dead ends: 8688 [2021-10-13 19:43:43,083 INFO L226 Difference]: Without dead ends: 7448 [2021-10-13 19:43:43,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1534.6ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 19:43:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-10-13 19:43:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 4032. [2021-10-13 19:43:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4017 states have (on average 3.8854866816031866) internal successors, (15608), 4031 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 15608 transitions. [2021-10-13 19:43:43,244 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 15608 transitions. Word has length 64 [2021-10-13 19:43:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:43,244 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 15608 transitions. [2021-10-13 19:43:43,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 15608 transitions. [2021-10-13 19:43:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 19:43:43,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:43,253 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2021-10-13 19:43:43,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-13 19:43:43,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-13 19:43:43,454 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:43,454 INFO L82 PathProgramCache]: Analyzing trace with hash -774218036, now seen corresponding path program 62 times [2021-10-13 19:43:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:43,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609753066] [2021-10-13 19:43:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:43,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:45,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:45,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609753066] [2021-10-13 19:43:45,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609753066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:45,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551250111] [2021-10-13 19:43:45,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:43:45,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:45,196 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 19:43:45,196 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 19:43:45,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:43:45,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:45,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 19:43:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:46,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551250111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:46,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:46,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-13 19:43:46,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044167197] [2021-10-13 19:43:46,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-13 19:43:46,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-13 19:43:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 19:43:46,059 INFO L87 Difference]: Start difference. First operand 4032 states and 15608 transitions. Second operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:48,247 INFO L93 Difference]: Finished difference Result 8824 states and 34513 transitions. [2021-10-13 19:43:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-13 19:43:48,247 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 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 65 [2021-10-13 19:43:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:48,271 INFO L225 Difference]: With dead ends: 8824 [2021-10-13 19:43:48,271 INFO L226 Difference]: Without dead ends: 7564 [2021-10-13 19:43:48,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1585.3ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 19:43:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2021-10-13 19:43:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 4092. [2021-10-13 19:43:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4077 states have (on average 3.8852097130242824) internal successors, (15840), 4091 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 15840 transitions. [2021-10-13 19:43:48,378 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 15840 transitions. Word has length 65 [2021-10-13 19:43:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:48,379 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 15840 transitions. [2021-10-13 19:43:48,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 15840 transitions. [2021-10-13 19:43:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 19:43:48,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:48,389 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2021-10-13 19:43:48,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-13 19:43:48,602 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,SelfDestructingSolverStorable79 [2021-10-13 19:43:48,602 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1769045121, now seen corresponding path program 63 times [2021-10-13 19:43:48,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:48,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212329830] [2021-10-13 19:43:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:48,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:50,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:50,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212329830] [2021-10-13 19:43:50,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212329830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:50,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591018085] [2021-10-13 19:43:50,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:43:50,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:50,391 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 19:43:50,393 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 19:43:51,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-13 19:43:51,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:43:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:51,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591018085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:51,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:51,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-13 19:43:51,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620378980] [2021-10-13 19:43:51,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-13 19:43:51,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-13 19:43:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 19:43:51,381 INFO L87 Difference]: Start difference. First operand 4092 states and 15840 transitions. Second operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:53,688 INFO L93 Difference]: Finished difference Result 8960 states and 35046 transitions. [2021-10-13 19:43:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 19:43:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 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 66 [2021-10-13 19:43:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:53,713 INFO L225 Difference]: With dead ends: 8960 [2021-10-13 19:43:53,714 INFO L226 Difference]: Without dead ends: 7680 [2021-10-13 19:43:53,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1654.1ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 19:43:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2021-10-13 19:43:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 4152. [2021-10-13 19:43:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4137 states have (on average 3.8849407783417935) internal successors, (16072), 4151 states have internal predecessors, (16072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 16072 transitions. [2021-10-13 19:43:53,829 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 16072 transitions. Word has length 66 [2021-10-13 19:43:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:53,829 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 16072 transitions. [2021-10-13 19:43:53,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 16072 transitions. [2021-10-13 19:43:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 19:43:53,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:53,840 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2021-10-13 19:43:53,883 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 19:43:54,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:54,054 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash -994175636, now seen corresponding path program 64 times [2021-10-13 19:43:54,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:54,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252717345] [2021-10-13 19:43:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:54,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:43:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:55,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:43:55,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252717345] [2021-10-13 19:43:55,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252717345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:55,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948814512] [2021-10-13 19:43:55,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:43:55,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:55,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:43:55,875 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 19:43:55,876 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 19:43:56,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:43:56,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:43:56,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 19:43:56,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:43:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:43:56,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948814512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:43:56,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:43:56,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-13 19:43:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686501635] [2021-10-13 19:43:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-13 19:43:56,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:43:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-13 19:43:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 19:43:56,812 INFO L87 Difference]: Start difference. First operand 4152 states and 16072 transitions. Second operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:43:59,339 INFO L93 Difference]: Finished difference Result 9096 states and 35579 transitions. [2021-10-13 19:43:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-13 19:43:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 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 67 [2021-10-13 19:43:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:43:59,367 INFO L225 Difference]: With dead ends: 9096 [2021-10-13 19:43:59,367 INFO L226 Difference]: Without dead ends: 7796 [2021-10-13 19:43:59,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1676.6ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 19:43:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-10-13 19:43:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 4212. [2021-10-13 19:43:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4197 states have (on average 3.884679532999762) internal successors, (16304), 4211 states have internal predecessors, (16304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 16304 transitions. [2021-10-13 19:43:59,474 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 16304 transitions. Word has length 67 [2021-10-13 19:43:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:43:59,475 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 16304 transitions. [2021-10-13 19:43:59,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:43:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 16304 transitions. [2021-10-13 19:43:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 19:43:59,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:43:59,484 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2021-10-13 19:43:59,523 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 19:43:59,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:43:59,700 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:43:59,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:43:59,700 INFO L82 PathProgramCache]: Analyzing trace with hash -754673183, now seen corresponding path program 65 times [2021-10-13 19:43:59,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:43:59,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699207533] [2021-10-13 19:43:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:43:59,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:43:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:01,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:01,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699207533] [2021-10-13 19:44:01,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699207533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:01,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399974950] [2021-10-13 19:44:01,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:44:01,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:01,593 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 19:44:01,601 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 19:44:02,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-13 19:44:02,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 19:44:02,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:02,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399974950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:02,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:02,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-13 19:44:02,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569471470] [2021-10-13 19:44:02,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-13 19:44:02,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-13 19:44:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 19:44:02,560 INFO L87 Difference]: Start difference. First operand 4212 states and 16304 transitions. Second operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:04,861 INFO L93 Difference]: Finished difference Result 9232 states and 36112 transitions. [2021-10-13 19:44:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-13 19:44:04,861 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 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 68 [2021-10-13 19:44:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:04,887 INFO L225 Difference]: With dead ends: 9232 [2021-10-13 19:44:04,887 INFO L226 Difference]: Without dead ends: 7912 [2021-10-13 19:44:04,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1750.7ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 19:44:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-10-13 19:44:04,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4272. [2021-10-13 19:44:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4257 states have (on average 3.884425651867512) internal successors, (16536), 4271 states have internal predecessors, (16536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 16536 transitions. [2021-10-13 19:44:05,008 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 16536 transitions. Word has length 68 [2021-10-13 19:44:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:05,009 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 16536 transitions. [2021-10-13 19:44:05,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 16536 transitions. [2021-10-13 19:44:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 19:44:05,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:05,018 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2021-10-13 19:44:05,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-13 19:44:05,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-10-13 19:44:05,219 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1920031732, now seen corresponding path program 66 times [2021-10-13 19:44:05,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:05,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441549589] [2021-10-13 19:44:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:05,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:07,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:07,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441549589] [2021-10-13 19:44:07,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441549589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:07,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546444080] [2021-10-13 19:44:07,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:44:07,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:07,217 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 19:44:07,218 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 19:44:08,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-13 19:44:08,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:08,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-13 19:44:08,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:08,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546444080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:08,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:08,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-13 19:44:08,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455694814] [2021-10-13 19:44:08,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-13 19:44:08,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-13 19:44:08,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 19:44:08,266 INFO L87 Difference]: Start difference. First operand 4272 states and 16536 transitions. Second operand has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:11,118 INFO L93 Difference]: Finished difference Result 9368 states and 36645 transitions. [2021-10-13 19:44:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-13 19:44:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 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 69 [2021-10-13 19:44:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:11,155 INFO L225 Difference]: With dead ends: 9368 [2021-10-13 19:44:11,156 INFO L226 Difference]: Without dead ends: 8028 [2021-10-13 19:44:11,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1854.5ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 19:44:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-10-13 19:44:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4332. [2021-10-13 19:44:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4317 states have (on average 3.8841788278897385) internal successors, (16768), 4331 states have internal predecessors, (16768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 16768 transitions. [2021-10-13 19:44:11,311 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 16768 transitions. Word has length 69 [2021-10-13 19:44:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:11,311 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 16768 transitions. [2021-10-13 19:44:11,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 16768 transitions. [2021-10-13 19:44:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 19:44:11,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:11,321 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2021-10-13 19:44:11,348 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 19:44:11,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:11,531 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash 608558913, now seen corresponding path program 67 times [2021-10-13 19:44:11,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:11,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680693603] [2021-10-13 19:44:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:11,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:13,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:13,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680693603] [2021-10-13 19:44:13,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680693603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:13,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57975587] [2021-10-13 19:44:13,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:44:13,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:13,748 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 19:44:13,754 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 19:44:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-13 19:44:14,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:14,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57975587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:14,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:14,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-13 19:44:14,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689382872] [2021-10-13 19:44:14,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-13 19:44:14,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-13 19:44:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 19:44:14,832 INFO L87 Difference]: Start difference. First operand 4332 states and 16768 transitions. Second operand has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:18,082 INFO L93 Difference]: Finished difference Result 9504 states and 37178 transitions. [2021-10-13 19:44:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 19:44:18,082 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 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 70 [2021-10-13 19:44:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:18,118 INFO L225 Difference]: With dead ends: 9504 [2021-10-13 19:44:18,119 INFO L226 Difference]: Without dead ends: 8144 [2021-10-13 19:44:18,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2044.4ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 19:44:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-10-13 19:44:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 4392. [2021-10-13 19:44:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4377 states have (on average 3.8839387708476125) internal successors, (17000), 4391 states have internal predecessors, (17000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 17000 transitions. [2021-10-13 19:44:18,301 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 17000 transitions. Word has length 70 [2021-10-13 19:44:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:18,302 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 17000 transitions. [2021-10-13 19:44:18,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 17000 transitions. [2021-10-13 19:44:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 19:44:18,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:18,315 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2021-10-13 19:44:18,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-13 19:44:18,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:18,528 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:18,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1685457580, now seen corresponding path program 68 times [2021-10-13 19:44:18,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:18,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309698640] [2021-10-13 19:44:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:18,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:20,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:20,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309698640] [2021-10-13 19:44:20,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309698640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:20,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685135969] [2021-10-13 19:44:20,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:20,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:20,732 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 19:44:20,734 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 19:44:21,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:44:21,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:21,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-13 19:44:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685135969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:21,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:21,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-13 19:44:21,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363038963] [2021-10-13 19:44:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-13 19:44:21,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-13 19:44:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 19:44:21,770 INFO L87 Difference]: Start difference. First operand 4392 states and 17000 transitions. Second operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:24,862 INFO L93 Difference]: Finished difference Result 9640 states and 37711 transitions. [2021-10-13 19:44:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-13 19:44:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 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 71 [2021-10-13 19:44:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:24,902 INFO L225 Difference]: With dead ends: 9640 [2021-10-13 19:44:24,902 INFO L226 Difference]: Without dead ends: 8260 [2021-10-13 19:44:24,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2046.2ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 19:44:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2021-10-13 19:44:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 4452. [2021-10-13 19:44:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4437 states have (on average 3.8837052062204194) internal successors, (17232), 4451 states have internal predecessors, (17232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 17232 transitions. [2021-10-13 19:44:25,187 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 17232 transitions. Word has length 71 [2021-10-13 19:44:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:25,188 INFO L470 AbstractCegarLoop]: Abstraction has 4452 states and 17232 transitions. [2021-10-13 19:44:25,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 17232 transitions. [2021-10-13 19:44:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 19:44:25,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:25,197 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2021-10-13 19:44:25,225 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 19:44:25,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:25,398 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash 709577889, now seen corresponding path program 69 times [2021-10-13 19:44:25,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:25,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753338050] [2021-10-13 19:44:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:25,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:27,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:27,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753338050] [2021-10-13 19:44:27,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753338050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:27,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277286034] [2021-10-13 19:44:27,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:44:27,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:27,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:27,688 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 19:44:27,689 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 19:44:28,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-13 19:44:28,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 19:44:28,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:28,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277286034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:28,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:28,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-13 19:44:28,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132312969] [2021-10-13 19:44:28,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-13 19:44:28,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-13 19:44:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-13 19:44:28,870 INFO L87 Difference]: Start difference. First operand 4452 states and 17232 transitions. Second operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:32,108 INFO L93 Difference]: Finished difference Result 9776 states and 38244 transitions. [2021-10-13 19:44:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-13 19:44:32,109 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 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 72 [2021-10-13 19:44:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:32,150 INFO L225 Difference]: With dead ends: 9776 [2021-10-13 19:44:32,150 INFO L226 Difference]: Without dead ends: 8376 [2021-10-13 19:44:32,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2104.7ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-13 19:44:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2021-10-13 19:44:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 4512. [2021-10-13 19:44:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4497 states have (on average 3.8834778741383142) internal successors, (17464), 4511 states have internal predecessors, (17464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 17464 transitions. [2021-10-13 19:44:32,307 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 17464 transitions. Word has length 72 [2021-10-13 19:44:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:32,307 INFO L470 AbstractCegarLoop]: Abstraction has 4512 states and 17464 transitions. [2021-10-13 19:44:32,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 17464 transitions. [2021-10-13 19:44:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 19:44:32,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:32,315 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2021-10-13 19:44:32,342 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 19:44:32,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:32,517 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 522078540, now seen corresponding path program 70 times [2021-10-13 19:44:32,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:32,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665809790] [2021-10-13 19:44:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:32,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:34,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:34,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665809790] [2021-10-13 19:44:34,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665809790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:34,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106437194] [2021-10-13 19:44:34,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:44:34,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:34,830 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 19:44:34,832 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 19:44:35,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:44:35,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-13 19:44:35,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:35,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106437194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:35,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:35,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-13 19:44:35,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860524896] [2021-10-13 19:44:35,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-13 19:44:35,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-13 19:44:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 19:44:35,937 INFO L87 Difference]: Start difference. First operand 4512 states and 17464 transitions. Second operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:39,026 INFO L93 Difference]: Finished difference Result 9912 states and 38777 transitions. [2021-10-13 19:44:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-13 19:44:39,026 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 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 73 [2021-10-13 19:44:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:39,056 INFO L225 Difference]: With dead ends: 9912 [2021-10-13 19:44:39,056 INFO L226 Difference]: Without dead ends: 8492 [2021-10-13 19:44:39,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2153.0ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 19:44:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-10-13 19:44:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4572. [2021-10-13 19:44:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4557 states have (on average 3.8832565284178187) internal successors, (17696), 4571 states have internal predecessors, (17696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 17696 transitions. [2021-10-13 19:44:39,185 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 17696 transitions. Word has length 73 [2021-10-13 19:44:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:39,185 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 17696 transitions. [2021-10-13 19:44:39,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 17696 transitions. [2021-10-13 19:44:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 19:44:39,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:39,193 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2021-10-13 19:44:39,220 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 19:44:39,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:39,394 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash -995433983, now seen corresponding path program 71 times [2021-10-13 19:44:39,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:39,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770845722] [2021-10-13 19:44:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:39,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:41,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:41,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770845722] [2021-10-13 19:44:41,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770845722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:41,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575936991] [2021-10-13 19:44:41,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:44:41,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:41,811 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 19:44:41,813 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 19:44:42,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-13 19:44:42,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:42,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-13 19:44:42,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:42,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575936991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:42,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:42,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-13 19:44:42,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975158037] [2021-10-13 19:44:42,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-13 19:44:42,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-13 19:44:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 19:44:42,968 INFO L87 Difference]: Start difference. First operand 4572 states and 17696 transitions. Second operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:46,860 INFO L93 Difference]: Finished difference Result 10048 states and 39310 transitions. [2021-10-13 19:44:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-13 19:44:46,860 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 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 74 [2021-10-13 19:44:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:46,891 INFO L225 Difference]: With dead ends: 10048 [2021-10-13 19:44:46,892 INFO L226 Difference]: Without dead ends: 8608 [2021-10-13 19:44:46,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2256.9ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 19:44:46,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2021-10-13 19:44:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 4632. [2021-10-13 19:44:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4617 states have (on average 3.8830409356725144) internal successors, (17928), 4631 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 17928 transitions. [2021-10-13 19:44:47,028 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 17928 transitions. Word has length 74 [2021-10-13 19:44:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:47,028 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 17928 transitions. [2021-10-13 19:44:47,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 17928 transitions. [2021-10-13 19:44:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 19:44:47,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:47,040 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2021-10-13 19:44:47,074 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 19:44:47,245 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,SelfDestructingSolverStorable88 [2021-10-13 19:44:47,246 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash -793681940, now seen corresponding path program 72 times [2021-10-13 19:44:47,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:47,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129610418] [2021-10-13 19:44:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:47,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:49,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:49,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129610418] [2021-10-13 19:44:49,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129610418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:49,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68206388] [2021-10-13 19:44:49,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:44:49,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:49,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:49,721 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 19:44:49,722 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 19:44:50,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-13 19:44:50,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:50,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-13 19:44:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68206388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:50,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-13 19:44:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886115853] [2021-10-13 19:44:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-13 19:44:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-13 19:44:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 19:44:50,991 INFO L87 Difference]: Start difference. First operand 4632 states and 17928 transitions. Second operand has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:55,299 INFO L93 Difference]: Finished difference Result 10184 states and 39843 transitions. [2021-10-13 19:44:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-13 19:44:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 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 75 [2021-10-13 19:44:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:55,329 INFO L225 Difference]: With dead ends: 10184 [2021-10-13 19:44:55,329 INFO L226 Difference]: Without dead ends: 8724 [2021-10-13 19:44:55,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2266.8ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 19:44:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2021-10-13 19:44:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 4692. [2021-10-13 19:44:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4677 states have (on average 3.8828308744921958) internal successors, (18160), 4691 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 18160 transitions. [2021-10-13 19:44:55,452 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 18160 transitions. Word has length 75 [2021-10-13 19:44:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:55,452 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 18160 transitions. [2021-10-13 19:44:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 18160 transitions. [2021-10-13 19:44:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-13 19:44:55,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:55,460 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2021-10-13 19:44:55,488 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 19:44:55,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:55,661 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:44:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1165664097, now seen corresponding path program 73 times [2021-10-13 19:44:55,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777310216] [2021-10-13 19:44:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:58,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:58,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777310216] [2021-10-13 19:44:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777310216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465973763] [2021-10-13 19:44:58,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:44:58,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:58,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:58,154 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 19:44:58,155 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 19:44:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:59,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 19:44:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:59,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465973763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:59,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:59,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-13 19:44:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035054933] [2021-10-13 19:44:59,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-13 19:44:59,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-13 19:44:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 19:44:59,283 INFO L87 Difference]: Start difference. First operand 4692 states and 18160 transitions. Second operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:02,935 INFO L93 Difference]: Finished difference Result 10320 states and 40376 transitions. [2021-10-13 19:45:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-13 19:45:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 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 76 [2021-10-13 19:45:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:02,975 INFO L225 Difference]: With dead ends: 10320 [2021-10-13 19:45:02,975 INFO L226 Difference]: Without dead ends: 8840 [2021-10-13 19:45:02,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2331.7ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-13 19:45:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-10-13 19:45:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 4752. [2021-10-13 19:45:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4737 states have (on average 3.8826261346843993) internal successors, (18392), 4751 states have internal predecessors, (18392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 18392 transitions. [2021-10-13 19:45:03,135 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 18392 transitions. Word has length 76 [2021-10-13 19:45:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:03,136 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 18392 transitions. [2021-10-13 19:45:03,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 18392 transitions. [2021-10-13 19:45:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 19:45:03,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:03,144 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2021-10-13 19:45:03,178 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 19:45:03,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:03,345 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1775849100, now seen corresponding path program 74 times [2021-10-13 19:45:03,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:03,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026132084] [2021-10-13 19:45:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:03,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:06,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:06,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026132084] [2021-10-13 19:45:06,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026132084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:06,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081727126] [2021-10-13 19:45:06,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:06,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:06,218 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 19:45:06,219 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 19:45:07,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:07,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:07,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-13 19:45:07,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:07,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081727126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:07,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:07,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-13 19:45:07,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063851564] [2021-10-13 19:45:07,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-13 19:45:07,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:07,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-13 19:45:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 19:45:07,417 INFO L87 Difference]: Start difference. First operand 4752 states and 18392 transitions. Second operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:11,256 INFO L93 Difference]: Finished difference Result 10456 states and 40909 transitions. [2021-10-13 19:45:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-13 19:45:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 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 77 [2021-10-13 19:45:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:11,287 INFO L225 Difference]: With dead ends: 10456 [2021-10-13 19:45:11,287 INFO L226 Difference]: Without dead ends: 8956 [2021-10-13 19:45:11,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2684.8ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 19:45:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2021-10-13 19:45:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4812. [2021-10-13 19:45:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4797 states have (on average 3.882426516572858) internal successors, (18624), 4811 states have internal predecessors, (18624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 18624 transitions. [2021-10-13 19:45:11,408 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 18624 transitions. Word has length 77 [2021-10-13 19:45:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:11,408 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 18624 transitions. [2021-10-13 19:45:11,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 18624 transitions. [2021-10-13 19:45:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 19:45:11,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:11,417 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2021-10-13 19:45:11,444 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 19:45:11,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:11,617 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -783252287, now seen corresponding path program 75 times [2021-10-13 19:45:11,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:11,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903101535] [2021-10-13 19:45:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:11,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:14,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:14,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903101535] [2021-10-13 19:45:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903101535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:14,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859708549] [2021-10-13 19:45:14,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:14,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:14,164 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 19:45:14,166 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 19:45:15,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-13 19:45:15,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-13 19:45:15,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:15,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859708549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:15,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:15,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-13 19:45:15,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980345560] [2021-10-13 19:45:15,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-13 19:45:15,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-13 19:45:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 19:45:15,416 INFO L87 Difference]: Start difference. First operand 4812 states and 18624 transitions. Second operand has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:19,322 INFO L93 Difference]: Finished difference Result 10592 states and 41442 transitions. [2021-10-13 19:45:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-13 19:45:19,323 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 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 78 [2021-10-13 19:45:19,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:19,354 INFO L225 Difference]: With dead ends: 10592 [2021-10-13 19:45:19,354 INFO L226 Difference]: Without dead ends: 9072 [2021-10-13 19:45:19,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2383.6ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-13 19:45:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-10-13 19:45:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4872. [2021-10-13 19:45:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4857 states have (on average 3.8822318303479513) internal successors, (18856), 4871 states have internal predecessors, (18856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 18856 transitions. [2021-10-13 19:45:19,502 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 18856 transitions. Word has length 78 [2021-10-13 19:45:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:19,502 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 18856 transitions. [2021-10-13 19:45:19,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 18856 transitions. [2021-10-13 19:45:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 19:45:19,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:19,511 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2021-10-13 19:45:19,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:19,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:19,712 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1488983340, now seen corresponding path program 76 times [2021-10-13 19:45:19,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:19,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582240843] [2021-10-13 19:45:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:19,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:22,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:22,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582240843] [2021-10-13 19:45:22,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582240843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:22,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570481654] [2021-10-13 19:45:22,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:22,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:22,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:22,292 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 19:45:22,293 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 19:45:23,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:23,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:23,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 19:45:23,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:23,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570481654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:23,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:23,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-13 19:45:23,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760476000] [2021-10-13 19:45:23,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-13 19:45:23,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-13 19:45:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 19:45:23,542 INFO L87 Difference]: Start difference. First operand 4872 states and 18856 transitions. Second operand has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:27,761 INFO L93 Difference]: Finished difference Result 10728 states and 41975 transitions. [2021-10-13 19:45:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-13 19:45:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 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 79 [2021-10-13 19:45:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:27,789 INFO L225 Difference]: With dead ends: 10728 [2021-10-13 19:45:27,789 INFO L226 Difference]: Without dead ends: 9188 [2021-10-13 19:45:27,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2396.9ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 19:45:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2021-10-13 19:45:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 4932. [2021-10-13 19:45:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4917 states have (on average 3.8820418954647145) internal successors, (19088), 4931 states have internal predecessors, (19088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 19088 transitions. [2021-10-13 19:45:27,956 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 19088 transitions. Word has length 79 [2021-10-13 19:45:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:27,957 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 19088 transitions. [2021-10-13 19:45:27,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 19088 transitions. [2021-10-13 19:45:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 19:45:27,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:27,965 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2021-10-13 19:45:27,992 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 19:45:28,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:28,166 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:28,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1086156255, now seen corresponding path program 77 times [2021-10-13 19:45:28,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:28,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878510078] [2021-10-13 19:45:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:28,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:30,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:30,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878510078] [2021-10-13 19:45:30,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878510078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424696408] [2021-10-13 19:45:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:45:30,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:30,799 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 19:45:30,811 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 19:45:31,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-13 19:45:31,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:31,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-13 19:45:31,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:32,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424696408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:32,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:32,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-13 19:45:32,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334544448] [2021-10-13 19:45:32,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-13 19:45:32,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-13 19:45:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-13 19:45:32,102 INFO L87 Difference]: Start difference. First operand 4932 states and 19088 transitions. Second operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:36,243 INFO L93 Difference]: Finished difference Result 10864 states and 42508 transitions. [2021-10-13 19:45:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-13 19:45:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 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 80 [2021-10-13 19:45:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:36,275 INFO L225 Difference]: With dead ends: 10864 [2021-10-13 19:45:36,275 INFO L226 Difference]: Without dead ends: 9304 [2021-10-13 19:45:36,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2465.0ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-13 19:45:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-10-13 19:45:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4992. [2021-10-13 19:45:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 4977 states have (on average 3.8818565400843883) internal successors, (19320), 4991 states have internal predecessors, (19320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 19320 transitions. [2021-10-13 19:45:36,412 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 19320 transitions. Word has length 80 [2021-10-13 19:45:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:36,413 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 19320 transitions. [2021-10-13 19:45:36,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 19320 transitions. [2021-10-13 19:45:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 19:45:36,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:36,421 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2021-10-13 19:45:36,451 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 19:45:36,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:36,622 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash 688894924, now seen corresponding path program 78 times [2021-10-13 19:45:36,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:36,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492507061] [2021-10-13 19:45:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:36,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:39,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:39,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492507061] [2021-10-13 19:45:39,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492507061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:39,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690705414] [2021-10-13 19:45:39,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:45:39,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:39,417 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 19:45:39,418 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 19:45:40,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-13 19:45:40,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-13 19:45:40,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:40,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690705414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:40,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:40,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-13 19:45:40,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433064706] [2021-10-13 19:45:40,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-13 19:45:40,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-13 19:45:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-13 19:45:40,817 INFO L87 Difference]: Start difference. First operand 4992 states and 19320 transitions. Second operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:45,369 INFO L93 Difference]: Finished difference Result 11000 states and 43041 transitions. [2021-10-13 19:45:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-13 19:45:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 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 81 [2021-10-13 19:45:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:45,400 INFO L225 Difference]: With dead ends: 11000 [2021-10-13 19:45:45,400 INFO L226 Difference]: Without dead ends: 9420 [2021-10-13 19:45:45,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2600.5ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-13 19:45:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2021-10-13 19:45:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 5052. [2021-10-13 19:45:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 5037 states have (on average 3.8816756005558863) internal successors, (19552), 5051 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 19552 transitions. [2021-10-13 19:45:45,549 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 19552 transitions. Word has length 81 [2021-10-13 19:45:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:45,549 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 19552 transitions. [2021-10-13 19:45:45,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 19552 transitions. [2021-10-13 19:45:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 19:45:45,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:45,559 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2021-10-13 19:45:45,587 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 19:45:45,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:45,760 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:45,760 INFO L82 PathProgramCache]: Analyzing trace with hash -119093375, now seen corresponding path program 79 times [2021-10-13 19:45:45,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:45,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340300497] [2021-10-13 19:45:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:45,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:48,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:48,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340300497] [2021-10-13 19:45:48,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340300497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:48,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508108709] [2021-10-13 19:45:48,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:45:48,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:48,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:48,591 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 19:45:48,593 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 19:45:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:49,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-13 19:45:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:49,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508108709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:49,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:49,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-13 19:45:49,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903005448] [2021-10-13 19:45:49,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-13 19:45:49,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-13 19:45:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 19:45:49,915 INFO L87 Difference]: Start difference. First operand 5052 states and 19552 transitions. Second operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:54,073 INFO L93 Difference]: Finished difference Result 11136 states and 43574 transitions. [2021-10-13 19:45:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-13 19:45:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 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 82 [2021-10-13 19:45:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:54,109 INFO L225 Difference]: With dead ends: 11136 [2021-10-13 19:45:54,109 INFO L226 Difference]: Without dead ends: 9536 [2021-10-13 19:45:54,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2653.7ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 19:45:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-13 19:45:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 5112. [2021-10-13 19:45:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5097 states have (on average 3.8814989209338826) internal successors, (19784), 5111 states have internal predecessors, (19784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 19784 transitions. [2021-10-13 19:45:54,258 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 19784 transitions. Word has length 82 [2021-10-13 19:45:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:54,258 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 19784 transitions. [2021-10-13 19:45:54,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 19784 transitions. [2021-10-13 19:45:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 19:45:54,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:54,268 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2021-10-13 19:45:54,296 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 19:45:54,468 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,SelfDestructingSolverStorable96 [2021-10-13 19:45:54,469 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:45:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:54,470 INFO L82 PathProgramCache]: Analyzing trace with hash 603073132, now seen corresponding path program 80 times [2021-10-13 19:45:54,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:54,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945499868] [2021-10-13 19:45:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:54,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:57,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:57,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945499868] [2021-10-13 19:45:57,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945499868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:57,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370379733] [2021-10-13 19:45:57,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:57,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:57,299 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 19:45:57,303 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 19:45:58,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:58,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:58,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-13 19:45:58,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:58,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370379733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:58,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:58,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-13 19:45:58,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253075698] [2021-10-13 19:45:58,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-13 19:45:58,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-13 19:45:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 19:45:58,674 INFO L87 Difference]: Start difference. First operand 5112 states and 19784 transitions. Second operand has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:03,101 INFO L93 Difference]: Finished difference Result 11272 states and 44107 transitions. [2021-10-13 19:46:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-13 19:46:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 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 83 [2021-10-13 19:46:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:03,135 INFO L225 Difference]: With dead ends: 11272 [2021-10-13 19:46:03,135 INFO L226 Difference]: Without dead ends: 9652 [2021-10-13 19:46:03,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2655.2ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 19:46:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2021-10-13 19:46:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 5172. [2021-10-13 19:46:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5157 states have (on average 3.881326352530541) internal successors, (20016), 5171 states have internal predecessors, (20016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 20016 transitions. [2021-10-13 19:46:03,275 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 20016 transitions. Word has length 83 [2021-10-13 19:46:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:03,276 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 20016 transitions. [2021-10-13 19:46:03,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 20016 transitions. [2021-10-13 19:46:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 19:46:03,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:03,289 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2021-10-13 19:46:03,331 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 19:46:03,503 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,SelfDestructingSolverStorable97 [2021-10-13 19:46:03,503 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1515398369, now seen corresponding path program 81 times [2021-10-13 19:46:03,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:03,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097911647] [2021-10-13 19:46:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:03,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:06,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:06,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097911647] [2021-10-13 19:46:06,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097911647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:06,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007614305] [2021-10-13 19:46:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:46:06,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:06,397 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 19:46:06,398 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 19:46:07,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-13 19:46:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:07,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-13 19:46:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007614305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:07,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:07,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-13 19:46:07,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858422964] [2021-10-13 19:46:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-13 19:46:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-13 19:46:07,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-13 19:46:07,890 INFO L87 Difference]: Start difference. First operand 5172 states and 20016 transitions. Second operand has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:12,523 INFO L93 Difference]: Finished difference Result 11408 states and 44640 transitions. [2021-10-13 19:46:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-13 19:46:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 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 84 [2021-10-13 19:46:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:12,555 INFO L225 Difference]: With dead ends: 11408 [2021-10-13 19:46:12,556 INFO L226 Difference]: Without dead ends: 9768 [2021-10-13 19:46:12,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2718.0ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-13 19:46:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2021-10-13 19:46:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 5232. [2021-10-13 19:46:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5217 states have (on average 3.881157753498179) internal successors, (20248), 5231 states have internal predecessors, (20248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 20248 transitions. [2021-10-13 19:46:12,691 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 20248 transitions. Word has length 84 [2021-10-13 19:46:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 20248 transitions. [2021-10-13 19:46:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 20248 transitions. [2021-10-13 19:46:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 19:46:12,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:12,700 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2021-10-13 19:46:12,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-13 19:46:12,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:12,901 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash -267290356, now seen corresponding path program 82 times [2021-10-13 19:46:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:12,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100638805] [2021-10-13 19:46:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:12,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:15,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:15,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100638805] [2021-10-13 19:46:15,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100638805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:15,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517412526] [2021-10-13 19:46:15,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:15,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:15,858 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 19:46:15,859 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 19:46:17,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:17,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:17,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-13 19:46:17,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:17,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517412526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:17,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:17,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-13 19:46:17,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034077917] [2021-10-13 19:46:17,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-13 19:46:17,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-13 19:46:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-13 19:46:17,305 INFO L87 Difference]: Start difference. First operand 5232 states and 20248 transitions. Second operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:21,989 INFO L93 Difference]: Finished difference Result 11544 states and 45173 transitions. [2021-10-13 19:46:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-13 19:46:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 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 85 [2021-10-13 19:46:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:22,023 INFO L225 Difference]: With dead ends: 11544 [2021-10-13 19:46:22,024 INFO L226 Difference]: Without dead ends: 9884 [2021-10-13 19:46:22,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2778.8ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-13 19:46:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-10-13 19:46:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 5292. [2021-10-13 19:46:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5277 states have (on average 3.8809929884404015) internal successors, (20480), 5291 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 20480 transitions. [2021-10-13 19:46:22,161 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 20480 transitions. Word has length 85 [2021-10-13 19:46:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:22,161 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 20480 transitions. [2021-10-13 19:46:22,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 20480 transitions. [2021-10-13 19:46:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 19:46:22,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:22,170 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2021-10-13 19:46:22,199 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 19:46:22,371 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,SelfDestructingSolverStorable99 [2021-10-13 19:46:22,371 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:22,372 INFO L82 PathProgramCache]: Analyzing trace with hash 303934017, now seen corresponding path program 83 times [2021-10-13 19:46:22,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:22,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431327861] [2021-10-13 19:46:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:22,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:25,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431327861] [2021-10-13 19:46:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431327861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309885681] [2021-10-13 19:46:25,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:25,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:25,476 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 19:46:25,476 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 19:46:26,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-13 19:46:26,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:26,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-13 19:46:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:26,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309885681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:26,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-13 19:46:26,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353644722] [2021-10-13 19:46:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-13 19:46:26,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-13 19:46:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-13 19:46:26,918 INFO L87 Difference]: Start difference. First operand 5292 states and 20480 transitions. Second operand has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:31,548 INFO L93 Difference]: Finished difference Result 11680 states and 45706 transitions. [2021-10-13 19:46:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-13 19:46:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 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 86 [2021-10-13 19:46:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:31,584 INFO L225 Difference]: With dead ends: 11680 [2021-10-13 19:46:31,584 INFO L226 Difference]: Without dead ends: 10000 [2021-10-13 19:46:31,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2867.9ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-13 19:46:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-10-13 19:46:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5352. [2021-10-13 19:46:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5337 states have (on average 3.880831928049466) internal successors, (20712), 5351 states have internal predecessors, (20712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 20712 transitions. [2021-10-13 19:46:31,816 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 20712 transitions. Word has length 86 [2021-10-13 19:46:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:31,816 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 20712 transitions. [2021-10-13 19:46:31,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 20712 transitions. [2021-10-13 19:46:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 19:46:31,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:31,825 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2021-10-13 19:46:31,853 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 19:46:32,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:32,026 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 832020396, now seen corresponding path program 84 times [2021-10-13 19:46:32,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:32,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971190338] [2021-10-13 19:46:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:32,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:35,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:35,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971190338] [2021-10-13 19:46:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971190338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:35,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194535870] [2021-10-13 19:46:35,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:35,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:35,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:35,120 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 19:46:35,121 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 19:46:36,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-13 19:46:36,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:36,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-13 19:46:36,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:36,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194535870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:36,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:36,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-13 19:46:36,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178221990] [2021-10-13 19:46:36,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-13 19:46:36,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:36,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-13 19:46:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-13 19:46:36,698 INFO L87 Difference]: Start difference. First operand 5352 states and 20712 transitions. Second operand has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:41,617 INFO L93 Difference]: Finished difference Result 11816 states and 46239 transitions. [2021-10-13 19:46:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-13 19:46:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 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 87 [2021-10-13 19:46:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:41,651 INFO L225 Difference]: With dead ends: 11816 [2021-10-13 19:46:41,651 INFO L226 Difference]: Without dead ends: 10116 [2021-10-13 19:46:41,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2909.5ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-13 19:46:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-10-13 19:46:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5412. [2021-10-13 19:46:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5397 states have (on average 3.880674448767834) internal successors, (20944), 5411 states have internal predecessors, (20944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 20944 transitions. [2021-10-13 19:46:41,800 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 20944 transitions. Word has length 87 [2021-10-13 19:46:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:41,801 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 20944 transitions. [2021-10-13 19:46:41,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 20944 transitions. [2021-10-13 19:46:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 19:46:41,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:41,810 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2021-10-13 19:46:41,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-10-13 19:46:42,010 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,SelfDestructingSolverStorable101 [2021-10-13 19:46:42,011 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash 22828961, now seen corresponding path program 85 times [2021-10-13 19:46:42,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:42,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213433693] [2021-10-13 19:46:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:42,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:45,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:45,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213433693] [2021-10-13 19:46:45,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213433693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:45,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864212467] [2021-10-13 19:46:45,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:46:45,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:45,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:45,142 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 19:46:45,143 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 19:46:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-13 19:46:46,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:46,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864212467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:46,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-13 19:46:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880828013] [2021-10-13 19:46:46,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-13 19:46:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-13 19:46:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-13 19:46:46,725 INFO L87 Difference]: Start difference. First operand 5412 states and 20944 transitions. Second operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:51,867 INFO L93 Difference]: Finished difference Result 11952 states and 46772 transitions. [2021-10-13 19:46:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-13 19:46:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 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 88 [2021-10-13 19:46:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:51,900 INFO L225 Difference]: With dead ends: 11952 [2021-10-13 19:46:51,901 INFO L226 Difference]: Without dead ends: 10232 [2021-10-13 19:46:51,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2949.2ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-13 19:46:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2021-10-13 19:46:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 5472. [2021-10-13 19:46:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5457 states have (on average 3.8805204324720544) internal successors, (21176), 5471 states have internal predecessors, (21176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 21176 transitions. [2021-10-13 19:46:52,046 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 21176 transitions. Word has length 88 [2021-10-13 19:46:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:52,047 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 21176 transitions. [2021-10-13 19:46:52,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 21176 transitions. [2021-10-13 19:46:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 19:46:52,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:52,056 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2021-10-13 19:46:52,085 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 19:46:52,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:52,261 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:46:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash 707698252, now seen corresponding path program 86 times [2021-10-13 19:46:52,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:52,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851635323] [2021-10-13 19:46:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:52,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:55,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:55,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851635323] [2021-10-13 19:46:55,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851635323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:55,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276123804] [2021-10-13 19:46:55,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:46:55,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:55,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:55,545 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 19:46:55,546 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 19:46:56,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:46:56,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:56,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-13 19:46:56,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:57,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276123804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:57,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:57,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-13 19:46:57,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675379253] [2021-10-13 19:46:57,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-13 19:46:57,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-13 19:46:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 19:46:57,088 INFO L87 Difference]: Start difference. First operand 5472 states and 21176 transitions. Second operand has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:02,265 INFO L93 Difference]: Finished difference Result 12088 states and 47305 transitions. [2021-10-13 19:47:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-13 19:47:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 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 89 [2021-10-13 19:47:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:02,298 INFO L225 Difference]: With dead ends: 12088 [2021-10-13 19:47:02,298 INFO L226 Difference]: Without dead ends: 10348 [2021-10-13 19:47:02,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3091.7ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 19:47:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-10-13 19:47:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 5532. [2021-10-13 19:47:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5517 states have (on average 3.8803697661772705) internal successors, (21408), 5531 states have internal predecessors, (21408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 21408 transitions. [2021-10-13 19:47:02,435 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 21408 transitions. Word has length 89 [2021-10-13 19:47:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:02,436 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 21408 transitions. [2021-10-13 19:47:02,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 21408 transitions. [2021-10-13 19:47:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 19:47:02,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:02,445 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2021-10-13 19:47:02,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-13 19:47:02,645 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,SelfDestructingSolverStorable103 [2021-10-13 19:47:02,646 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:47:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 463809793, now seen corresponding path program 87 times [2021-10-13 19:47:02,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:02,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15174479] [2021-10-13 19:47:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:02,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:05,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:05,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15174479] [2021-10-13 19:47:05,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15174479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:05,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963411990] [2021-10-13 19:47:05,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:47:05,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:05,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:05,960 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 19:47:05,961 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 19:47:07,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-13 19:47:07,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:07,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-13 19:47:07,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963411990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:07,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:07,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-13 19:47:07,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960073754] [2021-10-13 19:47:07,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-13 19:47:07,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-13 19:47:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-13 19:47:07,578 INFO L87 Difference]: Start difference. First operand 5532 states and 21408 transitions. Second operand has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:13,188 INFO L93 Difference]: Finished difference Result 12224 states and 47838 transitions. [2021-10-13 19:47:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-13 19:47:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 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 90 [2021-10-13 19:47:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:13,222 INFO L225 Difference]: With dead ends: 12224 [2021-10-13 19:47:13,222 INFO L226 Difference]: Without dead ends: 10464 [2021-10-13 19:47:13,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3108.1ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-13 19:47:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10464 states. [2021-10-13 19:47:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10464 to 5592. [2021-10-13 19:47:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5577 states have (on average 3.8802223417608035) internal successors, (21640), 5591 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 21640 transitions. [2021-10-13 19:47:13,371 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 21640 transitions. Word has length 90 [2021-10-13 19:47:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:13,371 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 21640 transitions. [2021-10-13 19:47:13,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 21640 transitions. [2021-10-13 19:47:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-13 19:47:13,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:13,381 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2021-10-13 19:47:13,409 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 19:47:13,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:13,582 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:47:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1493202156, now seen corresponding path program 88 times [2021-10-13 19:47:13,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:13,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441803023] [2021-10-13 19:47:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:13,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:16,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:16,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441803023] [2021-10-13 19:47:16,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441803023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:16,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221085482] [2021-10-13 19:47:16,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:47:16,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:16,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:16,978 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 19:47:16,983 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 19:47:18,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:47:18,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:18,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-13 19:47:18,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:18,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221085482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:18,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:18,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-13 19:47:18,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783680735] [2021-10-13 19:47:18,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-13 19:47:18,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-13 19:47:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 19:47:18,627 INFO L87 Difference]: Start difference. First operand 5592 states and 21640 transitions. Second operand has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:24,227 INFO L93 Difference]: Finished difference Result 12360 states and 48371 transitions. [2021-10-13 19:47:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-13 19:47:24,228 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 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 91 [2021-10-13 19:47:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:24,262 INFO L225 Difference]: With dead ends: 12360 [2021-10-13 19:47:24,263 INFO L226 Difference]: Without dead ends: 10580 [2021-10-13 19:47:24,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3175.0ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 19:47:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-10-13 19:47:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5652. [2021-10-13 19:47:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5637 states have (on average 3.8800780557033883) internal successors, (21872), 5651 states have internal predecessors, (21872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 21872 transitions. [2021-10-13 19:47:24,411 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 21872 transitions. Word has length 91 [2021-10-13 19:47:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:24,411 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 21872 transitions. [2021-10-13 19:47:24,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 21872 transitions. [2021-10-13 19:47:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-13 19:47:24,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:24,421 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2021-10-13 19:47:24,449 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 19:47:24,626 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,SelfDestructingSolverStorable105 [2021-10-13 19:47:24,627 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:47:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash -955372959, now seen corresponding path program 89 times [2021-10-13 19:47:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:24,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334399983] [2021-10-13 19:47:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:24,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:28,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334399983] [2021-10-13 19:47:28,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334399983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952536247] [2021-10-13 19:47:28,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:47:28,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:28,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:28,162 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 19:47:28,163 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 19:47:29,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-13 19:47:29,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:29,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-13 19:47:29,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:29,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952536247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:29,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:29,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-13 19:47:29,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832293602] [2021-10-13 19:47:29,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-13 19:47:29,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-13 19:47:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-13 19:47:29,810 INFO L87 Difference]: Start difference. First operand 5652 states and 21872 transitions. Second operand has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:35,984 INFO L93 Difference]: Finished difference Result 12496 states and 48904 transitions. [2021-10-13 19:47:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-13 19:47:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 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 92 [2021-10-13 19:47:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:36,018 INFO L225 Difference]: With dead ends: 12496 [2021-10-13 19:47:36,018 INFO L226 Difference]: Without dead ends: 10696 [2021-10-13 19:47:36,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3341.9ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-13 19:47:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2021-10-13 19:47:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 5712. [2021-10-13 19:47:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5697 states have (on average 3.8799368088467614) internal successors, (22104), 5711 states have internal predecessors, (22104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 22104 transitions. [2021-10-13 19:47:36,162 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 22104 transitions. Word has length 92 [2021-10-13 19:47:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:36,163 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 22104 transitions. [2021-10-13 19:47:36,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 22104 transitions. [2021-10-13 19:47:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-13 19:47:36,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:36,172 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2021-10-13 19:47:36,200 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 19:47:36,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:36,373 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:47:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:36,374 INFO L82 PathProgramCache]: Analyzing trace with hash 448209804, now seen corresponding path program 90 times [2021-10-13 19:47:36,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:36,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559856487] [2021-10-13 19:47:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:36,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:39,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:39,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559856487] [2021-10-13 19:47:39,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559856487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:39,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341443591] [2021-10-13 19:47:39,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:47:39,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:39,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:39,969 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 19:47:39,970 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 19:47:41,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-13 19:47:41,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:41,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-13 19:47:41,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:41,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341443591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:41,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:41,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-13 19:47:41,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537191055] [2021-10-13 19:47:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-13 19:47:41,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-13 19:47:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 19:47:41,631 INFO L87 Difference]: Start difference. First operand 5712 states and 22104 transitions. Second operand has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:47,813 INFO L93 Difference]: Finished difference Result 12632 states and 49437 transitions. [2021-10-13 19:47:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-13 19:47:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 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 93 [2021-10-13 19:47:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:47,848 INFO L225 Difference]: With dead ends: 12632 [2021-10-13 19:47:47,848 INFO L226 Difference]: Without dead ends: 10812 [2021-10-13 19:47:47,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3399.7ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 19:47:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10812 states. [2021-10-13 19:47:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10812 to 5772. [2021-10-13 19:47:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5757 states have (on average 3.879798506166406) internal successors, (22336), 5771 states have internal predecessors, (22336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 22336 transitions. [2021-10-13 19:47:48,100 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 22336 transitions. Word has length 93 [2021-10-13 19:47:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:48,100 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 22336 transitions. [2021-10-13 19:47:48,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 22336 transitions. [2021-10-13 19:47:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-13 19:47:48,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:48,111 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2021-10-13 19:47:48,141 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 19:47:48,318 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,SelfDestructingSolverStorable107 [2021-10-13 19:47:48,319 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:47:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:48,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1009602497, now seen corresponding path program 91 times [2021-10-13 19:47:48,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:48,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201493839] [2021-10-13 19:47:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:48,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:51,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:51,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201493839] [2021-10-13 19:47:51,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201493839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:51,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714958248] [2021-10-13 19:47:51,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:47:51,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:51,950 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 19:47:51,951 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 19:47:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:53,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-13 19:47:53,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:53,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714958248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:53,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:53,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-13 19:47:53,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638161183] [2021-10-13 19:47:53,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-13 19:47:53,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-13 19:47:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 19:47:53,626 INFO L87 Difference]: Start difference. First operand 5772 states and 22336 transitions. Second operand has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:59,858 INFO L93 Difference]: Finished difference Result 12768 states and 49970 transitions. [2021-10-13 19:47:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-13 19:47:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 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 94 [2021-10-13 19:47:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:59,908 INFO L225 Difference]: With dead ends: 12768 [2021-10-13 19:47:59,908 INFO L226 Difference]: Without dead ends: 10928 [2021-10-13 19:47:59,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3426.9ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 19:47:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2021-10-13 19:48:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 5832. [2021-10-13 19:48:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5817 states have (on average 3.8796630565583636) internal successors, (22568), 5831 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 22568 transitions. [2021-10-13 19:48:00,068 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 22568 transitions. Word has length 94 [2021-10-13 19:48:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:00,069 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 22568 transitions. [2021-10-13 19:48:00,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 22568 transitions. [2021-10-13 19:48:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 19:48:00,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:00,079 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2021-10-13 19:48:00,107 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 19:48:00,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:00,280 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:48:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1232906796, now seen corresponding path program 92 times [2021-10-13 19:48:00,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:00,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465227038] [2021-10-13 19:48:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:00,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:03,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:03,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465227038] [2021-10-13 19:48:03,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465227038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:03,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450068144] [2021-10-13 19:48:03,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:48:03,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:03,951 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 19:48:03,953 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 19:48:05,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:48:05,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:05,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-13 19:48:05,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:05,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450068144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:05,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:05,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-13 19:48:05,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227604234] [2021-10-13 19:48:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-13 19:48:05,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-13 19:48:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 19:48:05,638 INFO L87 Difference]: Start difference. First operand 5832 states and 22568 transitions. Second operand has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:12,237 INFO L93 Difference]: Finished difference Result 12904 states and 50503 transitions. [2021-10-13 19:48:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-13 19:48:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 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 95 [2021-10-13 19:48:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:12,274 INFO L225 Difference]: With dead ends: 12904 [2021-10-13 19:48:12,274 INFO L226 Difference]: Without dead ends: 11044 [2021-10-13 19:48:12,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3468.8ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 19:48:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-10-13 19:48:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5892. [2021-10-13 19:48:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5892 states, 5877 states have (on average 3.8795303726391017) internal successors, (22800), 5891 states have internal predecessors, (22800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 22800 transitions. [2021-10-13 19:48:12,430 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 22800 transitions. Word has length 95 [2021-10-13 19:48:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:12,430 INFO L470 AbstractCegarLoop]: Abstraction has 5892 states and 22800 transitions. [2021-10-13 19:48:12,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 22800 transitions. [2021-10-13 19:48:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-13 19:48:12,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:12,441 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2021-10-13 19:48:12,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-13 19:48:12,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:12,641 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:48:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash -434594527, now seen corresponding path program 93 times [2021-10-13 19:48:12,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:12,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179668896] [2021-10-13 19:48:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:12,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:16,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:16,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179668896] [2021-10-13 19:48:16,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179668896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:16,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281766888] [2021-10-13 19:48:16,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:48:16,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:16,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:16,411 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 19:48:16,412 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 19:48:18,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-13 19:48:18,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:18,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-13 19:48:18,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:18,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281766888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:18,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:18,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-13 19:48:18,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212001057] [2021-10-13 19:48:18,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-13 19:48:18,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-13 19:48:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-13 19:48:18,251 INFO L87 Difference]: Start difference. First operand 5892 states and 22800 transitions. Second operand has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:25,171 INFO L93 Difference]: Finished difference Result 13040 states and 51036 transitions. [2021-10-13 19:48:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-13 19:48:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-10-13 19:48:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:25,206 INFO L225 Difference]: With dead ends: 13040 [2021-10-13 19:48:25,206 INFO L226 Difference]: Without dead ends: 11160 [2021-10-13 19:48:25,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3515.0ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-13 19:48:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-10-13 19:48:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 5952. [2021-10-13 19:48:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5937 states have (on average 3.8794003705575206) internal successors, (23032), 5951 states have internal predecessors, (23032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 23032 transitions. [2021-10-13 19:48:25,357 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 23032 transitions. Word has length 96 [2021-10-13 19:48:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:25,357 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 23032 transitions. [2021-10-13 19:48:25,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 23032 transitions. [2021-10-13 19:48:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-13 19:48:25,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:25,367 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2021-10-13 19:48:25,395 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 19:48:25,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:25,568 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:48:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash -587527988, now seen corresponding path program 94 times [2021-10-13 19:48:25,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:25,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961078741] [2021-10-13 19:48:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:25,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:29,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:29,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961078741] [2021-10-13 19:48:29,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961078741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:29,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621853622] [2021-10-13 19:48:29,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:48:29,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:29,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:29,393 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 19:48:29,394 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 19:48:30,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:48:30,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:30,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-13 19:48:30,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:31,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621853622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:31,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:31,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-13 19:48:31,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188497437] [2021-10-13 19:48:31,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-13 19:48:31,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-13 19:48:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-13 19:48:31,108 INFO L87 Difference]: Start difference. First operand 5952 states and 23032 transitions. Second operand has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:37,798 INFO L93 Difference]: Finished difference Result 13176 states and 51569 transitions. [2021-10-13 19:48:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-13 19:48:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 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 97 [2021-10-13 19:48:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:37,836 INFO L225 Difference]: With dead ends: 13176 [2021-10-13 19:48:37,836 INFO L226 Difference]: Without dead ends: 11276 [2021-10-13 19:48:37,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3621.5ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-13 19:48:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-10-13 19:48:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 6012. [2021-10-13 19:48:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5997 states have (on average 3.8792729698182424) internal successors, (23264), 6011 states have internal predecessors, (23264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 23264 transitions. [2021-10-13 19:48:37,995 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 23264 transitions. Word has length 97 [2021-10-13 19:48:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:37,995 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 23264 transitions. [2021-10-13 19:48:37,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 23264 transitions. [2021-10-13 19:48:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-13 19:48:38,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:38,006 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2021-10-13 19:48:38,034 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 19:48:38,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-13 19:48:38,207 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:48:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1033497983, now seen corresponding path program 95 times [2021-10-13 19:48:38,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:38,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313309250] [2021-10-13 19:48:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:38,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:42,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:42,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313309250] [2021-10-13 19:48:42,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313309250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:42,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962832900] [2021-10-13 19:48:42,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:48:42,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:42,145 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 19:48:42,146 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 19:48:43,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-13 19:48:43,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:43,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-13 19:48:43,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:43,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962832900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:43,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:43,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-13 19:48:43,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745325332] [2021-10-13 19:48:43,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-13 19:48:43,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-13 19:48:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-13 19:48:43,983 INFO L87 Difference]: Start difference. First operand 6012 states and 23264 transitions. Second operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:51,625 INFO L93 Difference]: Finished difference Result 13312 states and 52102 transitions. [2021-10-13 19:48:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-13 19:48:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 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 98 [2021-10-13 19:48:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:51,661 INFO L225 Difference]: With dead ends: 13312 [2021-10-13 19:48:51,661 INFO L226 Difference]: Without dead ends: 11392 [2021-10-13 19:48:51,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3739.0ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-13 19:48:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-10-13 19:48:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 6072. [2021-10-13 19:48:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6057 states have (on average 3.8791480931154037) internal successors, (23496), 6071 states have internal predecessors, (23496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 23496 transitions. [2021-10-13 19:48:51,809 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 23496 transitions. Word has length 98 [2021-10-13 19:48:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:51,809 INFO L470 AbstractCegarLoop]: Abstraction has 6072 states and 23496 transitions. [2021-10-13 19:48:51,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 23496 transitions. [2021-10-13 19:48:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-13 19:48:51,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:51,819 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2021-10-13 19:48:51,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-13 19:48:52,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 19:48:52,020 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:48:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1973665940, now seen corresponding path program 96 times [2021-10-13 19:48:52,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:52,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093145693] [2021-10-13 19:48:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:52,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:56,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:56,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093145693] [2021-10-13 19:48:56,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093145693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:56,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749158688] [2021-10-13 19:48:56,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:48:56,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:56,103 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 19:48:56,104 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 19:48:57,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-13 19:48:57,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:48:57,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-13 19:48:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749158688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:57,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:57,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-13 19:48:57,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048331477] [2021-10-13 19:48:57,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-13 19:48:57,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-13 19:48:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 19:48:57,971 INFO L87 Difference]: Start difference. First operand 6072 states and 23496 transitions. Second operand has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:05,421 INFO L93 Difference]: Finished difference Result 13448 states and 52635 transitions. [2021-10-13 19:49:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-13 19:49:05,422 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 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 99 [2021-10-13 19:49:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:05,458 INFO L225 Difference]: With dead ends: 13448 [2021-10-13 19:49:05,458 INFO L226 Difference]: Without dead ends: 11508 [2021-10-13 19:49:05,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3880.1ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 19:49:05,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2021-10-13 19:49:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 6132. [2021-10-13 19:49:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6117 states have (on average 3.87902566617623) internal successors, (23728), 6131 states have internal predecessors, (23728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 23728 transitions. [2021-10-13 19:49:05,623 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 23728 transitions. Word has length 99 [2021-10-13 19:49:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:05,623 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 23728 transitions. [2021-10-13 19:49:05,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 23728 transitions. [2021-10-13 19:49:05,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 19:49:05,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:05,635 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2021-10-13 19:49:05,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-13 19:49:05,836 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,SelfDestructingSolverStorable113 [2021-10-13 19:49:05,836 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:49:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:05,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1054101535, now seen corresponding path program 97 times [2021-10-13 19:49:05,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:05,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740590163] [2021-10-13 19:49:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:05,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:10,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:10,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740590163] [2021-10-13 19:49:10,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740590163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:10,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491992590] [2021-10-13 19:49:10,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:49:10,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:10,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:10,006 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 19:49:10,007 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 19:49:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:11,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-13 19:49:11,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:11,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491992590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:11,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:11,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-13 19:49:11,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040993772] [2021-10-13 19:49:11,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-13 19:49:11,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-13 19:49:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-13 19:49:11,817 INFO L87 Difference]: Start difference. First operand 6132 states and 23728 transitions. Second operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:19,972 INFO L93 Difference]: Finished difference Result 13584 states and 53168 transitions. [2021-10-13 19:49:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-13 19:49:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 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 100 [2021-10-13 19:49:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:20,016 INFO L225 Difference]: With dead ends: 13584 [2021-10-13 19:49:20,016 INFO L226 Difference]: Without dead ends: 11624 [2021-10-13 19:49:20,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3949.2ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-13 19:49:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2021-10-13 19:49:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 6192. [2021-10-13 19:49:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6177 states have (on average 3.878905617613728) internal successors, (23960), 6191 states have internal predecessors, (23960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 23960 transitions. [2021-10-13 19:49:20,321 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 23960 transitions. Word has length 100 [2021-10-13 19:49:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:20,322 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 23960 transitions. [2021-10-13 19:49:20,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 23960 transitions. [2021-10-13 19:49:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 19:49:20,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:20,331 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2021-10-13 19:49:20,359 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 19:49:20,532 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,SelfDestructingSolverStorable114 [2021-10-13 19:49:20,532 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:49:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1682591244, now seen corresponding path program 98 times [2021-10-13 19:49:20,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:20,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073896518] [2021-10-13 19:49:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:20,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:24,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:24,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073896518] [2021-10-13 19:49:24,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073896518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:24,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265155109] [2021-10-13 19:49:24,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:49:24,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:24,705 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 19:49:24,705 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 19:49:26,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:49:26,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:26,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-13 19:49:26,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:26,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265155109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:26,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:26,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-13 19:49:26,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135094074] [2021-10-13 19:49:26,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-13 19:49:26,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-13 19:49:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 19:49:26,571 INFO L87 Difference]: Start difference. First operand 6192 states and 23960 transitions. Second operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:34,559 INFO L93 Difference]: Finished difference Result 13720 states and 53701 transitions. [2021-10-13 19:49:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-13 19:49:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 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 101 [2021-10-13 19:49:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:34,611 INFO L225 Difference]: With dead ends: 13720 [2021-10-13 19:49:34,611 INFO L226 Difference]: Without dead ends: 11740 [2021-10-13 19:49:34,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3945.4ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 19:49:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2021-10-13 19:49:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 6252. [2021-10-13 19:49:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6237 states have (on average 3.878787878787879) internal successors, (24192), 6251 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 24192 transitions. [2021-10-13 19:49:34,769 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 24192 transitions. Word has length 101 [2021-10-13 19:49:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 24192 transitions. [2021-10-13 19:49:34,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 24192 transitions. [2021-10-13 19:49:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 19:49:34,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:34,780 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2021-10-13 19:49:34,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-13 19:49:34,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:34,981 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:49:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 620721473, now seen corresponding path program 99 times [2021-10-13 19:49:34,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:34,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100718847] [2021-10-13 19:49:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:34,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:39,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:39,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100718847] [2021-10-13 19:49:39,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100718847] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:39,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592416670] [2021-10-13 19:49:39,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:49:39,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:39,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:39,229 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 19:49:39,230 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 19:49:40,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-13 19:49:40,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:40,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-13 19:49:40,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:41,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592416670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:41,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:41,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-13 19:49:41,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389089888] [2021-10-13 19:49:41,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-13 19:49:41,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-13 19:49:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-13 19:49:41,238 INFO L87 Difference]: Start difference. First operand 6252 states and 24192 transitions. Second operand has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:49,513 INFO L93 Difference]: Finished difference Result 13856 states and 54234 transitions. [2021-10-13 19:49:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-13 19:49:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 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 102 [2021-10-13 19:49:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:49,554 INFO L225 Difference]: With dead ends: 13856 [2021-10-13 19:49:49,554 INFO L226 Difference]: Without dead ends: 11856 [2021-10-13 19:49:49,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 4016.9ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-13 19:49:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-10-13 19:49:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 6312. [2021-10-13 19:49:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6312 states, 6297 states have (on average 3.8786723836747656) internal successors, (24424), 6311 states have internal predecessors, (24424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 24424 transitions. [2021-10-13 19:49:49,731 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 24424 transitions. Word has length 102 [2021-10-13 19:49:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:49,732 INFO L470 AbstractCegarLoop]: Abstraction has 6312 states and 24424 transitions. [2021-10-13 19:49:49,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 24424 transitions. [2021-10-13 19:49:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 19:49:49,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:49,743 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2021-10-13 19:49:49,778 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 19:49:49,956 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,SelfDestructingSolverStorable116 [2021-10-13 19:49:49,957 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-13 19:49:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2062496940, now seen corresponding path program 100 times [2021-10-13 19:49:49,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:49,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843436642] [2021-10-13 19:49:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:49,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:54,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:54,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843436642] [2021-10-13 19:49:54,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843436642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:54,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134713284] [2021-10-13 19:49:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:49:54,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:54,288 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 19:49:54,289 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 19:49:55,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:49:55,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-13 19:49:55,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:56,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134713284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:56,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:56,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-13 19:49:56,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827137488] [2021-10-13 19:49:56,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-13 19:49:56,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-13 19:49:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-13 19:49:56,234 INFO L87 Difference]: Start difference. First operand 6312 states and 24424 transitions. Second operand has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 19:49:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:49:58,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,476 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 19:49:58,479 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 19:49:58,479 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 19:49:58,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:58,655 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). [2021-10-13 19:49:58,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,657 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,658 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,659 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,660 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,661 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,662 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:58,669 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:49:58,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:49:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:49:58 BasicIcfg [2021-10-13 19:49:58,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:49:58,671 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-13 19:49:58,673 INFO L168 Benchmark]: Toolchain (without parser) took 516776.69 ms. Allocated memory was 163.6 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 138.0 MB in the beginning and 494.4 MB in the end (delta: -356.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,673 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:49:58,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.31 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 127.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 163.6 MB. Free memory was 127.1 MB in the beginning and 125.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,674 INFO L168 Benchmark]: Boogie Preprocessor took 32.64 ms. Allocated memory is still 163.6 MB. Free memory was 125.3 MB in the beginning and 124.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,674 INFO L168 Benchmark]: RCFGBuilder took 1046.10 ms. Allocated memory is still 163.6 MB. Free memory was 123.8 MB in the beginning and 130.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,675 INFO L168 Benchmark]: TraceAbstraction took 515264.10 ms. Allocated memory was 163.6 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 130.3 MB in the beginning and 494.4 MB in the end (delta: -364.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2021-10-13 19:49:58,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.31 ms. Allocated memory is still 163.6 MB. Free memory was 137.8 MB in the beginning and 127.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 163.6 MB. Free memory was 127.1 MB in the beginning and 125.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.64 ms. Allocated memory is still 163.6 MB. Free memory was 125.3 MB in the beginning and 124.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1046.10 ms. Allocated memory is still 163.6 MB. Free memory was 123.8 MB in the beginning and 130.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 515264.10 ms. Allocated memory was 163.6 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 130.3 MB in the beginning and 494.4 MB in the end (delta: -364.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6846.3ms, 141 PlacesBefore, 54 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 124 TotalNumberOfCompositions, 3550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3550, positive: 3550, positive conditional: 0, positive unconditional: 3550, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1323, positive: 1323, positive conditional: 0, positive unconditional: 1323, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3550, positive: 2227, positive conditional: 0, positive unconditional: 2227, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1323, unknown conditional: 0, unknown unconditional: 1323] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (6312states) and FLOYD_HOARE automaton (currently 35 states, 104 states before enhancement),while ReachableStatesComputation was computing reachable states (1548 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 169 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 515105.8ms, OverallIterations: 118, TraceHistogramMax: 100, EmptinessCheckTime: 640.4ms, AutomataDifference: 233456.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7085.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12660 SDtfs, 286942 SDslu, 116455 SDs, 0 SdLazy, 22990 SolverSat, 55781 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31461.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10510 GetRequests, 5219 SyntacticMatches, 0 SemanticMatches, 5291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9908 ImplicationChecksByTransitivity, 141910.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6312occurred in iteration=117, InterpolantAutomatonStates: 5308, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13917.1ms AutomataMinimizationTime, 117 MinimizatonAttempts, 310348 StatesRemovedByMinimization, 113 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1912.3ms SsaConstructionTime, 11131.5ms SatisfiabilityAnalysisTime, 166443.3ms InterpolantComputationTime, 10920 NumberOfCodeBlocks, 10908 NumberOfCodeBlocksAsserted, 1520 NumberOfCheckSat, 10692 ConstructedInterpolants, 0 QuantifiedInterpolants, 32068 SizeOfPredicates, 15 NumberOfNonLiveVariables, 53861 ConjunctsInSsa, 5405 ConjunctsInUnsatCore, 228 InterpolantComputations, 14 PerfectInterpolantSequences, 30/343457 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