/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-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:23:00,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:23:00,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:23:00,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 16:23:00,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 16:23:00,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 16:23:00,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 16:23:00,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 16:23:00,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 16:23:00,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 16:23:00,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 16:23:00,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 16:23:00,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:23:00,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:23:00,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:23:00,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:23:00,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:23:00,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:23:00,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:23:00,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:23:00,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:23:00,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:23:00,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:23:00,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:23:00,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:23:00,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:23:00,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:23:00,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:23:00,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:23:00,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:23:00,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:23:00,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:23:00,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:23:00,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:23:00,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:23:00,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:23:00,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:23:00,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:23:00,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:23:00,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:23:00,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:23:00,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:23:00,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:23:00,384 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:23:00,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:23:00,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:23:00,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:23:00,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:23:00,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:23:00,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:23:00,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:23:00,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:23:00,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:23:00,387 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:23:00,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:23:00,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:23:00,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:23:00,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:23:00,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:23:00,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:23:00,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:23:00,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:23:00,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:23:00,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:23:00,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:23:00,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:23:00,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:23:00,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:23:00,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:23:00,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:23:00,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:23:00,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:23:00,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:23:00,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:23:00,823 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:23:00,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-08 16:23:00,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4971827d7/5ce61ea0607c4344a1e7e5405120e441/FLAGac4c3289a [2021-10-08 16:23:01,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:23:01,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-08 16:23:01,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4971827d7/5ce61ea0607c4344a1e7e5405120e441/FLAGac4c3289a [2021-10-08 16:23:01,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4971827d7/5ce61ea0607c4344a1e7e5405120e441 [2021-10-08 16:23:01,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:23:01,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:23:01,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:23:01,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:23:01,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:23:01,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:23:01" (1/1) ... [2021-10-08 16:23:01,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c12eecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:01, skipping insertion in model container [2021-10-08 16:23:01,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:23:01" (1/1) ... [2021-10-08 16:23:01,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:23:01,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:23:02,172 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-three-array-min.wvr.c[2656,2669] [2021-10-08 16:23:02,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:23:02,192 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:23:02,223 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-three-array-min.wvr.c[2656,2669] [2021-10-08 16:23:02,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:23:02,248 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:23:02,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02 WrapperNode [2021-10-08 16:23:02,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:23:02,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:23:02,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:23:02,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:23:02,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:23:02,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:23:02,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:23:02,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:23:02,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:23:02,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:23:02,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:23:02,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:23:02,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (1/1) ... [2021-10-08 16:23:02,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:23:02,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:02,469 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) [2021-10-08 16:23:02,495 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 [2021-10-08 16:23:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:23:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:23:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:23:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:23:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:23:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:23:02,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:23:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:23:02,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:23:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:23:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:23:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:23:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:23:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:23:02,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:23:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:23:02,546 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:23:03,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:23:03,712 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-08 16:23:03,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:23:03 BoogieIcfgContainer [2021-10-08 16:23:03,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:23:03,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:23:03,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:23:03,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:23:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:23:01" (1/3) ... [2021-10-08 16:23:03,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c87975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:23:03, skipping insertion in model container [2021-10-08 16:23:03,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:23:02" (2/3) ... [2021-10-08 16:23:03,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c87975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:23:03, skipping insertion in model container [2021-10-08 16:23:03,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:23:03" (3/3) ... [2021-10-08 16:23:03,724 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-10-08 16:23:03,729 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:23:03,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:23:03,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-08 16:23:03,730 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:23:03,783 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,784 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,784 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,784 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,785 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,785 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,786 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,786 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,786 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,786 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,787 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,789 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,789 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,790 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,790 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,790 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,790 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,791 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,791 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,791 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,791 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,792 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,793 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,794 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,794 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,794 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,794 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,795 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,795 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,798 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,798 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,798 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,798 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,798 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,799 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,799 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,799 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,800 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,803 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,803 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,803 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,803 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,803 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,805 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,805 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,805 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,807 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,807 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,809 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,809 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,810 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,811 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,811 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,811 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,816 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,817 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,819 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,819 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,819 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,819 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,820 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,820 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,820 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,820 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,823 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,823 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,823 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,825 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,825 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,826 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,826 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,826 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,827 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,827 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,828 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,828 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,828 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,828 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,829 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,831 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,831 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,831 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,831 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,831 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,833 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,833 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,833 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,833 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,833 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,834 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,840 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,841 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,841 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,841 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,841 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,841 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,843 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,845 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,845 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,845 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,849 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,850 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,850 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,850 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,850 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,850 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,851 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,851 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,852 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,852 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,853 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,853 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,853 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,853 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,859 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,860 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,862 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,862 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,863 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,863 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,863 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,864 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,864 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,864 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,864 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,865 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,865 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,865 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,865 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,865 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,866 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,866 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,866 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,866 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,867 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,867 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,869 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,869 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,870 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,870 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,870 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,879 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,880 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,882 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,882 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,882 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,883 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,883 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#t~short37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,884 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,884 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,885 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,885 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,887 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,887 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,887 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,887 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,888 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,888 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:23:03,895 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:23:03,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:23:03,954 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 [2021-10-08 16:23:03,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-10-08 16:23:03,978 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:23:03,992 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 301 places, 319 transitions, 662 flow [2021-10-08 16:23:03,995 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 301 places, 319 transitions, 662 flow [2021-10-08 16:23:03,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 319 transitions, 662 flow [2021-10-08 16:23:04,172 INFO L129 PetriNetUnfolder]: 28/316 cut-off events. [2021-10-08 16:23:04,173 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:23:04,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 316 events. 28/316 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 384 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 265. Up to 3 conditions per place. [2021-10-08 16:23:04,195 INFO L116 LiptonReduction]: Number of co-enabled transitions 5434 [2021-10-08 16:23:25,080 INFO L131 LiptonReduction]: Checked pairs total: 10177 [2021-10-08 16:23:25,081 INFO L133 LiptonReduction]: Total number of compositions: 365 [2021-10-08 16:23:25,091 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 70 transitions, 164 flow [2021-10-08 16:23:25,215 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2604 states, 2492 states have (on average 3.8487158908507224) internal successors, (9591), 2603 states have internal predecessors, (9591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 2604 states, 2492 states have (on average 3.8487158908507224) internal successors, (9591), 2603 states have internal predecessors, (9591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:23:25,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:25,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:23:25,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash 43446, now seen corresponding path program 1 times [2021-10-08 16:23:25,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:25,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90299581] [2021-10-08 16:23:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:25,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:25,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90299581] [2021-10-08 16:23:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90299581] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:25,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:23:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:23:25,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54782093] [2021-10-08 16:23:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:23:25,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:23:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:25,519 INFO L87 Difference]: Start difference. First operand has 2604 states, 2492 states have (on average 3.8487158908507224) internal successors, (9591), 2603 states have internal predecessors, (9591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:25,685 INFO L93 Difference]: Finished difference Result 3629 states and 13334 transitions. [2021-10-08 16:23:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:23:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:25,748 INFO L225 Difference]: With dead ends: 3629 [2021-10-08 16:23:25,749 INFO L226 Difference]: Without dead ends: 3629 [2021-10-08 16:23:25,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2021-10-08 16:23:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 1821. [2021-10-08 16:23:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1747 states have (on average 3.8248425872925016) internal successors, (6682), 1820 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 6682 transitions. [2021-10-08 16:23:25,929 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 6682 transitions. Word has length 2 [2021-10-08 16:23:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:25,929 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 6682 transitions. [2021-10-08 16:23:25,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 6682 transitions. [2021-10-08 16:23:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:23:25,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:25,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:23:25,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:23:25,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:25,933 INFO L82 PathProgramCache]: Analyzing trace with hash 43494, now seen corresponding path program 1 times [2021-10-08 16:23:25,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:25,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966527565] [2021-10-08 16:23:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:25,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:25,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:25,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966527565] [2021-10-08 16:23:25,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966527565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:25,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:23:25,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:23:25,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359669553] [2021-10-08 16:23:25,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:23:25,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:23:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:25,984 INFO L87 Difference]: Start difference. First operand 1821 states and 6682 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:26,044 INFO L93 Difference]: Finished difference Result 1818 states and 6676 transitions. [2021-10-08 16:23:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:26,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:23:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:26,067 INFO L225 Difference]: With dead ends: 1818 [2021-10-08 16:23:26,068 INFO L226 Difference]: Without dead ends: 1818 [2021-10-08 16:23:26,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-10-08 16:23:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1818. [2021-10-08 16:23:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1747 states have (on average 3.8214081282198054) internal successors, (6676), 1817 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6676 transitions. [2021-10-08 16:23:26,156 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6676 transitions. Word has length 2 [2021-10-08 16:23:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:26,157 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 6676 transitions. [2021-10-08 16:23:26,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6676 transitions. [2021-10-08 16:23:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:23:26,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:26,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:23:26,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:23:26,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:26,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1349569, now seen corresponding path program 1 times [2021-10-08 16:23:26,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:26,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391278930] [2021-10-08 16:23:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:26,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:26,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:26,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391278930] [2021-10-08 16:23:26,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391278930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:26,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654001767] [2021-10-08 16:23:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:26,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:26,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:26,233 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) [2021-10-08 16:23:26,254 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 [2021-10-08 16:23:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:26,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:23:26,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:26,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654001767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:26,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:26,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 16:23:26,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729324313] [2021-10-08 16:23:26,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:23:26,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:23:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:23:26,382 INFO L87 Difference]: Start difference. First operand 1818 states and 6676 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:26,658 INFO L93 Difference]: Finished difference Result 5437 states and 19990 transitions. [2021-10-08 16:23:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:23:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:23:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:26,723 INFO L225 Difference]: With dead ends: 5437 [2021-10-08 16:23:26,723 INFO L226 Difference]: Without dead ends: 5437 [2021-10-08 16:23:26,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:23:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2021-10-08 16:23:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 1821. [2021-10-08 16:23:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1750 states have (on average 3.8205714285714287) internal successors, (6686), 1820 states have internal predecessors, (6686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 6686 transitions. [2021-10-08 16:23:26,862 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 6686 transitions. Word has length 3 [2021-10-08 16:23:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:26,863 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 6686 transitions. [2021-10-08 16:23:26,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 6686 transitions. [2021-10-08 16:23:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:23:26,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:26,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:23:26,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 16:23:27,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:27,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:27,081 INFO L82 PathProgramCache]: Analyzing trace with hash 41895752, now seen corresponding path program 1 times [2021-10-08 16:23:27,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:27,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309168076] [2021-10-08 16:23:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:27,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:27,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:27,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309168076] [2021-10-08 16:23:27,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309168076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:27,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:23:27,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:23:27,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298733493] [2021-10-08 16:23:27,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:23:27,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:23:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:27,152 INFO L87 Difference]: Start difference. First operand 1821 states and 6686 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-08 16:23:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:27,245 INFO L93 Difference]: Finished difference Result 1821 states and 6685 transitions. [2021-10-08 16:23:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 4 [2021-10-08 16:23:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:27,271 INFO L225 Difference]: With dead ends: 1821 [2021-10-08 16:23:27,272 INFO L226 Difference]: Without dead ends: 1821 [2021-10-08 16:23:27,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-10-08 16:23:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2021-10-08 16:23:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1750 states have (on average 3.82) internal successors, (6685), 1820 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 6685 transitions. [2021-10-08 16:23:27,360 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 6685 transitions. Word has length 4 [2021-10-08 16:23:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:27,360 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 6685 transitions. [2021-10-08 16:23:27,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-08 16:23:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 6685 transitions. [2021-10-08 16:23:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:23:27,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:27,362 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:23:27,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 16:23:27,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 41839382, now seen corresponding path program 2 times [2021-10-08 16:23:27,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:27,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287384255] [2021-10-08 16:23:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:27,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:27,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:27,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287384255] [2021-10-08 16:23:27,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287384255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:27,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693933269] [2021-10-08 16:23:27,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:23:27,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:27,456 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) [2021-10-08 16:23:27,464 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 [2021-10-08 16:23:27,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:23:27,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:23:27,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:23:27,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693933269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:27,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:23:27,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:23:27,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831414043] [2021-10-08 16:23:27,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:23:27,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:23:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:23:27,586 INFO L87 Difference]: Start difference. First operand 1821 states and 6685 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) [2021-10-08 16:23:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:27,640 INFO L93 Difference]: Finished difference Result 1820 states and 6684 transitions. [2021-10-08 16:23:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:23:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:27,717 INFO L225 Difference]: With dead ends: 1820 [2021-10-08 16:23:27,717 INFO L226 Difference]: Without dead ends: 1820 [2021-10-08 16:23:27,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:23:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-10-08 16:23:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1819. [2021-10-08 16:23:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1749 states have (on average 3.820468839336764) internal successors, (6682), 1818 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 6682 transitions. [2021-10-08 16:23:27,805 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 6682 transitions. Word has length 4 [2021-10-08 16:23:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:27,805 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 6682 transitions. [2021-10-08 16:23:27,805 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) [2021-10-08 16:23:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 6682 transitions. [2021-10-08 16:23:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:23:27,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:27,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:23:27,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-08 16:23:28,026 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 [2021-10-08 16:23:28,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1297079955, now seen corresponding path program 1 times [2021-10-08 16:23:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:28,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267991176] [2021-10-08 16:23:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:28,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:28,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:28,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267991176] [2021-10-08 16:23:28,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267991176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:28,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882886888] [2021-10-08 16:23:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:28,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:28,094 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) [2021-10-08 16:23:28,100 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 [2021-10-08 16:23:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:28,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:23:28,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:28,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882886888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:28,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:23:28,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 16:23:28,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758598719] [2021-10-08 16:23:28,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:23:28,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:23:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:23:28,297 INFO L87 Difference]: Start difference. First operand 1819 states and 6682 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:28,404 INFO L93 Difference]: Finished difference Result 1819 states and 6676 transitions. [2021-10-08 16:23:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:23:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:23:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:28,429 INFO L225 Difference]: With dead ends: 1819 [2021-10-08 16:23:28,429 INFO L226 Difference]: Without dead ends: 1819 [2021-10-08 16:23:28,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:23:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-10-08 16:23:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2021-10-08 16:23:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1749 states have (on average 3.8170383076043453) internal successors, (6676), 1818 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 6676 transitions. [2021-10-08 16:23:28,512 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 6676 transitions. Word has length 5 [2021-10-08 16:23:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:28,512 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 6676 transitions. [2021-10-08 16:23:28,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 6676 transitions. [2021-10-08 16:23:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:23:28,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:28,513 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:23:28,552 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 [2021-10-08 16:23:28,726 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 [2021-10-08 16:23:28,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:28,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1554758073, now seen corresponding path program 1 times [2021-10-08 16:23:28,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:28,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581411708] [2021-10-08 16:23:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:28,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:28,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581411708] [2021-10-08 16:23:28,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581411708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840541464] [2021-10-08 16:23:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:28,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:28,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:28,801 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) [2021-10-08 16:23:28,807 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 [2021-10-08 16:23:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:28,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:23:28,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:29,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840541464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:29,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:29,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:23:29,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989108799] [2021-10-08 16:23:29,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:23:29,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:23:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:23:29,013 INFO L87 Difference]: Start difference. First operand 1819 states and 6676 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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) [2021-10-08 16:23:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:29,384 INFO L93 Difference]: Finished difference Result 5048 states and 18530 transitions. [2021-10-08 16:23:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:23:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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 6 [2021-10-08 16:23:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:29,416 INFO L225 Difference]: With dead ends: 5048 [2021-10-08 16:23:29,417 INFO L226 Difference]: Without dead ends: 5048 [2021-10-08 16:23:29,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:23:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2021-10-08 16:23:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 2237. [2021-10-08 16:23:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2167 states have (on average 4.321642824180895) internal successors, (9365), 2236 states have internal predecessors, (9365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 9365 transitions. [2021-10-08 16:23:29,559 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 9365 transitions. Word has length 6 [2021-10-08 16:23:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:29,559 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 9365 transitions. [2021-10-08 16:23:29,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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) [2021-10-08 16:23:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 9365 transitions. [2021-10-08 16:23:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:23:29,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:29,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:29,597 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 [2021-10-08 16:23:29,776 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 [2021-10-08 16:23:29,777 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:29,778 INFO L82 PathProgramCache]: Analyzing trace with hash 952878603, now seen corresponding path program 1 times [2021-10-08 16:23:29,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:29,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830219572] [2021-10-08 16:23:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:29,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:29,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:29,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830219572] [2021-10-08 16:23:29,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830219572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:29,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731487577] [2021-10-08 16:23:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:29,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:29,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:29,920 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) [2021-10-08 16:23:29,926 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 [2021-10-08 16:23:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:30,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:23:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:30,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:23:30,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-08 16:23:30,132 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:23:30,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:23:30,178 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:23:30,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:23:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:30,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731487577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:30,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:30,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-08 16:23:30,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932046977] [2021-10-08 16:23:30,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:23:30,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:23:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:23:30,194 INFO L87 Difference]: Start difference. First operand 2237 states and 9365 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2021-10-08 16:23:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:30,383 INFO L93 Difference]: Finished difference Result 2236 states and 9362 transitions. [2021-10-08 16:23:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:23:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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 [2021-10-08 16:23:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:30,399 INFO L225 Difference]: With dead ends: 2236 [2021-10-08 16:23:30,399 INFO L226 Difference]: Without dead ends: 2236 [2021-10-08 16:23:30,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:23:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-10-08 16:23:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2236. [2021-10-08 16:23:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2167 states have (on average 4.320258421781264) internal successors, (9362), 2235 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 9362 transitions. [2021-10-08 16:23:30,535 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 9362 transitions. Word has length 7 [2021-10-08 16:23:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:30,536 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 9362 transitions. [2021-10-08 16:23:30,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2021-10-08 16:23:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 9362 transitions. [2021-10-08 16:23:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:23:30,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:30,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:30,565 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 [2021-10-08 16:23:30,751 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 [2021-10-08 16:23:30,752 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:30,754 INFO L82 PathProgramCache]: Analyzing trace with hash 952878629, now seen corresponding path program 1 times [2021-10-08 16:23:30,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:30,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198095823] [2021-10-08 16:23:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:30,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:30,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:30,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198095823] [2021-10-08 16:23:30,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198095823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:30,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743704117] [2021-10-08 16:23:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:30,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:30,934 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) [2021-10-08 16:23:30,946 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 [2021-10-08 16:23:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:23:31,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:31,226 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:23:31,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:23:32,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:23:32,411 INFO L354 Elim1Store]: treesize reduction 294, result has 17.9 percent of original size [2021-10-08 16:23:32,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:23:34,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:23:34,809 INFO L354 Elim1Store]: treesize reduction 204, result has 29.4 percent of original size [2021-10-08 16:23:34,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:23:35,001 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:23:35,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:23:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:35,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743704117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:35,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:35,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-08 16:23:35,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554057530] [2021-10-08 16:23:35,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:23:35,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:23:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:23:35,021 INFO L87 Difference]: Start difference. First operand 2236 states and 9362 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-08 16:23:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:37,116 INFO L93 Difference]: Finished difference Result 2235 states and 9359 transitions. [2021-10-08 16:23:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:23:37,116 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:23:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:37,135 INFO L225 Difference]: With dead ends: 2235 [2021-10-08 16:23:37,135 INFO L226 Difference]: Without dead ends: 2235 [2021-10-08 16:23:37,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 631.1ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:23:37,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-10-08 16:23:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2235. [2021-10-08 16:23:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2167 states have (on average 4.318874019381633) internal successors, (9359), 2234 states have internal predecessors, (9359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 9359 transitions. [2021-10-08 16:23:37,254 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 9359 transitions. Word has length 7 [2021-10-08 16:23:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:37,254 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 9359 transitions. [2021-10-08 16:23:37,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-08 16:23:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 9359 transitions. [2021-10-08 16:23:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:23:37,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:37,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:37,289 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 [2021-10-08 16:23:37,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:37,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash 952878631, now seen corresponding path program 1 times [2021-10-08 16:23:37,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:37,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689448558] [2021-10-08 16:23:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:37,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:37,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:37,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689448558] [2021-10-08 16:23:37,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689448558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:37,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419868894] [2021-10-08 16:23:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:37,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:37,672 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) [2021-10-08 16:23:37,677 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 [2021-10-08 16:23:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:37,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:23:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:37,940 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:23:37,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:23:38,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:23:38,906 INFO L354 Elim1Store]: treesize reduction 294, result has 17.9 percent of original size [2021-10-08 16:23:38,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:23:40,309 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:23:40,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 103 [2021-10-08 16:23:42,703 INFO L354 Elim1Store]: treesize reduction 204, result has 29.4 percent of original size [2021-10-08 16:23:42,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:23:42,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:23:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:42,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419868894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:42,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-10-08 16:23:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274352975] [2021-10-08 16:23:42,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:23:42,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:23:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:23:42,865 INFO L87 Difference]: Start difference. First operand 2235 states and 9359 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) [2021-10-08 16:23:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:48,642 INFO L93 Difference]: Finished difference Result 2234 states and 9356 transitions. [2021-10-08 16:23:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:23:48,643 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 7 [2021-10-08 16:23:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:48,657 INFO L225 Difference]: With dead ends: 2234 [2021-10-08 16:23:48,658 INFO L226 Difference]: Without dead ends: 2234 [2021-10-08 16:23:48,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1364.7ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:23:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-08 16:23:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2234. [2021-10-08 16:23:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2167 states have (on average 4.3174896169820025) internal successors, (9356), 2233 states have internal predecessors, (9356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 9356 transitions. [2021-10-08 16:23:48,746 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 9356 transitions. Word has length 7 [2021-10-08 16:23:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:48,747 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 9356 transitions. [2021-10-08 16:23:48,747 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) [2021-10-08 16:23:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 9356 transitions. [2021-10-08 16:23:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:23:48,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:48,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:48,782 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 [2021-10-08 16:23:48,961 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,SelfDestructingSolverStorable9 [2021-10-08 16:23:48,962 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash 952878632, now seen corresponding path program 1 times [2021-10-08 16:23:48,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:48,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417214664] [2021-10-08 16:23:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:48,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:49,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417214664] [2021-10-08 16:23:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417214664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967612699] [2021-10-08 16:23:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:49,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:49,049 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) [2021-10-08 16:23:49,061 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 [2021-10-08 16:23:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:49,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:23:49,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:49,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:23:49,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:23:49,257 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:23:49,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:23:49,288 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:23:49,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:23:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:49,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967612699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:49,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:49,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 16:23:49,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311713939] [2021-10-08 16:23:49,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:23:49,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:23:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:23:49,302 INFO L87 Difference]: Start difference. First operand 2234 states and 9356 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-10-08 16:23:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:49,482 INFO L93 Difference]: Finished difference Result 2233 states and 9353 transitions. [2021-10-08 16:23:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:23:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 7 [2021-10-08 16:23:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:49,497 INFO L225 Difference]: With dead ends: 2233 [2021-10-08 16:23:49,497 INFO L226 Difference]: Without dead ends: 2233 [2021-10-08 16:23:49,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:23:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-10-08 16:23:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2233. [2021-10-08 16:23:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 2167 states have (on average 4.316105214582372) internal successors, (9353), 2232 states have internal predecessors, (9353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 9353 transitions. [2021-10-08 16:23:49,581 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 9353 transitions. Word has length 7 [2021-10-08 16:23:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:49,582 INFO L470 AbstractCegarLoop]: Abstraction has 2233 states and 9353 transitions. [2021-10-08 16:23:49,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-10-08 16:23:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 9353 transitions. [2021-10-08 16:23:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:23:49,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:49,583 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-08 16:23:49,624 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 [2021-10-08 16:23:49,797 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,SelfDestructingSolverStorable10 [2021-10-08 16:23:49,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash 900966980, now seen corresponding path program 2 times [2021-10-08 16:23:49,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:49,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5814408] [2021-10-08 16:23:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:49,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:23:49,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:49,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5814408] [2021-10-08 16:23:49,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5814408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:49,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748959646] [2021-10-08 16:23:49,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:23:49,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:49,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:49,838 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) [2021-10-08 16:23:49,859 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 [2021-10-08 16:23:49,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:23:49,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:49,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:23:49,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:23:50,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748959646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:50,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:23:50,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2021-10-08 16:23:50,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401195883] [2021-10-08 16:23:50,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:23:50,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:23:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:23:50,014 INFO L87 Difference]: Start difference. First operand 2233 states and 9353 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:50,075 INFO L93 Difference]: Finished difference Result 2035 states and 8621 transitions. [2021-10-08 16:23:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:50,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:23:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:50,089 INFO L225 Difference]: With dead ends: 2035 [2021-10-08 16:23:50,090 INFO L226 Difference]: Without dead ends: 2035 [2021-10-08 16:23:50,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:23:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-10-08 16:23:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1621. [2021-10-08 16:23:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1566 states have (on average 3.793103448275862) internal successors, (5940), 1620 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 5940 transitions. [2021-10-08 16:23:50,152 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 5940 transitions. Word has length 7 [2021-10-08 16:23:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:50,152 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 5940 transitions. [2021-10-08 16:23:50,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 5940 transitions. [2021-10-08 16:23:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:23:50,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:50,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:50,190 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 [2021-10-08 16:23:50,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:50,368 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash -444159492, now seen corresponding path program 1 times [2021-10-08 16:23:50,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:50,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583515103] [2021-10-08 16:23:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:50,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:23:50,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:50,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583515103] [2021-10-08 16:23:50,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583515103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:23:50,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:23:50,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:23:50,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783288374] [2021-10-08 16:23:50,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:23:50,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:23:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:50,409 INFO L87 Difference]: Start difference. First operand 1621 states and 5940 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:23:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:50,469 INFO L93 Difference]: Finished difference Result 2816 states and 10359 transitions. [2021-10-08 16:23:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:23:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 12 [2021-10-08 16:23:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:50,486 INFO L225 Difference]: With dead ends: 2816 [2021-10-08 16:23:50,486 INFO L226 Difference]: Without dead ends: 2816 [2021-10-08 16:23:50,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:23:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-10-08 16:23:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1817. [2021-10-08 16:23:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1762 states have (on average 4.341657207718502) internal successors, (7650), 1816 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7650 transitions. [2021-10-08 16:23:50,582 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7650 transitions. Word has length 12 [2021-10-08 16:23:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:50,583 INFO L470 AbstractCegarLoop]: Abstraction has 1817 states and 7650 transitions. [2021-10-08 16:23:50,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-10-08 16:23:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7650 transitions. [2021-10-08 16:23:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:23:50,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:50,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:50,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 16:23:50,586 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:50,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:50,587 INFO L82 PathProgramCache]: Analyzing trace with hash -444159500, now seen corresponding path program 1 times [2021-10-08 16:23:50,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:50,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419628409] [2021-10-08 16:23:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:50,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:50,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:50,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419628409] [2021-10-08 16:23:50,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419628409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:50,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347111314] [2021-10-08 16:23:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:50,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:50,681 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) [2021-10-08 16:23:50,687 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 [2021-10-08 16:23:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:50,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:23:50,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:50,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347111314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:50,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:50,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:23:50,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747157796] [2021-10-08 16:23:50,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:23:50,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:23:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:23:50,912 INFO L87 Difference]: Start difference. First operand 1817 states and 7650 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-10-08 16:23:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:51,096 INFO L93 Difference]: Finished difference Result 2446 states and 9728 transitions. [2021-10-08 16:23:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:23:51,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 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 12 [2021-10-08 16:23:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:51,109 INFO L225 Difference]: With dead ends: 2446 [2021-10-08 16:23:51,109 INFO L226 Difference]: Without dead ends: 2446 [2021-10-08 16:23:51,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:23:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-10-08 16:23:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2231. [2021-10-08 16:23:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2176 states have (on average 4.2072610294117645) internal successors, (9155), 2230 states have internal predecessors, (9155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 9155 transitions. [2021-10-08 16:23:51,189 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 9155 transitions. Word has length 12 [2021-10-08 16:23:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:51,189 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 9155 transitions. [2021-10-08 16:23:51,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-10-08 16:23:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 9155 transitions. [2021-10-08 16:23:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:23:51,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:51,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:51,227 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 [2021-10-08 16:23:51,405 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,SelfDestructingSolverStorable13 [2021-10-08 16:23:51,405 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1216107289, now seen corresponding path program 1 times [2021-10-08 16:23:51,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:51,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466825925] [2021-10-08 16:23:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:51,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:51,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:51,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466825925] [2021-10-08 16:23:51,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466825925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:51,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314822840] [2021-10-08 16:23:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:51,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:51,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:51,468 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) [2021-10-08 16:23:51,482 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 [2021-10-08 16:23:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:51,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:23:51,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:51,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314822840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:51,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:51,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 16:23:51,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637131862] [2021-10-08 16:23:51,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:23:51,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:23:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:23:51,710 INFO L87 Difference]: Start difference. First operand 2231 states and 9155 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 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) [2021-10-08 16:23:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:51,864 INFO L93 Difference]: Finished difference Result 2054 states and 8328 transitions. [2021-10-08 16:23:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:23:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 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 13 [2021-10-08 16:23:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:51,875 INFO L225 Difference]: With dead ends: 2054 [2021-10-08 16:23:51,876 INFO L226 Difference]: Without dead ends: 2054 [2021-10-08 16:23:51,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:23:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-10-08 16:23:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2001. [2021-10-08 16:23:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1946 states have (on average 4.2255909558067835) internal successors, (8223), 2000 states have internal predecessors, (8223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 8223 transitions. [2021-10-08 16:23:51,943 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 8223 transitions. Word has length 13 [2021-10-08 16:23:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:51,944 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 8223 transitions. [2021-10-08 16:23:51,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 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) [2021-10-08 16:23:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 8223 transitions. [2021-10-08 16:23:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:23:51,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:51,945 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:51,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-08 16:23:52,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:52,161 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash -121630665, now seen corresponding path program 2 times [2021-10-08 16:23:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:52,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181419245] [2021-10-08 16:23:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:52,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:52,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:52,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181419245] [2021-10-08 16:23:52,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181419245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:52,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761652868] [2021-10-08 16:23:52,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:23:52,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:52,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:52,606 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) [2021-10-08 16:23:52,613 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 [2021-10-08 16:23:52,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:23:52,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:52,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:23:52,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:52,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:52,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:52,946 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:23:52,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:23:53,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:23:54,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:54,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:54,183 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:23:54,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:23:55,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:23:55,906 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:23:55,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-10-08 16:23:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:57,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:23:57,650 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:23:57,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:23:57,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:23:57,907 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:23:57,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-08 16:23:57,962 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:23:57,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:23:58,013 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:23:58,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:23:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:23:58,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761652868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:58,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 16:23:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63743378] [2021-10-08 16:23:58,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:23:58,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:23:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:23:58,058 INFO L87 Difference]: Start difference. First operand 2001 states and 8223 transitions. Second operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:59,044 INFO L93 Difference]: Finished difference Result 2280 states and 8976 transitions. [2021-10-08 16:23:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:23:59,045 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:23:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:59,054 INFO L225 Difference]: With dead ends: 2280 [2021-10-08 16:23:59,054 INFO L226 Difference]: Without dead ends: 2280 [2021-10-08 16:23:59,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 956.2ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:23:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-10-08 16:23:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2001. [2021-10-08 16:23:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1946 states have (on average 4.220452209660842) internal successors, (8213), 2000 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 8213 transitions. [2021-10-08 16:23:59,134 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 8213 transitions. Word has length 15 [2021-10-08 16:23:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:59,134 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 8213 transitions. [2021-10-08 16:23:59,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 8213 transitions. [2021-10-08 16:23:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:23:59,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:59,139 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:23:59,178 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 [2021-10-08 16:23:59,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-08 16:23:59,353 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:23:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:59,354 INFO L82 PathProgramCache]: Analyzing trace with hash -121630663, now seen corresponding path program 1 times [2021-10-08 16:23:59,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:59,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204747113] [2021-10-08 16:23:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:59,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:23:59,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:59,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204747113] [2021-10-08 16:23:59,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204747113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:59,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992214362] [2021-10-08 16:23:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:59,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:59,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:59,707 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) [2021-10-08 16:23:59,708 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 [2021-10-08 16:23:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:59,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:23:59,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:59,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:24:00,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:24:00,131 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:24:00,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:24:00,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:00,217 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:00,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:24:00,269 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:00,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:00,328 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:00,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:24:00,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992214362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:00,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:00,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-10-08 16:24:00,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190417469] [2021-10-08 16:24:00,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:24:00,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:24:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:24:00,374 INFO L87 Difference]: Start difference. First operand 2001 states and 8213 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:01,721 INFO L93 Difference]: Finished difference Result 3939 states and 16086 transitions. [2021-10-08 16:24:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:24:01,722 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:24:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:01,741 INFO L225 Difference]: With dead ends: 3939 [2021-10-08 16:24:01,742 INFO L226 Difference]: Without dead ends: 3939 [2021-10-08 16:24:01,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 965.1ms TimeCoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:24:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-10-08 16:24:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2001. [2021-10-08 16:24:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1946 states have (on average 4.215313463514902) internal successors, (8203), 2000 states have internal predecessors, (8203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 8203 transitions. [2021-10-08 16:24:01,836 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 8203 transitions. Word has length 15 [2021-10-08 16:24:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:01,836 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 8203 transitions. [2021-10-08 16:24:01,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 8203 transitions. [2021-10-08 16:24:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:24:01,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:01,837 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:01,874 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 [2021-10-08 16:24:02,050 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,SelfDestructingSolverStorable16 [2021-10-08 16:24:02,051 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash -121630661, now seen corresponding path program 1 times [2021-10-08 16:24:02,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:02,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726227880] [2021-10-08 16:24:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:02,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:02,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:02,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726227880] [2021-10-08 16:24:02,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726227880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:02,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534682233] [2021-10-08 16:24:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:02,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:02,387 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) [2021-10-08 16:24:02,394 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 [2021-10-08 16:24:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:02,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:24:02,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:02,794 INFO L354 Elim1Store]: treesize reduction 354, result has 12.4 percent of original size [2021-10-08 16:24:02,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 146 treesize of output 170 [2021-10-08 16:24:06,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:24:06,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:06,640 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:24:06,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 94 treesize of output 140 [2021-10-08 16:24:08,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:10,814 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:10,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 123 [2021-10-08 16:24:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:13,400 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:24:13,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 120 treesize of output 186 [2021-10-08 16:24:13,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:13,664 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:13,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:24:13,720 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:13,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:13,762 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:13,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:24:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:13,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534682233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:13,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:13,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-08 16:24:13,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204700696] [2021-10-08 16:24:13,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:24:13,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:24:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:24:13,794 INFO L87 Difference]: Start difference. First operand 2001 states and 8203 transitions. Second operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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) [2021-10-08 16:24:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:14,801 INFO L93 Difference]: Finished difference Result 2260 states and 8914 transitions. [2021-10-08 16:24:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:24:14,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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 15 [2021-10-08 16:24:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:14,809 INFO L225 Difference]: With dead ends: 2260 [2021-10-08 16:24:14,809 INFO L226 Difference]: Without dead ends: 2260 [2021-10-08 16:24:14,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 874.3ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:24:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-10-08 16:24:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2001. [2021-10-08 16:24:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1946 states have (on average 4.210174717368962) internal successors, (8193), 2000 states have internal predecessors, (8193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 8193 transitions. [2021-10-08 16:24:14,878 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 8193 transitions. Word has length 15 [2021-10-08 16:24:14,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:14,879 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 8193 transitions. [2021-10-08 16:24:14,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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) [2021-10-08 16:24:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 8193 transitions. [2021-10-08 16:24:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:24:14,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:14,880 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:14,918 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 [2021-10-08 16:24:15,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:24:15,094 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:15,095 INFO L82 PathProgramCache]: Analyzing trace with hash -121630658, now seen corresponding path program 1 times [2021-10-08 16:24:15,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:15,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617770875] [2021-10-08 16:24:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:15,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:24:15,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:15,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617770875] [2021-10-08 16:24:15,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617770875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:15,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533735416] [2021-10-08 16:24:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:15,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:15,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:15,443 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) [2021-10-08 16:24:15,448 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 [2021-10-08 16:24:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:15,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:24:15,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:15,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:24:15,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:24:15,933 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:24:15,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:24:15,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:16,007 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:24:16,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:24:16,059 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:16,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:16,117 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:16,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:24:16,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533735416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:16,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:16,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-10-08 16:24:16,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696695876] [2021-10-08 16:24:16,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:24:16,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:24:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:24:16,153 INFO L87 Difference]: Start difference. First operand 2001 states and 8193 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:17,481 INFO L93 Difference]: Finished difference Result 3899 states and 15962 transitions. [2021-10-08 16:24:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:24:17,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:24:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:17,498 INFO L225 Difference]: With dead ends: 3899 [2021-10-08 16:24:17,498 INFO L226 Difference]: Without dead ends: 3899 [2021-10-08 16:24:17,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 989.5ms TimeCoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:24:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-10-08 16:24:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 2001. [2021-10-08 16:24:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1946 states have (on average 4.205035971223022) internal successors, (8183), 2000 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 8183 transitions. [2021-10-08 16:24:17,583 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 8183 transitions. Word has length 15 [2021-10-08 16:24:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:17,583 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 8183 transitions. [2021-10-08 16:24:17,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 8183 transitions. [2021-10-08 16:24:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:17,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:17,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:17,622 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 [2021-10-08 16:24:17,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:17,801 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:17,802 INFO L82 PathProgramCache]: Analyzing trace with hash 848519868, now seen corresponding path program 1 times [2021-10-08 16:24:17,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:17,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011627931] [2021-10-08 16:24:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:17,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:24:17,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:17,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011627931] [2021-10-08 16:24:17,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011627931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:24:17,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:24:17,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:24:17,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683646318] [2021-10-08 16:24:17,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:24:17,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:17,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:24:17,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:24:17,840 INFO L87 Difference]: Start difference. First operand 2001 states and 8183 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-08 16:24:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:17,888 INFO L93 Difference]: Finished difference Result 3104 states and 13006 transitions. [2021-10-08 16:24:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:24:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 16 [2021-10-08 16:24:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:17,902 INFO L225 Difference]: With dead ends: 3104 [2021-10-08 16:24:17,902 INFO L226 Difference]: Without dead ends: 3104 [2021-10-08 16:24:17,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:24:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-10-08 16:24:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2881. [2021-10-08 16:24:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2826 states have (on average 4.369072894550602) internal successors, (12347), 2880 states have internal predecessors, (12347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 12347 transitions. [2021-10-08 16:24:18,025 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 12347 transitions. Word has length 16 [2021-10-08 16:24:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:18,025 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 12347 transitions. [2021-10-08 16:24:18,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-08 16:24:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 12347 transitions. [2021-10-08 16:24:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:18,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:18,026 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:18,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 16:24:18,026 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:18,027 INFO L82 PathProgramCache]: Analyzing trace with hash 192352004, now seen corresponding path program 2 times [2021-10-08 16:24:18,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:18,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538784293] [2021-10-08 16:24:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:18,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:24:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538784293] [2021-10-08 16:24:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538784293] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:24:18,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:24:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:24:18,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548735984] [2021-10-08 16:24:18,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:24:18,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:24:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:24:18,076 INFO L87 Difference]: Start difference. First operand 2881 states and 12347 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-08 16:24:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:18,139 INFO L93 Difference]: Finished difference Result 4776 states and 20712 transitions. [2021-10-08 16:24:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:24:18,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 16 [2021-10-08 16:24:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:18,161 INFO L225 Difference]: With dead ends: 4776 [2021-10-08 16:24:18,161 INFO L226 Difference]: Without dead ends: 4776 [2021-10-08 16:24:18,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:24:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2021-10-08 16:24:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4297. [2021-10-08 16:24:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4242 states have (on average 4.478783592644978) internal successors, (18999), 4296 states have internal predecessors, (18999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 18999 transitions. [2021-10-08 16:24:18,308 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 18999 transitions. Word has length 16 [2021-10-08 16:24:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 18999 transitions. [2021-10-08 16:24:18,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-08 16:24:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 18999 transitions. [2021-10-08 16:24:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:18,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:18,311 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:18,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 16:24:18,312 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:18,313 INFO L82 PathProgramCache]: Analyzing trace with hash 524424037, now seen corresponding path program 1 times [2021-10-08 16:24:18,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:18,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693958695] [2021-10-08 16:24:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:18,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:18,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:18,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693958695] [2021-10-08 16:24:18,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693958695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:18,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200864213] [2021-10-08 16:24:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:18,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:18,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:18,765 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) [2021-10-08 16:24:18,766 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 [2021-10-08 16:24:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:19,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:24:19,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:19,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:19,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:19,256 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:24:19,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 198 [2021-10-08 16:24:20,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:24:20,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:20,723 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:24:20,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-08 16:24:22,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:22,352 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:24:22,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 98 [2021-10-08 16:24:23,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:23,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:23,955 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:24:23,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-08 16:24:24,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:24,274 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-08 16:24:24,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-10-08 16:24:24,335 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:24,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:24,410 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:24,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:24,472 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:24:24,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:24:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:24,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200864213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:24,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:24,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-08 16:24:24,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812403193] [2021-10-08 16:24:24,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:24:24,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:24:24,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:24:24,479 INFO L87 Difference]: Start difference. First operand 4297 states and 18999 transitions. Second operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:25,567 INFO L93 Difference]: Finished difference Result 6455 states and 25018 transitions. [2021-10-08 16:24:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:24:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:24:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:25,591 INFO L225 Difference]: With dead ends: 6455 [2021-10-08 16:24:25,592 INFO L226 Difference]: Without dead ends: 6455 [2021-10-08 16:24:25,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 891.7ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:24:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2021-10-08 16:24:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 4297. [2021-10-08 16:24:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4242 states have (on average 4.378830740216879) internal successors, (18575), 4296 states have internal predecessors, (18575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 18575 transitions. [2021-10-08 16:24:25,756 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 18575 transitions. Word has length 16 [2021-10-08 16:24:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:25,757 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 18575 transitions. [2021-10-08 16:24:25,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 18575 transitions. [2021-10-08 16:24:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:25,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:25,758 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:25,798 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 [2021-10-08 16:24:25,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 16:24:25,974 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:25,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:25,975 INFO L82 PathProgramCache]: Analyzing trace with hash 524424039, now seen corresponding path program 1 times [2021-10-08 16:24:25,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:25,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21698003] [2021-10-08 16:24:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:25,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:24:26,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:26,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21698003] [2021-10-08 16:24:26,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21698003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:26,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737525205] [2021-10-08 16:24:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:26,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:26,403 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) [2021-10-08 16:24:26,405 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 [2021-10-08 16:24:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:26,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:24:26,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:26,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:24:26,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:24:26,995 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:24:26,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:24:27,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:27,081 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:27,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:24:27,142 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:27,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:27,252 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:27,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:27,354 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:27,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:24:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:24:27,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737525205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:27,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:27,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-10-08 16:24:27,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429006921] [2021-10-08 16:24:27,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:24:27,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:24:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:24:27,378 INFO L87 Difference]: Start difference. First operand 4297 states and 18575 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:29,115 INFO L93 Difference]: Finished difference Result 11369 states and 44526 transitions. [2021-10-08 16:24:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:24:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:24:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:29,154 INFO L225 Difference]: With dead ends: 11369 [2021-10-08 16:24:29,154 INFO L226 Difference]: Without dead ends: 11369 [2021-10-08 16:24:29,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1205.4ms TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:24:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11369 states. [2021-10-08 16:24:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11369 to 4297. [2021-10-08 16:24:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4242 states have (on average 4.278877887788779) internal successors, (18151), 4296 states have internal predecessors, (18151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 18151 transitions. [2021-10-08 16:24:29,363 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 18151 transitions. Word has length 16 [2021-10-08 16:24:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:29,364 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 18151 transitions. [2021-10-08 16:24:29,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 18151 transitions. [2021-10-08 16:24:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:29,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:29,365 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:29,400 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 [2021-10-08 16:24:29,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:29,578 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:29,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:29,579 INFO L82 PathProgramCache]: Analyzing trace with hash 524424041, now seen corresponding path program 1 times [2021-10-08 16:24:29,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:29,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032321492] [2021-10-08 16:24:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:29,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:30,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:30,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032321492] [2021-10-08 16:24:30,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032321492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:30,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978256102] [2021-10-08 16:24:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:30,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:30,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:30,044 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) [2021-10-08 16:24:30,045 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 [2021-10-08 16:24:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:30,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:24:30,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:30,571 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:24:30,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-08 16:24:31,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:24:32,030 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:24:32,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-08 16:24:33,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:33,506 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:33,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 98 [2021-10-08 16:24:35,022 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:24:35,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-08 16:24:35,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:24:35,442 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:35,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-10-08 16:24:35,503 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:35,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:24:35,534 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:24:35,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:24:35,595 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:24:35,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:24:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978256102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:35,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:35,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-10-08 16:24:35,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588097139] [2021-10-08 16:24:35,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:24:35,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:24:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:24:35,601 INFO L87 Difference]: Start difference. First operand 4297 states and 18151 transitions. Second operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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) [2021-10-08 16:24:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:36,627 INFO L93 Difference]: Finished difference Result 5607 states and 21600 transitions. [2021-10-08 16:24:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:24:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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 16 [2021-10-08 16:24:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:36,645 INFO L225 Difference]: With dead ends: 5607 [2021-10-08 16:24:36,645 INFO L226 Difference]: Without dead ends: 5607 [2021-10-08 16:24:36,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 906.5ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:24:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-10-08 16:24:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4297. [2021-10-08 16:24:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4242 states have (on average 4.178925035360679) internal successors, (17727), 4296 states have internal predecessors, (17727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 17727 transitions. [2021-10-08 16:24:36,802 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 17727 transitions. Word has length 16 [2021-10-08 16:24:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:36,802 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 17727 transitions. [2021-10-08 16:24:36,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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) [2021-10-08 16:24:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 17727 transitions. [2021-10-08 16:24:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:36,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:36,804 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:36,858 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 [2021-10-08 16:24:37,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:37,018 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:37,018 INFO L82 PathProgramCache]: Analyzing trace with hash 524424044, now seen corresponding path program 1 times [2021-10-08 16:24:37,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:37,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276686373] [2021-10-08 16:24:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:37,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:24:37,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276686373] [2021-10-08 16:24:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276686373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705673940] [2021-10-08 16:24:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:37,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:37,427 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) [2021-10-08 16:24:37,441 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 [2021-10-08 16:24:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:24:37,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:37,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:24:38,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:24:38,086 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:24:38,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:24:38,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:38,181 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:38,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:24:38,244 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:38,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:24:38,312 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:38,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:24:38,417 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:38,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:24:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:24:38,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705673940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:38,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:38,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-10-08 16:24:38,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846215488] [2021-10-08 16:24:38,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:24:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:24:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:24:38,441 INFO L87 Difference]: Start difference. First operand 4297 states and 17727 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:40,165 INFO L93 Difference]: Finished difference Result 9673 states and 37690 transitions. [2021-10-08 16:24:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:24:40,165 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:24:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:40,197 INFO L225 Difference]: With dead ends: 9673 [2021-10-08 16:24:40,198 INFO L226 Difference]: Without dead ends: 9673 [2021-10-08 16:24:40,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1209.9ms TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:24:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9673 states. [2021-10-08 16:24:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9673 to 4297. [2021-10-08 16:24:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4242 states have (on average 4.078972182932579) internal successors, (17303), 4296 states have internal predecessors, (17303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 17303 transitions. [2021-10-08 16:24:40,390 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 17303 transitions. Word has length 16 [2021-10-08 16:24:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:40,391 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 17303 transitions. [2021-10-08 16:24:40,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 17303 transitions. [2021-10-08 16:24:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:40,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:40,392 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:40,434 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 [2021-10-08 16:24:40,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-08 16:24:40,606 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 524425068, now seen corresponding path program 1 times [2021-10-08 16:24:40,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:40,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272231415] [2021-10-08 16:24:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:40,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:24:40,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:40,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272231415] [2021-10-08 16:24:40,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272231415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492085881] [2021-10-08 16:24:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:40,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:40,653 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) [2021-10-08 16:24:40,670 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 [2021-10-08 16:24:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:41,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:24:41,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:24:41,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492085881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:24:41,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:24:41,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-08 16:24:41,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489539578] [2021-10-08 16:24:41,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:24:41,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:24:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:24:41,110 INFO L87 Difference]: Start difference. First operand 4297 states and 17303 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-08 16:24:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:41,150 INFO L93 Difference]: Finished difference Result 4324 states and 16924 transitions. [2021-10-08 16:24:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:24:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 16 [2021-10-08 16:24:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:41,164 INFO L225 Difference]: With dead ends: 4324 [2021-10-08 16:24:41,164 INFO L226 Difference]: Without dead ends: 4324 [2021-10-08 16:24:41,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:24:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2021-10-08 16:24:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 3857. [2021-10-08 16:24:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3811 states have (on average 4.0784570978745736) internal successors, (15543), 3856 states have internal predecessors, (15543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 15543 transitions. [2021-10-08 16:24:41,355 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 15543 transitions. Word has length 16 [2021-10-08 16:24:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:41,357 INFO L470 AbstractCegarLoop]: Abstraction has 3857 states and 15543 transitions. [2021-10-08 16:24:41,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-08 16:24:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 15543 transitions. [2021-10-08 16:24:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:24:41,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:41,358 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:41,401 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 [2021-10-08 16:24:41,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:24:41,572 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:41,574 INFO L82 PathProgramCache]: Analyzing trace with hash 524425060, now seen corresponding path program 1 times [2021-10-08 16:24:41,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:41,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500152146] [2021-10-08 16:24:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:41,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:24:41,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:41,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500152146] [2021-10-08 16:24:41,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500152146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:41,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908098796] [2021-10-08 16:24:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:41,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:41,661 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) [2021-10-08 16:24:41,661 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 [2021-10-08 16:24:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:24:42,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:24:42,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908098796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:42,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:42,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:24:42,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235418398] [2021-10-08 16:24:42,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:24:42,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:24:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:24:42,240 INFO L87 Difference]: Start difference. First operand 3857 states and 15543 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 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) [2021-10-08 16:24:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:42,609 INFO L93 Difference]: Finished difference Result 6230 states and 24279 transitions. [2021-10-08 16:24:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:24:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 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 16 [2021-10-08 16:24:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:42,627 INFO L225 Difference]: With dead ends: 6230 [2021-10-08 16:24:42,627 INFO L226 Difference]: Without dead ends: 6230 [2021-10-08 16:24:42,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:24:42,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-10-08 16:24:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 5169. [2021-10-08 16:24:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5123 states have (on average 4.137029084520789) internal successors, (21194), 5168 states have internal predecessors, (21194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 21194 transitions. [2021-10-08 16:24:42,735 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 21194 transitions. Word has length 16 [2021-10-08 16:24:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:42,736 INFO L470 AbstractCegarLoop]: Abstraction has 5169 states and 21194 transitions. [2021-10-08 16:24:42,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 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) [2021-10-08 16:24:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 21194 transitions. [2021-10-08 16:24:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:24:42,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:42,737 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:42,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-08 16:24:42,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:24:42,946 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1915801172, now seen corresponding path program 1 times [2021-10-08 16:24:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232936174] [2021-10-08 16:24:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:42,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:24:42,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:42,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232936174] [2021-10-08 16:24:42,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232936174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:42,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133365269] [2021-10-08 16:24:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:42,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:42,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:43,002 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) [2021-10-08 16:24:43,008 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 [2021-10-08 16:24:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:43,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:24:43,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 16:24:43,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133365269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:43,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:43,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:24:43,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641432365] [2021-10-08 16:24:43,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:24:43,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:24:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:24:43,534 INFO L87 Difference]: Start difference. First operand 5169 states and 21194 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2021-10-08 16:24:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:43,881 INFO L93 Difference]: Finished difference Result 7700 states and 31156 transitions. [2021-10-08 16:24:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:24:43,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 19 [2021-10-08 16:24:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:43,913 INFO L225 Difference]: With dead ends: 7700 [2021-10-08 16:24:43,913 INFO L226 Difference]: Without dead ends: 7700 [2021-10-08 16:24:43,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:24:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7700 states. [2021-10-08 16:24:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7700 to 6553. [2021-10-08 16:24:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6553 states, 6507 states have (on average 4.2961426156446905) internal successors, (27955), 6552 states have internal predecessors, (27955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 27955 transitions. [2021-10-08 16:24:44,176 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 27955 transitions. Word has length 19 [2021-10-08 16:24:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:44,176 INFO L470 AbstractCegarLoop]: Abstraction has 6553 states and 27955 transitions. [2021-10-08 16:24:44,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2021-10-08 16:24:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 27955 transitions. [2021-10-08 16:24:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:24:44,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:44,179 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:24:44,208 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 [2021-10-08 16:24:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:24:44,392 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:24:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash 485377447, now seen corresponding path program 2 times [2021-10-08 16:24:44,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:44,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966403232] [2021-10-08 16:24:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:44,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:24:44,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:44,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966403232] [2021-10-08 16:24:44,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966403232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:44,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126619832] [2021-10-08 16:24:44,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:24:44,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:44,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:44,896 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) [2021-10-08 16:24:44,897 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 [2021-10-08 16:24:45,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:24:45,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:45,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:24:45,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:45,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:45,549 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:24:45,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:24:46,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:24:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:47,038 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:24:47,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:24:47,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:49,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:49,266 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:24:49,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-10-08 16:24:50,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:50,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:24:51,052 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:24:51,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:24:51,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:51,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:51,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:24:51,528 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:24:51,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 199 [2021-10-08 16:24:51,697 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:24:51,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:24:51,800 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:24:51,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:24:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:24:51,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126619832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:51,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:51,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 16:24:51,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38378214] [2021-10-08 16:24:51,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:24:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:24:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:24:51,847 INFO L87 Difference]: Start difference. First operand 6553 states and 27955 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:59,863 INFO L93 Difference]: Finished difference Result 10135 states and 41178 transitions. [2021-10-08 16:24:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:24:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:24:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:59,896 INFO L225 Difference]: With dead ends: 10135 [2021-10-08 16:24:59,896 INFO L226 Difference]: Without dead ends: 10135 [2021-10-08 16:24:59,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 5848.4ms TimeCoverageRelationStatistics Valid=890, Invalid=4080, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:24:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2021-10-08 16:25:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 6659. [2021-10-08 16:25:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 6613 states have (on average 4.29305912596401) internal successors, (28390), 6658 states have internal predecessors, (28390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 28390 transitions. [2021-10-08 16:25:00,102 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 28390 transitions. Word has length 19 [2021-10-08 16:25:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:00,102 INFO L470 AbstractCegarLoop]: Abstraction has 6659 states and 28390 transitions. [2021-10-08 16:25:00,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 28390 transitions. [2021-10-08 16:25:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:25:00,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:00,103 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:00,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-08 16:25:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:25:00,304 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:00,306 INFO L82 PathProgramCache]: Analyzing trace with hash 485377449, now seen corresponding path program 1 times [2021-10-08 16:25:00,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:00,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662185139] [2021-10-08 16:25:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:00,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:25:00,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:00,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662185139] [2021-10-08 16:25:00,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662185139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:00,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131318566] [2021-10-08 16:25:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:00,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:00,977 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) [2021-10-08 16:25:00,978 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 [2021-10-08 16:25:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:01,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:25:01,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:01,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:25:01,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:25:01,771 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:25:01,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:25:01,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:01,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:01,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:02,008 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:25:02,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:25:02,168 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:25:02,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:25:02,303 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:25:02,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:25:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:25:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131318566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:02,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:02,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-08 16:25:02,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351445879] [2021-10-08 16:25:02,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:25:02,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:25:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:25:02,352 INFO L87 Difference]: Start difference. First operand 6659 states and 28390 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:11,959 INFO L93 Difference]: Finished difference Result 22133 states and 87028 transitions. [2021-10-08 16:25:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-08 16:25:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:25:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:12,046 INFO L225 Difference]: With dead ends: 22133 [2021-10-08 16:25:12,046 INFO L226 Difference]: Without dead ends: 22133 [2021-10-08 16:25:12,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2291 ImplicationChecksByTransitivity, 7110.6ms TimeCoverageRelationStatistics Valid=1280, Invalid=7092, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:25:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22133 states. [2021-10-08 16:25:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22133 to 6761. [2021-10-08 16:25:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6715 states have (on average 4.2844378257632165) internal successors, (28770), 6760 states have internal predecessors, (28770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 28770 transitions. [2021-10-08 16:25:12,337 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 28770 transitions. Word has length 19 [2021-10-08 16:25:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 6761 states and 28770 transitions. [2021-10-08 16:25:12,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 28770 transitions. [2021-10-08 16:25:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:25:12,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:12,340 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:12,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:25:12,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:12,541 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:12,542 INFO L82 PathProgramCache]: Analyzing trace with hash 485377451, now seen corresponding path program 1 times [2021-10-08 16:25:12,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:12,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182540214] [2021-10-08 16:25:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:12,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:25:13,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:13,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182540214] [2021-10-08 16:25:13,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182540214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:13,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544563580] [2021-10-08 16:25:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:13,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:13,062 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) [2021-10-08 16:25:13,066 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 [2021-10-08 16:25:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:13,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:25:13,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:13,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:13,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:13,811 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:25:13,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:25:15,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:25:15,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:15,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:15,562 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:25:15,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:25:16,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:17,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:18,110 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:25:18,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 95 [2021-10-08 16:25:20,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:20,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:20,186 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:25:20,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:25:20,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:20,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:20,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:25:20,603 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:25:20,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 208 treesize of output 197 [2021-10-08 16:25:20,886 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:25:20,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 73 [2021-10-08 16:25:21,177 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:25:21,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 64 [2021-10-08 16:25:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:25:21,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544563580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:21,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:21,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 16:25:21,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632597068] [2021-10-08 16:25:21,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:25:21,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:25:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:25:21,254 INFO L87 Difference]: Start difference. First operand 6761 states and 28770 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:29,838 INFO L93 Difference]: Finished difference Result 10222 states and 41588 transitions. [2021-10-08 16:25:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:25:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:25:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:29,890 INFO L225 Difference]: With dead ends: 10222 [2021-10-08 16:25:29,890 INFO L226 Difference]: Without dead ends: 10222 [2021-10-08 16:25:29,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 6828.7ms TimeCoverageRelationStatistics Valid=890, Invalid=4080, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:25:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2021-10-08 16:25:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 6761. [2021-10-08 16:25:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6715 states have (on average 4.27728965003723) internal successors, (28722), 6760 states have internal predecessors, (28722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 28722 transitions. [2021-10-08 16:25:30,150 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 28722 transitions. Word has length 19 [2021-10-08 16:25:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:30,150 INFO L470 AbstractCegarLoop]: Abstraction has 6761 states and 28722 transitions. [2021-10-08 16:25:30,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 28722 transitions. [2021-10-08 16:25:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:25:30,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:30,154 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:30,195 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 [2021-10-08 16:25:30,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:30,368 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash 485377454, now seen corresponding path program 1 times [2021-10-08 16:25:30,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:30,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996532675] [2021-10-08 16:25:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:30,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:25:31,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996532675] [2021-10-08 16:25:31,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996532675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:31,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005390501] [2021-10-08 16:25:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:31,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:31,069 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) [2021-10-08 16:25:31,070 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 [2021-10-08 16:25:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:25:31,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:31,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:25:31,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:25:32,014 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:25:32,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:25:32,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:32,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:32,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:32,251 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:25:32,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:25:32,418 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:25:32,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:25:32,558 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:25:32,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:25:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:25:32,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005390501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:32,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:32,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-08 16:25:32,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609436144] [2021-10-08 16:25:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:25:32,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:25:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:25:32,602 INFO L87 Difference]: Start difference. First operand 6761 states and 28722 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:41,607 INFO L93 Difference]: Finished difference Result 23707 states and 94163 transitions. [2021-10-08 16:25:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 16:25:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:25:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:41,692 INFO L225 Difference]: With dead ends: 23707 [2021-10-08 16:25:41,692 INFO L226 Difference]: Without dead ends: 23707 [2021-10-08 16:25:41,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 6092.1ms TimeCoverageRelationStatistics Valid=1002, Invalid=6138, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:25:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2021-10-08 16:25:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 6761. [2021-10-08 16:25:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6715 states have (on average 4.270141474311243) internal successors, (28674), 6760 states have internal predecessors, (28674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 28674 transitions. [2021-10-08 16:25:42,006 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 28674 transitions. Word has length 19 [2021-10-08 16:25:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:42,006 INFO L470 AbstractCegarLoop]: Abstraction has 6761 states and 28674 transitions. [2021-10-08 16:25:42,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 28674 transitions. [2021-10-08 16:25:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:25:42,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:42,009 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:42,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-08 16:25:42,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:42,223 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:42,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1536856882, now seen corresponding path program 1 times [2021-10-08 16:25:42,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:42,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543608438] [2021-10-08 16:25:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:42,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:25:42,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:42,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543608438] [2021-10-08 16:25:42,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543608438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:42,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257177244] [2021-10-08 16:25:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:42,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:42,294 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) [2021-10-08 16:25:42,318 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 [2021-10-08 16:25:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:42,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:25:42,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 16:25:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257177244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:43,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:43,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 9 [2021-10-08 16:25:43,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879601433] [2021-10-08 16:25:43,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:25:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:25:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:25:43,008 INFO L87 Difference]: Start difference. First operand 6761 states and 28674 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 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) [2021-10-08 16:25:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:43,551 INFO L93 Difference]: Finished difference Result 8702 states and 35385 transitions. [2021-10-08 16:25:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:25:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 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 20 [2021-10-08 16:25:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:43,683 INFO L225 Difference]: With dead ends: 8702 [2021-10-08 16:25:43,683 INFO L226 Difference]: Without dead ends: 8702 [2021-10-08 16:25:43,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 176.7ms TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:25:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2021-10-08 16:25:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 6371. [2021-10-08 16:25:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6371 states, 6340 states have (on average 4.268296529968454) internal successors, (27061), 6370 states have internal predecessors, (27061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 27061 transitions. [2021-10-08 16:25:43,845 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 27061 transitions. Word has length 20 [2021-10-08 16:25:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:43,846 INFO L470 AbstractCegarLoop]: Abstraction has 6371 states and 27061 transitions. [2021-10-08 16:25:43,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 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) [2021-10-08 16:25:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 27061 transitions. [2021-10-08 16:25:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:25:43,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:43,847 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:43,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:25:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-08 16:25:44,048 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:44,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1536857078, now seen corresponding path program 1 times [2021-10-08 16:25:44,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:44,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860256086] [2021-10-08 16:25:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:44,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:25:44,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:44,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860256086] [2021-10-08 16:25:44,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860256086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:44,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:44,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:25:44,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660491202] [2021-10-08 16:25:44,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:44,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:44,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:44,097 INFO L87 Difference]: Start difference. First operand 6371 states and 27061 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2021-10-08 16:25:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:44,163 INFO L93 Difference]: Finished difference Result 5981 states and 25448 transitions. [2021-10-08 16:25:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:44,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 20 [2021-10-08 16:25:44,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:44,190 INFO L225 Difference]: With dead ends: 5981 [2021-10-08 16:25:44,190 INFO L226 Difference]: Without dead ends: 5981 [2021-10-08 16:25:44,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2021-10-08 16:25:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3641. [2021-10-08 16:25:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3625 states have (on average 4.135172413793104) internal successors, (14990), 3640 states have internal predecessors, (14990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 14990 transitions. [2021-10-08 16:25:44,355 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 14990 transitions. Word has length 20 [2021-10-08 16:25:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:44,355 INFO L470 AbstractCegarLoop]: Abstraction has 3641 states and 14990 transitions. [2021-10-08 16:25:44,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2021-10-08 16:25:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 14990 transitions. [2021-10-08 16:25:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:25:44,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:44,358 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:44,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-08 16:25:44,358 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:25:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:44,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2133191661, now seen corresponding path program 1 times [2021-10-08 16:25:44,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:44,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31146145] [2021-10-08 16:25:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:44,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:25:45,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:45,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31146145] [2021-10-08 16:25:45,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31146145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:45,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956227325] [2021-10-08 16:25:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:45,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:45,178 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) [2021-10-08 16:25:45,180 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 [2021-10-08 16:25:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:45,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:25:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:45,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:45,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:45,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:45,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:46,029 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:25:46,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 235 [2021-10-08 16:25:47,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:25:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:47,866 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:25:47,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-08 16:25:49,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:50,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:50,460 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:25:50,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 100 [2021-10-08 16:25:51,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:51,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:25:52,062 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:25:52,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-08 16:25:52,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:52,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:52,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:25:52,620 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:25:52,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 203 [2021-10-08 16:25:52,859 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:25:52,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:25:53,011 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:25:53,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:25:53,093 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:25:53,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:25:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:25:53,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956227325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:53,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:53,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 16:25:53,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86467049] [2021-10-08 16:25:53,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:25:53,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:25:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:25:53,139 INFO L87 Difference]: Start difference. First operand 3641 states and 14990 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:01,333 INFO L93 Difference]: Finished difference Result 18022 states and 72079 transitions. [2021-10-08 16:26:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:26:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:26:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:01,448 INFO L225 Difference]: With dead ends: 18022 [2021-10-08 16:26:01,449 INFO L226 Difference]: Without dead ends: 17968 [2021-10-08 16:26:01,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 4934.9ms TimeCoverageRelationStatistics Valid=466, Invalid=3566, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:26:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17968 states. [2021-10-08 16:26:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17968 to 6676. [2021-10-08 16:26:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6676 states, 6658 states have (on average 4.474767197356564) internal successors, (29793), 6675 states have internal predecessors, (29793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 29793 transitions. [2021-10-08 16:26:01,839 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 29793 transitions. Word has length 20 [2021-10-08 16:26:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:01,839 INFO L470 AbstractCegarLoop]: Abstraction has 6676 states and 29793 transitions. [2021-10-08 16:26:01,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 29793 transitions. [2021-10-08 16:26:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:26:01,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:01,842 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:26:01,874 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 [2021-10-08 16:26:02,042 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,SelfDestructingSolverStorable34 [2021-10-08 16:26:02,042 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:26:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2133191659, now seen corresponding path program 1 times [2021-10-08 16:26:02,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:02,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427807638] [2021-10-08 16:26:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:02,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:26:02,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:02,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427807638] [2021-10-08 16:26:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427807638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:02,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407919137] [2021-10-08 16:26:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:02,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:02,865 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) [2021-10-08 16:26:02,882 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 [2021-10-08 16:26:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:03,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:26:03,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:03,823 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:26:03,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:26:04,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:05,082 INFO L354 Elim1Store]: treesize reduction 276, result has 16.6 percent of original size [2021-10-08 16:26:05,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 108 [2021-10-08 16:26:07,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:26:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:08,129 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:26:08,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 80 treesize of output 146 [2021-10-08 16:26:08,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:08,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:08,560 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:26:08,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:26:08,815 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:26:08,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-10-08 16:26:08,988 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:26:08,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-10-08 16:26:09,072 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:26:09,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:26:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:26:09,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407919137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:09,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:26:09,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-08 16:26:09,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889937267] [2021-10-08 16:26:09,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:26:09,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:26:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:26:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:26:09,133 INFO L87 Difference]: Start difference. First operand 6676 states and 29793 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:22,183 INFO L93 Difference]: Finished difference Result 17614 states and 69867 transitions. [2021-10-08 16:26:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 16:26:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:26:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:22,255 INFO L225 Difference]: With dead ends: 17614 [2021-10-08 16:26:22,255 INFO L226 Difference]: Without dead ends: 17506 [2021-10-08 16:26:22,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 8640.2ms TimeCoverageRelationStatistics Valid=674, Invalid=5026, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:26:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2021-10-08 16:26:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 6682. [2021-10-08 16:26:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6664 states have (on average 4.338835534213685) internal successors, (28914), 6681 states have internal predecessors, (28914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 28914 transitions. [2021-10-08 16:26:22,601 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 28914 transitions. Word has length 20 [2021-10-08 16:26:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:22,601 INFO L470 AbstractCegarLoop]: Abstraction has 6682 states and 28914 transitions. [2021-10-08 16:26:22,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 28914 transitions. [2021-10-08 16:26:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:26:22,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:22,603 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:26:22,642 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 [2021-10-08 16:26:22,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:22,818 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:26:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2133191657, now seen corresponding path program 1 times [2021-10-08 16:26:22,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:22,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398015241] [2021-10-08 16:26:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:22,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:26:23,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:23,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398015241] [2021-10-08 16:26:23,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398015241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:23,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809062872] [2021-10-08 16:26:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:23,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:23,631 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) [2021-10-08 16:26:23,632 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 [2021-10-08 16:26:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:24,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:26:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:24,581 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-08 16:26:24,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:26:25,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:26:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:25,905 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:26:25,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:26:27,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:27,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:27,704 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:26:27,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 90 [2021-10-08 16:26:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:29,086 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:26:29,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:26:29,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:29,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:29,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:26:29,613 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:26:29,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:26:29,977 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:26:29,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 81 [2021-10-08 16:26:30,379 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:26:30,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 73 [2021-10-08 16:26:30,570 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:26:30,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 64 [2021-10-08 16:26:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:26:30,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809062872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:30,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:26:30,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-08 16:26:30,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675734148] [2021-10-08 16:26:30,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:26:30,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:26:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:26:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:26:30,659 INFO L87 Difference]: Start difference. First operand 6682 states and 28914 transitions. Second operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:26:40,924 INFO L93 Difference]: Finished difference Result 18916 states and 73445 transitions. [2021-10-08 16:26:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:26:40,925 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:26:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:26:40,985 INFO L225 Difference]: With dead ends: 18916 [2021-10-08 16:26:40,986 INFO L226 Difference]: Without dead ends: 18916 [2021-10-08 16:26:40,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 6825.7ms TimeCoverageRelationStatistics Valid=496, Invalid=3926, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:26:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18916 states. [2021-10-08 16:26:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18916 to 6682. [2021-10-08 16:26:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6664 states have (on average 4.205582232893157) internal successors, (28026), 6681 states have internal predecessors, (28026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 28026 transitions. [2021-10-08 16:26:41,230 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 28026 transitions. Word has length 20 [2021-10-08 16:26:41,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:26:41,230 INFO L470 AbstractCegarLoop]: Abstraction has 6682 states and 28026 transitions. [2021-10-08 16:26:41,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:26:41,230 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 28026 transitions. [2021-10-08 16:26:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:26:41,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:26:41,232 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:26:41,259 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 [2021-10-08 16:26:41,432 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,SelfDestructingSolverStorable36 [2021-10-08 16:26:41,433 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:26:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:26:41,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2133191654, now seen corresponding path program 1 times [2021-10-08 16:26:41,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:26:41,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032269742] [2021-10-08 16:26:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:41,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:26:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:26:42,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:26:42,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032269742] [2021-10-08 16:26:42,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032269742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:42,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277036118] [2021-10-08 16:26:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:26:42,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:26:42,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:26:42,227 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) [2021-10-08 16:26:42,228 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 [2021-10-08 16:26:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:26:43,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:26:43,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:26:43,341 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:26:43,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:26:44,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:44,536 INFO L354 Elim1Store]: treesize reduction 276, result has 16.6 percent of original size [2021-10-08 16:26:44,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 108 [2021-10-08 16:26:46,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:26:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:26:47,514 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:26:47,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 80 treesize of output 146 [2021-10-08 16:26:47,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:26:47,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:26:47,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:26:47,989 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:26:47,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 213 treesize of output 202 [2021-10-08 16:26:48,258 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:26:48,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:26:48,420 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:26:48,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-08 16:26:48,505 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:26:48,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:26:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:26:48,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277036118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:26:48,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:26:48,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-08 16:26:48,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691250574] [2021-10-08 16:26:48,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:26:48,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:26:48,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:26:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:26:48,568 INFO L87 Difference]: Start difference. First operand 6682 states and 28026 transitions. Second operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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) [2021-10-08 16:27:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:01,487 INFO L93 Difference]: Finished difference Result 16322 states and 63275 transitions. [2021-10-08 16:27:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 16:27:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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 20 [2021-10-08 16:27:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:01,538 INFO L225 Difference]: With dead ends: 16322 [2021-10-08 16:27:01,538 INFO L226 Difference]: Without dead ends: 16322 [2021-10-08 16:27:01,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 8905.2ms TimeCoverageRelationStatistics Valid=733, Invalid=5273, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:27:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16322 states. [2021-10-08 16:27:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16322 to 6682. [2021-10-08 16:27:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6664 states have (on average 4.072328931572629) internal successors, (27138), 6681 states have internal predecessors, (27138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 27138 transitions. [2021-10-08 16:27:01,763 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 27138 transitions. Word has length 20 [2021-10-08 16:27:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:01,764 INFO L470 AbstractCegarLoop]: Abstraction has 6682 states and 27138 transitions. [2021-10-08 16:27:01,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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) [2021-10-08 16:27:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 27138 transitions. [2021-10-08 16:27:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:27:01,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:01,767 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:01,793 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 [2021-10-08 16:27:01,967 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,SelfDestructingSolverStorable37 [2021-10-08 16:27:01,967 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:01,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1703440569, now seen corresponding path program 3 times [2021-10-08 16:27:01,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:01,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214687794] [2021-10-08 16:27:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:01,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:27:02,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:02,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214687794] [2021-10-08 16:27:02,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214687794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:02,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812398650] [2021-10-08 16:27:02,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:27:02,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:02,077 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) [2021-10-08 16:27:02,102 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 [2021-10-08 16:27:03,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:27:03,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:27:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 16:27:03,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812398650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:03,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:03,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:27:03,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545246470] [2021-10-08 16:27:03,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:27:03,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:27:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:27:03,323 INFO L87 Difference]: Start difference. First operand 6682 states and 27138 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:03,948 INFO L93 Difference]: Finished difference Result 10815 states and 42950 transitions. [2021-10-08 16:27:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:27:03,948 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:27:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:04,082 INFO L225 Difference]: With dead ends: 10815 [2021-10-08 16:27:04,082 INFO L226 Difference]: Without dead ends: 10815 [2021-10-08 16:27:04,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 326.3ms TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:27:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10815 states. [2021-10-08 16:27:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10815 to 6288. [2021-10-08 16:27:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6288 states, 6270 states have (on average 4.132854864433812) internal successors, (25913), 6287 states have internal predecessors, (25913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 25913 transitions. [2021-10-08 16:27:04,241 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 25913 transitions. Word has length 21 [2021-10-08 16:27:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:04,242 INFO L470 AbstractCegarLoop]: Abstraction has 6288 states and 25913 transitions. [2021-10-08 16:27:04,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 25913 transitions. [2021-10-08 16:27:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:27:04,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:04,245 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:04,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:27:04,456 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,SelfDestructingSolverStorable38 [2021-10-08 16:27:04,456 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash 4573807, now seen corresponding path program 1 times [2021-10-08 16:27:04,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:04,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576256806] [2021-10-08 16:27:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:04,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:27:04,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:04,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576256806] [2021-10-08 16:27:04,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576256806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:04,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651826681] [2021-10-08 16:27:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:04,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:04,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:04,578 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) [2021-10-08 16:27:04,581 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 [2021-10-08 16:27:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:27:05,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:27:05,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651826681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:05,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:05,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 13 [2021-10-08 16:27:05,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576765311] [2021-10-08 16:27:05,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:27:05,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:27:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:27:05,670 INFO L87 Difference]: Start difference. First operand 6288 states and 25913 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2021-10-08 16:27:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:06,296 INFO L93 Difference]: Finished difference Result 6796 states and 26837 transitions. [2021-10-08 16:27:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:27:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 22 [2021-10-08 16:27:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:06,314 INFO L225 Difference]: With dead ends: 6796 [2021-10-08 16:27:06,315 INFO L226 Difference]: Without dead ends: 6402 [2021-10-08 16:27:06,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 209.8ms TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:27:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-10-08 16:27:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 5330. [2021-10-08 16:27:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5319 states have (on average 4.159804474525287) internal successors, (22126), 5329 states have internal predecessors, (22126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 22126 transitions. [2021-10-08 16:27:06,425 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 22126 transitions. Word has length 22 [2021-10-08 16:27:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:06,425 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 22126 transitions. [2021-10-08 16:27:06,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) [2021-10-08 16:27:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 22126 transitions. [2021-10-08 16:27:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:27:06,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:06,429 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:06,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:27:06,642 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,SelfDestructingSolverStorable39 [2021-10-08 16:27:06,643 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash -970072265, now seen corresponding path program 4 times [2021-10-08 16:27:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:06,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516179601] [2021-10-08 16:27:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:06,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-08 16:27:07,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:07,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516179601] [2021-10-08 16:27:07,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516179601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:07,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015288977] [2021-10-08 16:27:07,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:27:07,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:07,156 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) [2021-10-08 16:27:07,158 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 [2021-10-08 16:27:08,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:27:08,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:08,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:27:08,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:08,384 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-08 16:27:08,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 187 [2021-10-08 16:27:11,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:27:11,259 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:27:11,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 78 treesize of output 124 [2021-10-08 16:27:13,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:14,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:15,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:15,328 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:27:15,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 109 [2021-10-08 16:27:18,297 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:27:18,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 104 treesize of output 170 [2021-10-08 16:27:18,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:18,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:18,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:18,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:18,640 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:27:18,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 198 [2021-10-08 16:27:18,800 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:27:18,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:27:18,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:18,972 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-08 16:27:18,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:27:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-08 16:27:19,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015288977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:19,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:19,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 16:27:19,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107994691] [2021-10-08 16:27:19,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:27:19,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:27:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:27:19,023 INFO L87 Difference]: Start difference. First operand 5330 states and 22126 transitions. Second operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 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) [2021-10-08 16:27:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:24,677 INFO L93 Difference]: Finished difference Result 7649 states and 30527 transitions. [2021-10-08 16:27:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:27:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 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 23 [2021-10-08 16:27:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:24,699 INFO L225 Difference]: With dead ends: 7649 [2021-10-08 16:27:24,699 INFO L226 Difference]: Without dead ends: 7649 [2021-10-08 16:27:24,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3300.0ms TimeCoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:27:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2021-10-08 16:27:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 5338. [2021-10-08 16:27:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5327 states have (on average 4.164257555847569) internal successors, (22183), 5337 states have internal predecessors, (22183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 22183 transitions. [2021-10-08 16:27:24,819 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 22183 transitions. Word has length 23 [2021-10-08 16:27:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:24,819 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 22183 transitions. [2021-10-08 16:27:24,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 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) [2021-10-08 16:27:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 22183 transitions. [2021-10-08 16:27:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:27:24,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:24,822 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:24,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:27:25,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:25,023 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash -970072263, now seen corresponding path program 2 times [2021-10-08 16:27:25,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:25,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462850144] [2021-10-08 16:27:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:25,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:27:25,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:25,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462850144] [2021-10-08 16:27:25,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462850144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:25,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534713241] [2021-10-08 16:27:25,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:27:25,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:25,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:25,737 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) [2021-10-08 16:27:25,738 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 [2021-10-08 16:27:26,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:27:26,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:26,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:27:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:26,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:27:27,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:27:27,119 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:27:27,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:27:27,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:27,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:27,370 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:27:27,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:27:27,552 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:27:27,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:27:27,681 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:27:27,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:27:27,762 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:27:27,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:27:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:27:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534713241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:27,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:27,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 29 [2021-10-08 16:27:27,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821896295] [2021-10-08 16:27:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:27:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:27:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:27:27,901 INFO L87 Difference]: Start difference. First operand 5338 states and 22183 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-08 16:27:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:32,109 INFO L93 Difference]: Finished difference Result 6095 states and 24027 transitions. [2021-10-08 16:27:32,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:27:32,110 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 23 [2021-10-08 16:27:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:32,126 INFO L225 Difference]: With dead ends: 6095 [2021-10-08 16:27:32,126 INFO L226 Difference]: Without dead ends: 6095 [2021-10-08 16:27:32,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2533.8ms TimeCoverageRelationStatistics Valid=325, Invalid=2225, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:27:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2021-10-08 16:27:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 4526. [2021-10-08 16:27:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4515 states have (on average 4.044296788482835) internal successors, (18260), 4525 states have internal predecessors, (18260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 18260 transitions. [2021-10-08 16:27:32,221 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 18260 transitions. Word has length 23 [2021-10-08 16:27:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:32,221 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 18260 transitions. [2021-10-08 16:27:32,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-08 16:27:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 18260 transitions. [2021-10-08 16:27:32,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:27:32,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:32,224 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:32,251 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 [2021-10-08 16:27:32,424 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,SelfDestructingSolverStorable41 [2021-10-08 16:27:32,425 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash -970072261, now seen corresponding path program 2 times [2021-10-08 16:27:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:32,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743977020] [2021-10-08 16:27:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:32,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:27:32,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:32,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743977020] [2021-10-08 16:27:32,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743977020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:32,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473550163] [2021-10-08 16:27:32,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:27:32,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:32,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:32,913 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) [2021-10-08 16:27:32,935 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 [2021-10-08 16:27:34,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:27:34,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:34,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:27:34,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:34,178 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:27:34,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:27:35,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:27:35,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:36,066 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:27:36,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:27:37,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:38,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:38,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:39,299 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:27:39,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 95 [2021-10-08 16:27:40,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:41,055 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:27:41,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:27:41,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:41,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:41,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:41,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:27:41,574 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:27:41,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 208 treesize of output 197 [2021-10-08 16:27:41,934 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:27:41,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 73 [2021-10-08 16:27:42,249 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:27:42,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 64 [2021-10-08 16:27:42,434 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-10-08 16:27:42,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 81 [2021-10-08 16:27:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-08 16:27:42,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473550163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:42,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:42,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-08 16:27:42,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974385569] [2021-10-08 16:27:42,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:27:42,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:27:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:27:42,544 INFO L87 Difference]: Start difference. First operand 4526 states and 18260 transitions. Second operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:46,512 INFO L93 Difference]: Finished difference Result 4542 states and 18286 transitions. [2021-10-08 16:27:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:27:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:27:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:46,536 INFO L225 Difference]: With dead ends: 4542 [2021-10-08 16:27:46,537 INFO L226 Difference]: Without dead ends: 4542 [2021-10-08 16:27:46,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3296.2ms TimeCoverageRelationStatistics Valid=239, Invalid=1923, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:27:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2021-10-08 16:27:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4526. [2021-10-08 16:27:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4515 states have (on average 4.042524916943521) internal successors, (18252), 4525 states have internal predecessors, (18252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 18252 transitions. [2021-10-08 16:27:46,652 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 18252 transitions. Word has length 23 [2021-10-08 16:27:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:46,652 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 18252 transitions. [2021-10-08 16:27:46,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 18252 transitions. [2021-10-08 16:27:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:27:46,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:46,655 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:46,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:27:46,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:46,856 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:46,857 INFO L82 PathProgramCache]: Analyzing trace with hash -970072258, now seen corresponding path program 2 times [2021-10-08 16:27:46,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:46,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169402556] [2021-10-08 16:27:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:46,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:27:47,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:47,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169402556] [2021-10-08 16:27:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169402556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:47,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691379694] [2021-10-08 16:27:47,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:27:47,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:47,668 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) [2021-10-08 16:27:47,669 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 [2021-10-08 16:27:48,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:27:48,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:48,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:27:48,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:48,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:27:49,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:27:49,219 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:27:49,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:27:49,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:49,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:49,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:49,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:49,474 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:27:49,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:27:49,646 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:27:49,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:27:49,773 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:27:49,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:27:49,856 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:27:49,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:27:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:27:49,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691379694] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:49,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:27:49,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 29 [2021-10-08 16:27:49,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92790310] [2021-10-08 16:27:49,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:27:49,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:27:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:27:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:27:49,912 INFO L87 Difference]: Start difference. First operand 4526 states and 18252 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-08 16:27:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:27:54,288 INFO L93 Difference]: Finished difference Result 6079 states and 23977 transitions. [2021-10-08 16:27:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:27:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 23 [2021-10-08 16:27:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:27:54,304 INFO L225 Difference]: With dead ends: 6079 [2021-10-08 16:27:54,305 INFO L226 Difference]: Without dead ends: 6079 [2021-10-08 16:27:54,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2593.9ms TimeCoverageRelationStatistics Valid=325, Invalid=2225, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:27:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2021-10-08 16:27:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 4526. [2021-10-08 16:27:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4515 states have (on average 4.040753045404208) internal successors, (18244), 4525 states have internal predecessors, (18244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:27:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 18244 transitions. [2021-10-08 16:27:54,400 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 18244 transitions. Word has length 23 [2021-10-08 16:27:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:27:54,400 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 18244 transitions. [2021-10-08 16:27:54,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-08 16:27:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 18244 transitions. [2021-10-08 16:27:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:27:54,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:27:54,404 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:27:54,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-08 16:27:54,604 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,SelfDestructingSolverStorable43 [2021-10-08 16:27:54,604 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:27:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:27:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -8443867, now seen corresponding path program 2 times [2021-10-08 16:27:54,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:27:54,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480414205] [2021-10-08 16:27:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:27:54,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:27:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:27:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:27:55,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:27:55,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480414205] [2021-10-08 16:27:55,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480414205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:27:55,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864330735] [2021-10-08 16:27:55,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:27:55,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:27:55,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:27:55,148 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) [2021-10-08 16:27:55,171 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 [2021-10-08 16:27:56,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:27:56,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:27:56,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:27:56,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:27:56,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:56,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:56,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:56,477 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-08 16:27:56,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:27:57,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:27:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:57,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:27:58,141 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:27:58,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:27:59,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:27:59,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:00,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:00,359 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:28:00,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 92 [2021-10-08 16:28:02,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:02,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:02,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:02,228 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:28:02,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:28:02,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:02,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:02,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:02,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:02,774 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:28:02,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 203 [2021-10-08 16:28:02,978 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:28:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:28:03,140 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:28:03,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:28:03,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:03,269 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:28:03,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:28:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-08 16:28:03,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864330735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:03,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:03,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-08 16:28:03,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66243845] [2021-10-08 16:28:03,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:28:03,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:28:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:28:03,327 INFO L87 Difference]: Start difference. First operand 4526 states and 18244 transitions. Second operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-08 16:28:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:07,138 INFO L93 Difference]: Finished difference Result 6890 states and 26775 transitions. [2021-10-08 16:28:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:28:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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 24 [2021-10-08 16:28:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:07,157 INFO L225 Difference]: With dead ends: 6890 [2021-10-08 16:28:07,157 INFO L226 Difference]: Without dead ends: 6890 [2021-10-08 16:28:07,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2957.0ms TimeCoverageRelationStatistics Valid=205, Invalid=1687, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:28:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2021-10-08 16:28:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 4804. [2021-10-08 16:28:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4793 states have (on average 4.2739411641977885) internal successors, (20485), 4803 states have internal predecessors, (20485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 20485 transitions. [2021-10-08 16:28:07,261 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 20485 transitions. Word has length 24 [2021-10-08 16:28:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:07,261 INFO L470 AbstractCegarLoop]: Abstraction has 4804 states and 20485 transitions. [2021-10-08 16:28:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-08 16:28:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 20485 transitions. [2021-10-08 16:28:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:28:07,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:07,264 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:07,292 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 [2021-10-08 16:28:07,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:07,465 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -8443865, now seen corresponding path program 2 times [2021-10-08 16:28:07,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:07,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941119259] [2021-10-08 16:28:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:07,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 16:28:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:08,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941119259] [2021-10-08 16:28:08,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941119259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:08,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139690760] [2021-10-08 16:28:08,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:28:08,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:28:08,242 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) [2021-10-08 16:28:08,243 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 [2021-10-08 16:28:09,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:28:09,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:28:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:28:09,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:28:09,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:28:09,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:28:09,924 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:28:09,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:28:09,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:10,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:10,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:10,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:10,198 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:28:10,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:28:10,395 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:28:10,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:28:10,634 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:28:10,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:28:10,698 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:28:10,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:28:10,781 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:28:10,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:28:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:10,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139690760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:10,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:10,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2021-10-08 16:28:10,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539908510] [2021-10-08 16:28:10,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:28:10,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:28:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:28:10,839 INFO L87 Difference]: Start difference. First operand 4804 states and 20485 transitions. Second operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2021-10-08 16:28:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:15,894 INFO L93 Difference]: Finished difference Result 8336 states and 31976 transitions. [2021-10-08 16:28:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:28:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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 24 [2021-10-08 16:28:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:15,927 INFO L225 Difference]: With dead ends: 8336 [2021-10-08 16:28:15,927 INFO L226 Difference]: Without dead ends: 8264 [2021-10-08 16:28:15,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3077.3ms TimeCoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:28:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2021-10-08 16:28:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 5844. [2021-10-08 16:28:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5832 states have (on average 3.9830246913580245) internal successors, (23229), 5843 states have internal predecessors, (23229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 23229 transitions. [2021-10-08 16:28:16,060 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 23229 transitions. Word has length 24 [2021-10-08 16:28:16,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:16,060 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 23229 transitions. [2021-10-08 16:28:16,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2021-10-08 16:28:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 23229 transitions. [2021-10-08 16:28:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:28:16,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:16,063 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:16,093 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 [2021-10-08 16:28:16,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:16,264 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:16,265 INFO L82 PathProgramCache]: Analyzing trace with hash -8443863, now seen corresponding path program 2 times [2021-10-08 16:28:16,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:16,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621878686] [2021-10-08 16:28:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:16,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:16,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:16,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621878686] [2021-10-08 16:28:16,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621878686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:16,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865023723] [2021-10-08 16:28:16,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:28:16,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:28:16,854 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) [2021-10-08 16:28:16,855 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 [2021-10-08 16:28:18,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:28:18,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:28:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:28:18,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:28:18,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:18,331 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-08 16:28:18,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:28:19,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:28:19,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:19,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:20,068 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:28:20,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:28:21,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:21,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:22,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:22,247 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:28:22,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 90 [2021-10-08 16:28:23,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:23,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:23,742 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:28:23,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:28:24,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:24,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:24,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:24,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:28:24,376 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:28:24,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 215 [2021-10-08 16:28:24,732 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:28:24,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 60 [2021-10-08 16:28:25,008 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:28:25,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 60 [2021-10-08 16:28:25,155 INFO L354 Elim1Store]: treesize reduction 35, result has 37.5 percent of original size [2021-10-08 16:28:25,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 62 [2021-10-08 16:28:25,315 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:28:25,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 68 [2021-10-08 16:28:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-08 16:28:25,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865023723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:25,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:25,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-08 16:28:25,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283093912] [2021-10-08 16:28:25,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:28:25,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:28:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=749, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:28:25,414 INFO L87 Difference]: Start difference. First operand 5844 states and 23229 transitions. Second operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-08 16:28:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:29,579 INFO L93 Difference]: Finished difference Result 6441 states and 24749 transitions. [2021-10-08 16:28:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:28:29,580 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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 24 [2021-10-08 16:28:29,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:29,597 INFO L225 Difference]: With dead ends: 6441 [2021-10-08 16:28:29,597 INFO L226 Difference]: Without dead ends: 6441 [2021-10-08 16:28:29,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3218.4ms TimeCoverageRelationStatistics Valid=202, Invalid=1690, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:28:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states. [2021-10-08 16:28:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 5844. [2021-10-08 16:28:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5832 states have (on average 3.9353566529492454) internal successors, (22951), 5843 states have internal predecessors, (22951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 22951 transitions. [2021-10-08 16:28:29,731 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 22951 transitions. Word has length 24 [2021-10-08 16:28:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:29,731 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 22951 transitions. [2021-10-08 16:28:29,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-08 16:28:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 22951 transitions. [2021-10-08 16:28:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:28:29,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:29,734 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:29,762 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 [2021-10-08 16:28:29,934 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,SelfDestructingSolverStorable46 [2021-10-08 16:28:29,935 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:29,937 INFO L82 PathProgramCache]: Analyzing trace with hash -8443860, now seen corresponding path program 2 times [2021-10-08 16:28:29,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:29,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805902649] [2021-10-08 16:28:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:29,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:28:30,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:30,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805902649] [2021-10-08 16:28:30,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805902649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:30,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381272440] [2021-10-08 16:28:30,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:28:30,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:28:30,848 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) [2021-10-08 16:28:30,849 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 [2021-10-08 16:28:32,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:28:32,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:28:32,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:28:32,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:28:32,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:28:32,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:28:32,646 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:28:32,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:28:32,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:32,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:32,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:32,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:32,942 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:28:32,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:28:33,119 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:28:33,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:28:33,292 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:28:33,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:28:33,360 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:28:33,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:28:33,446 INFO L354 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2021-10-08 16:28:33,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-10-08 16:28:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:33,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381272440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:33,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:33,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 31 [2021-10-08 16:28:33,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479173900] [2021-10-08 16:28:33,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:28:33,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:28:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:28:33,507 INFO L87 Difference]: Start difference. First operand 5844 states and 22951 transitions. Second operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2021-10-08 16:28:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:38,876 INFO L93 Difference]: Finished difference Result 7708 states and 29336 transitions. [2021-10-08 16:28:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:28:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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 24 [2021-10-08 16:28:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:38,897 INFO L225 Difference]: With dead ends: 7708 [2021-10-08 16:28:38,897 INFO L226 Difference]: Without dead ends: 7708 [2021-10-08 16:28:38,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3244.0ms TimeCoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:28:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7708 states. [2021-10-08 16:28:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7708 to 5844. [2021-10-08 16:28:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5832 states have (on average 3.8876886145404663) internal successors, (22673), 5843 states have internal predecessors, (22673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 22673 transitions. [2021-10-08 16:28:39,016 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 22673 transitions. Word has length 24 [2021-10-08 16:28:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:39,016 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 22673 transitions. [2021-10-08 16:28:39,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2021-10-08 16:28:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 22673 transitions. [2021-10-08 16:28:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:28:39,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:39,019 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:39,048 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 [2021-10-08 16:28:39,220 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,SelfDestructingSolverStorable47 [2021-10-08 16:28:39,220 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash -7460764, now seen corresponding path program 5 times [2021-10-08 16:28:39,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:39,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405239604] [2021-10-08 16:28:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:39,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:39,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405239604] [2021-10-08 16:28:39,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405239604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072179453] [2021-10-08 16:28:39,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:28:39,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:39,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:28:39,342 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) [2021-10-08 16:28:39,346 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 [2021-10-08 16:28:41,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:28:41,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:28:41,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:28:41,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:28:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:41,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072179453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:41,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:41,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 16:28:41,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99291256] [2021-10-08 16:28:41,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:28:41,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:28:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:28:41,351 INFO L87 Difference]: Start difference. First operand 5844 states and 22673 transitions. Second operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 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) [2021-10-08 16:28:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:42,203 INFO L93 Difference]: Finished difference Result 9646 states and 36533 transitions. [2021-10-08 16:28:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:28:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 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 24 [2021-10-08 16:28:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:42,229 INFO L225 Difference]: With dead ends: 9646 [2021-10-08 16:28:42,230 INFO L226 Difference]: Without dead ends: 9646 [2021-10-08 16:28:42,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 410.4ms TimeCoverageRelationStatistics Valid=389, Invalid=1251, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:28:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9646 states. [2021-10-08 16:28:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9646 to 6446. [2021-10-08 16:28:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6446 states, 6434 states have (on average 3.890892135529997) internal successors, (25034), 6445 states have internal predecessors, (25034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 25034 transitions. [2021-10-08 16:28:42,372 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 25034 transitions. Word has length 24 [2021-10-08 16:28:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:42,372 INFO L470 AbstractCegarLoop]: Abstraction has 6446 states and 25034 transitions. [2021-10-08 16:28:42,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 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) [2021-10-08 16:28:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 25034 transitions. [2021-10-08 16:28:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:28:42,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:42,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:42,405 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 [2021-10-08 16:28:42,576 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,SelfDestructingSolverStorable48 [2021-10-08 16:28:42,576 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2105848595, now seen corresponding path program 1 times [2021-10-08 16:28:42,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:42,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372151005] [2021-10-08 16:28:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:42,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:28:42,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:42,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372151005] [2021-10-08 16:28:42,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372151005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:28:42,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:28:42,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:28:42,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901586133] [2021-10-08 16:28:42,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:28:42,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:28:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:28:42,625 INFO L87 Difference]: Start difference. First operand 6446 states and 25034 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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) [2021-10-08 16:28:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:42,721 INFO L93 Difference]: Finished difference Result 10643 states and 41644 transitions. [2021-10-08 16:28:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:28:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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 25 [2021-10-08 16:28:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:42,767 INFO L225 Difference]: With dead ends: 10643 [2021-10-08 16:28:42,768 INFO L226 Difference]: Without dead ends: 10643 [2021-10-08 16:28:42,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:28:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10643 states. [2021-10-08 16:28:43,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10643 to 7731. [2021-10-08 16:28:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7731 states, 7719 states have (on average 3.9821220365332297) internal successors, (30738), 7730 states have internal predecessors, (30738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 30738 transitions. [2021-10-08 16:28:43,182 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 30738 transitions. Word has length 25 [2021-10-08 16:28:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 7731 states and 30738 transitions. [2021-10-08 16:28:43,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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) [2021-10-08 16:28:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 30738 transitions. [2021-10-08 16:28:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:28:43,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:43,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-08 16:28:43,187 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2105848499, now seen corresponding path program 1 times [2021-10-08 16:28:43,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:43,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397432535] [2021-10-08 16:28:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:43,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:28:43,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:43,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397432535] [2021-10-08 16:28:43,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397432535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:28:43,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:28:43,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:28:43,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490651979] [2021-10-08 16:28:43,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:28:43,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:28:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:28:43,241 INFO L87 Difference]: Start difference. First operand 7731 states and 30738 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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) [2021-10-08 16:28:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:28:43,343 INFO L93 Difference]: Finished difference Result 10643 states and 41643 transitions. [2021-10-08 16:28:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:28:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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 25 [2021-10-08 16:28:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:28:43,396 INFO L225 Difference]: With dead ends: 10643 [2021-10-08 16:28:43,396 INFO L226 Difference]: Without dead ends: 10399 [2021-10-08 16:28:43,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:28:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10399 states. [2021-10-08 16:28:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10399 to 7487. [2021-10-08 16:28:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7487 states, 7475 states have (on average 4.003745819397993) internal successors, (29928), 7486 states have internal predecessors, (29928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:28:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7487 states to 7487 states and 29928 transitions. [2021-10-08 16:28:43,654 INFO L78 Accepts]: Start accepts. Automaton has 7487 states and 29928 transitions. Word has length 25 [2021-10-08 16:28:43,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:28:43,655 INFO L470 AbstractCegarLoop]: Abstraction has 7487 states and 29928 transitions. [2021-10-08 16:28:43,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 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) [2021-10-08 16:28:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7487 states and 29928 transitions. [2021-10-08 16:28:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:28:43,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:28:43,661 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:28:43,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-08 16:28:43,661 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:28:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:28:43,661 INFO L82 PathProgramCache]: Analyzing trace with hash 362422183, now seen corresponding path program 6 times [2021-10-08 16:28:43,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:28:43,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513408162] [2021-10-08 16:28:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:28:43,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:28:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:28:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:28:44,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:28:44,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513408162] [2021-10-08 16:28:44,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513408162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:44,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931768190] [2021-10-08 16:28:44,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:28:44,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:28:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:28:44,731 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) [2021-10-08 16:28:44,731 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 [2021-10-08 16:28:47,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:28:47,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:28:47,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-08 16:28:47,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:28:47,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:47,352 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:28:47,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:28:49,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:28:49,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:49,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:49,864 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:28:49,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:28:51,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:51,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:52,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:53,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:54,095 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:28:54,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-10-08 16:28:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:28:56,926 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:28:56,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:28:57,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:57,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:57,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:57,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:57,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:28:57,427 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:28:57,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 199 [2021-10-08 16:28:57,605 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:28:57,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:28:57,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:28:57,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:28:57,902 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:28:57,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:28:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:28:57,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931768190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:28:57,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:28:57,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 31 [2021-10-08 16:28:57,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817335671] [2021-10-08 16:28:57,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:28:57,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:28:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:28:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:28:57,967 INFO L87 Difference]: Start difference. First operand 7487 states and 29928 transitions. Second operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-08 16:29:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:29:04,850 INFO L93 Difference]: Finished difference Result 9920 states and 39186 transitions. [2021-10-08 16:29:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:29:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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 27 [2021-10-08 16:29:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:29:04,878 INFO L225 Difference]: With dead ends: 9920 [2021-10-08 16:29:04,878 INFO L226 Difference]: Without dead ends: 9920 [2021-10-08 16:29:04,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 5004.7ms TimeCoverageRelationStatistics Valid=425, Invalid=3357, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:29:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2021-10-08 16:29:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7497. [2021-10-08 16:29:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7497 states, 7485 states have (on average 4.008016032064128) internal successors, (30000), 7496 states have internal predecessors, (30000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:29:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 30000 transitions. [2021-10-08 16:29:05,042 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 30000 transitions. Word has length 27 [2021-10-08 16:29:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:29:05,043 INFO L470 AbstractCegarLoop]: Abstraction has 7497 states and 30000 transitions. [2021-10-08 16:29:05,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-08 16:29:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 30000 transitions. [2021-10-08 16:29:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:29:05,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:29:05,048 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:29:05,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-08 16:29:05,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:05,249 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:29:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:29:05,250 INFO L82 PathProgramCache]: Analyzing trace with hash 362422185, now seen corresponding path program 3 times [2021-10-08 16:29:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:29:05,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346958308] [2021-10-08 16:29:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:29:05,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:29:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:29:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:29:06,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:29:06,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346958308] [2021-10-08 16:29:06,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346958308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:06,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485895374] [2021-10-08 16:29:06,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:29:06,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:29:06,116 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) [2021-10-08 16:29:06,120 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 [2021-10-08 16:29:08,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:29:08,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:29:08,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:29:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:29:08,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:29:08,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:29:08,678 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:29:08,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:29:08,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:29:08,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:29:08,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:29:08,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:29:08,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:29:09,043 INFO L354 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2021-10-08 16:29:09,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 199 [2021-10-08 16:29:09,368 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:29:09,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-10-08 16:29:09,569 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:29:09,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:29:09,673 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:29:09,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:29:09,795 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-08 16:29:09,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2021-10-08 16:29:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:29:09,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485895374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:09,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:29:09,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 34 [2021-10-08 16:29:09,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942842496] [2021-10-08 16:29:09,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:29:09,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:29:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:29:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:29:09,880 INFO L87 Difference]: Start difference. First operand 7497 states and 30000 transitions. Second operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2021-10-08 16:29:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:29:23,657 INFO L93 Difference]: Finished difference Result 17347 states and 68115 transitions. [2021-10-08 16:29:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-08 16:29:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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 27 [2021-10-08 16:29:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:29:23,709 INFO L225 Difference]: With dead ends: 17347 [2021-10-08 16:29:23,709 INFO L226 Difference]: Without dead ends: 17347 [2021-10-08 16:29:23,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 9756.5ms TimeCoverageRelationStatistics Valid=1462, Invalid=12344, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:29:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17347 states. [2021-10-08 16:29:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17347 to 7673. [2021-10-08 16:29:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7673 states, 7661 states have (on average 3.9904712178566766) internal successors, (30571), 7672 states have internal predecessors, (30571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:29:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 30571 transitions. [2021-10-08 16:29:23,999 INFO L78 Accepts]: Start accepts. Automaton has 7673 states and 30571 transitions. Word has length 27 [2021-10-08 16:29:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:29:24,000 INFO L470 AbstractCegarLoop]: Abstraction has 7673 states and 30571 transitions. [2021-10-08 16:29:24,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2021-10-08 16:29:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7673 states and 30571 transitions. [2021-10-08 16:29:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:29:24,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:29:24,005 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:29:24,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:29:24,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:24,206 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:29:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:29:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash 362422187, now seen corresponding path program 3 times [2021-10-08 16:29:24,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:29:24,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153301230] [2021-10-08 16:29:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:29:24,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:29:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:29:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 16:29:24,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:29:24,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153301230] [2021-10-08 16:29:24,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153301230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:24,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485794083] [2021-10-08 16:29:24,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:29:24,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:29:24,953 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) [2021-10-08 16:29:24,970 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 [2021-10-08 16:29:26,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:29:26,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:29:26,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:29:26,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:29:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:27,037 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:29:27,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:29:29,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:29:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:29,508 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:29:29,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:29:30,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:31,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:32,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:33,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:34,661 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:29:34,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 95 [2021-10-08 16:29:36,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:29:36,157 INFO L354 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2021-10-08 16:29:36,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:29:36,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:36,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:36,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:36,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:36,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:29:36,781 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:29:36,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 208 treesize of output 197 [2021-10-08 16:29:37,118 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:29:37,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 73 [2021-10-08 16:29:37,445 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-10-08 16:29:37,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 71 [2021-10-08 16:29:37,635 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-10-08 16:29:37,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 88 [2021-10-08 16:29:37,870 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:29:37,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 87 [2021-10-08 16:29:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:29:37,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485794083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:37,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:29:37,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 31 [2021-10-08 16:29:37,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945508617] [2021-10-08 16:29:37,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:29:37,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:29:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:29:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=975, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:29:37,970 INFO L87 Difference]: Start difference. First operand 7673 states and 30571 transitions. Second operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-08 16:29:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:29:42,533 INFO L93 Difference]: Finished difference Result 7709 states and 30619 transitions. [2021-10-08 16:29:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:29:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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 27 [2021-10-08 16:29:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:29:42,555 INFO L225 Difference]: With dead ends: 7709 [2021-10-08 16:29:42,555 INFO L226 Difference]: Without dead ends: 7709 [2021-10-08 16:29:42,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3621.1ms TimeCoverageRelationStatistics Valid=282, Invalid=2268, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:29:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7709 states. [2021-10-08 16:29:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7709 to 7673. [2021-10-08 16:29:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7673 states, 7661 states have (on average 3.9865552799895574) internal successors, (30541), 7672 states have internal predecessors, (30541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:29:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 30541 transitions. [2021-10-08 16:29:42,705 INFO L78 Accepts]: Start accepts. Automaton has 7673 states and 30541 transitions. Word has length 27 [2021-10-08 16:29:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:29:42,705 INFO L470 AbstractCegarLoop]: Abstraction has 7673 states and 30541 transitions. [2021-10-08 16:29:42,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-08 16:29:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7673 states and 30541 transitions. [2021-10-08 16:29:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:29:42,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:29:42,710 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:29:42,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-08 16:29:42,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:42,911 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:29:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:29:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash 362422190, now seen corresponding path program 3 times [2021-10-08 16:29:42,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:29:42,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143753776] [2021-10-08 16:29:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:29:42,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:29:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:29:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:29:43,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:29:43,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143753776] [2021-10-08 16:29:43,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143753776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:43,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876570828] [2021-10-08 16:29:43,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:29:43,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:29:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:29:43,763 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) [2021-10-08 16:29:43,764 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 [2021-10-08 16:29:46,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:29:46,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:29:46,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:29:46,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:29:46,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:29:46,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:29:47,005 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:29:47,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:29:47,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:29:47,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:29:47,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:29:47,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:29:47,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:29:47,372 INFO L354 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2021-10-08 16:29:47,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:29:47,599 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:29:47,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-10-08 16:29:47,805 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:29:47,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2021-10-08 16:29:47,909 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:29:47,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2021-10-08 16:29:48,033 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-08 16:29:48,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2021-10-08 16:29:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:29:48,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876570828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:29:48,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:29:48,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 34 [2021-10-08 16:29:48,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839231221] [2021-10-08 16:29:48,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:29:48,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:29:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:29:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:29:48,120 INFO L87 Difference]: Start difference. First operand 7673 states and 30541 transitions. Second operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2021-10-08 16:30:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:30:02,396 INFO L93 Difference]: Finished difference Result 17339 states and 68008 transitions. [2021-10-08 16:30:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-08 16:30:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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 27 [2021-10-08 16:30:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:30:02,449 INFO L225 Difference]: With dead ends: 17339 [2021-10-08 16:30:02,449 INFO L226 Difference]: Without dead ends: 17339 [2021-10-08 16:30:02,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 9716.3ms TimeCoverageRelationStatistics Valid=1462, Invalid=12344, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:30:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17339 states. [2021-10-08 16:30:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17339 to 7673. [2021-10-08 16:30:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7673 states, 7661 states have (on average 3.982639342122438) internal successors, (30511), 7672 states have internal predecessors, (30511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:30:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 30511 transitions. [2021-10-08 16:30:02,681 INFO L78 Accepts]: Start accepts. Automaton has 7673 states and 30511 transitions. Word has length 27 [2021-10-08 16:30:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:30:02,681 INFO L470 AbstractCegarLoop]: Abstraction has 7673 states and 30511 transitions. [2021-10-08 16:30:02,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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) [2021-10-08 16:30:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7673 states and 30511 transitions. [2021-10-08 16:30:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:30:02,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:30:02,749 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:30:02,780 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 [2021-10-08 16:30:02,950 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,SelfDestructingSolverStorable54 [2021-10-08 16:30:02,950 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:30:02,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:30:02,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2134022236, now seen corresponding path program 2 times [2021-10-08 16:30:02,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:30:02,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516582042] [2021-10-08 16:30:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:30:02,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:30:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:30:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-08 16:30:03,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:30:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516582042] [2021-10-08 16:30:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516582042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318878218] [2021-10-08 16:30:03,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:30:03,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:30:03,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:30:03,018 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) [2021-10-08 16:30:03,026 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 [2021-10-08 16:30:04,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:30:04,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:30:04,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:30:04,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:30:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-08 16:30:04,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318878218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:04,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:30:04,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 10 [2021-10-08 16:30:04,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200566360] [2021-10-08 16:30:04,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:30:04,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:30:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:30:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:30:04,736 INFO L87 Difference]: Start difference. First operand 7673 states and 30511 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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) [2021-10-08 16:30:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:30:05,086 INFO L93 Difference]: Finished difference Result 10879 states and 42639 transitions. [2021-10-08 16:30:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:30:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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 28 [2021-10-08 16:30:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:30:05,112 INFO L225 Difference]: With dead ends: 10879 [2021-10-08 16:30:05,112 INFO L226 Difference]: Without dead ends: 8936 [2021-10-08 16:30:05,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:30:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8936 states. [2021-10-08 16:30:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8936 to 3206. [2021-10-08 16:30:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3206 states, 3200 states have (on average 3.7940625) internal successors, (12141), 3205 states have internal predecessors, (12141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:30:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 12141 transitions. [2021-10-08 16:30:05,210 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 12141 transitions. Word has length 28 [2021-10-08 16:30:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:30:05,210 INFO L470 AbstractCegarLoop]: Abstraction has 3206 states and 12141 transitions. [2021-10-08 16:30:05,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 11 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) [2021-10-08 16:30:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 12141 transitions. [2021-10-08 16:30:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:30:05,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:30:05,214 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:30:05,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:30:05,414 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,SelfDestructingSolverStorable55 [2021-10-08 16:30:05,415 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:30:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:30:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1680282029, now seen corresponding path program 3 times [2021-10-08 16:30:05,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:30:05,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996081129] [2021-10-08 16:30:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:30:05,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:30:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:30:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:30:06,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:30:06,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996081129] [2021-10-08 16:30:06,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996081129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:06,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258807935] [2021-10-08 16:30:06,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:30:06,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:30:06,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:30:06,387 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) [2021-10-08 16:30:06,389 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 [2021-10-08 16:30:08,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:30:08,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:30:08,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:30:08,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:30:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:08,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:08,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:08,804 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-08 16:30:08,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:30:10,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:30:10,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:10,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:11,025 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:30:11,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:30:12,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:12,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:13,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:13,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:14,061 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:30:14,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 92 [2021-10-08 16:30:15,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:16,084 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:30:16,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:30:16,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:16,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:16,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:16,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:16,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:30:16,742 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:30:16,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 203 [2021-10-08 16:30:16,949 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:30:16,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:30:17,126 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:30:17,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-08 16:30:17,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:30:17,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:30:17,345 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:30:17,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:30:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:30:17,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258807935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:17,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:30:17,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-08 16:30:17,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732268413] [2021-10-08 16:30:17,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 16:30:17,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:30:17,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 16:30:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:30:17,410 INFO L87 Difference]: Start difference. First operand 3206 states and 12141 transitions. Second operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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) [2021-10-08 16:30:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:30:25,959 INFO L93 Difference]: Finished difference Result 8027 states and 30881 transitions. [2021-10-08 16:30:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:30:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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 28 [2021-10-08 16:30:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:30:25,982 INFO L225 Difference]: With dead ends: 8027 [2021-10-08 16:30:25,982 INFO L226 Difference]: Without dead ends: 8027 [2021-10-08 16:30:25,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 5851.4ms TimeCoverageRelationStatistics Valid=430, Invalid=4126, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:30:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8027 states. [2021-10-08 16:30:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8027 to 4135. [2021-10-08 16:30:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 4129 states have (on average 4.047953499636716) internal successors, (16714), 4134 states have internal predecessors, (16714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:30:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 16714 transitions. [2021-10-08 16:30:26,097 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 16714 transitions. Word has length 28 [2021-10-08 16:30:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:30:26,098 INFO L470 AbstractCegarLoop]: Abstraction has 4135 states and 16714 transitions. [2021-10-08 16:30:26,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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) [2021-10-08 16:30:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 16714 transitions. [2021-10-08 16:30:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:30:26,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:30:26,102 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:30:26,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-08 16:30:26,302 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,SelfDestructingSolverStorable56 [2021-10-08 16:30:26,303 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:30:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:30:26,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1680282027, now seen corresponding path program 3 times [2021-10-08 16:30:26,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:30:26,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688298180] [2021-10-08 16:30:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:30:26,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:30:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:30:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:30:27,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:30:27,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688298180] [2021-10-08 16:30:27,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688298180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:27,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971147365] [2021-10-08 16:30:27,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:30:27,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:30:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:30:27,374 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) [2021-10-08 16:30:27,378 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 [2021-10-08 16:30:30,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:30:30,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:30:30,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-08 16:30:30,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:30:30,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:30:30,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:30:30,787 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:30:30,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:30:30,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:30:30,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:30:30,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:30:31,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:30:31,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:30:31,240 INFO L354 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2021-10-08 16:30:31,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 199 [2021-10-08 16:30:31,623 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:30:31,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-10-08 16:30:31,906 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:30:31,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-10-08 16:30:32,022 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:30:32,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:30:32,133 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:30:32,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:30:32,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:32,267 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-10-08 16:30:32,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 50 [2021-10-08 16:30:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:30:32,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971147365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:32,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:30:32,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 36 [2021-10-08 16:30:32,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817034073] [2021-10-08 16:30:32,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:30:32,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:30:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:30:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:30:32,359 INFO L87 Difference]: Start difference. First operand 4135 states and 16714 transitions. Second operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:30:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:30:49,402 INFO L93 Difference]: Finished difference Result 12776 states and 50475 transitions. [2021-10-08 16:30:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-08 16:30:49,403 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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 28 [2021-10-08 16:30:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:30:49,440 INFO L225 Difference]: With dead ends: 12776 [2021-10-08 16:30:49,440 INFO L226 Difference]: Without dead ends: 12776 [2021-10-08 16:30:49,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2995 ImplicationChecksByTransitivity, 11131.1ms TimeCoverageRelationStatistics Valid=1304, Invalid=10906, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:30:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12776 states. [2021-10-08 16:30:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12776 to 6474. [2021-10-08 16:30:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 6468 states have (on average 4.246134817563389) internal successors, (27464), 6473 states have internal predecessors, (27464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:30:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 27464 transitions. [2021-10-08 16:30:49,643 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 27464 transitions. Word has length 28 [2021-10-08 16:30:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:30:49,643 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 27464 transitions. [2021-10-08 16:30:49,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:30:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 27464 transitions. [2021-10-08 16:30:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:30:49,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:30:49,647 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:30:49,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-08 16:30:49,848 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,SelfDestructingSolverStorable57 [2021-10-08 16:30:49,848 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:30:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:30:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1680282025, now seen corresponding path program 3 times [2021-10-08 16:30:49,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:30:49,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810347254] [2021-10-08 16:30:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:30:49,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:30:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:30:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:30:50,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:30:50,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810347254] [2021-10-08 16:30:50,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810347254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:30:50,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947616062] [2021-10-08 16:30:50,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:30:50,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:30:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:30:50,776 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) [2021-10-08 16:30:50,777 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 [2021-10-08 16:30:53,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:30:53,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:30:53,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:30:53,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:30:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:53,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:53,132 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-08 16:30:53,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:30:54,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:30:55,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:30:55,393 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:30:55,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:30:57,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:30:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:30:57,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:30:57,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:30:58,474 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:30:58,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 90 [2021-10-08 16:31:00,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:31:00,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:31:00,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:31:00,238 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:31:00,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 92 treesize of output 158 [2021-10-08 16:31:00,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:00,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:00,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:00,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:00,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:00,944 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:31:00,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:31:01,368 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:31:01,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 60 [2021-10-08 16:31:01,695 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:31:01,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 60 [2021-10-08 16:31:01,856 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-10-08 16:31:01,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 55 [2021-10-08 16:31:02,016 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-10-08 16:31:02,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 64 [2021-10-08 16:31:02,226 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-10-08 16:31:02,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 77 [2021-10-08 16:31:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:31:02,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947616062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:02,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:31:02,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-08 16:31:02,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825652768] [2021-10-08 16:31:02,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 16:31:02,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:31:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 16:31:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:31:02,372 INFO L87 Difference]: Start difference. First operand 6474 states and 27464 transitions. Second operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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) [2021-10-08 16:31:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:31:08,724 INFO L93 Difference]: Finished difference Result 7028 states and 28294 transitions. [2021-10-08 16:31:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:31:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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 28 [2021-10-08 16:31:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:31:08,744 INFO L225 Difference]: With dead ends: 7028 [2021-10-08 16:31:08,745 INFO L226 Difference]: Without dead ends: 7028 [2021-10-08 16:31:08,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5104.3ms TimeCoverageRelationStatistics Valid=313, Invalid=2993, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:31:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-10-08 16:31:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 6474. [2021-10-08 16:31:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 6468 states have (on average 4.134817563388992) internal successors, (26744), 6473 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:31:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 26744 transitions. [2021-10-08 16:31:08,882 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 26744 transitions. Word has length 28 [2021-10-08 16:31:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:31:08,882 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 26744 transitions. [2021-10-08 16:31:08,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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) [2021-10-08 16:31:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 26744 transitions. [2021-10-08 16:31:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:31:08,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:31:08,886 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:31:08,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:31:09,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:09,088 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:31:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:31:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1680282022, now seen corresponding path program 3 times [2021-10-08 16:31:09,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:31:09,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021524021] [2021-10-08 16:31:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:31:09,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:31:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:31:10,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:31:10,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021524021] [2021-10-08 16:31:10,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021524021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:10,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200131366] [2021-10-08 16:31:10,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:31:10,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:31:10,159 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) [2021-10-08 16:31:10,160 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 [2021-10-08 16:31:12,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:31:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:31:12,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:31:12,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:31:12,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:31:13,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:31:13,172 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:31:13,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:31:13,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:31:13,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:31:13,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:31:13,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:31:13,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:31:13,571 INFO L354 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2021-10-08 16:31:13,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:31:13,817 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:31:13,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-10-08 16:31:14,084 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:31:14,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-10-08 16:31:14,187 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:31:14,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2021-10-08 16:31:14,306 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:31:14,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2021-10-08 16:31:14,434 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-08 16:31:14,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2021-10-08 16:31:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-08 16:31:14,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200131366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:14,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:31:14,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 36 [2021-10-08 16:31:14,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669840195] [2021-10-08 16:31:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:31:14,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:31:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:31:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:31:14,525 INFO L87 Difference]: Start difference. First operand 6474 states and 26744 transitions. Second operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:31:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:31:33,791 INFO L93 Difference]: Finished difference Result 13370 states and 51483 transitions. [2021-10-08 16:31:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-08 16:31:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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 28 [2021-10-08 16:31:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:31:33,830 INFO L225 Difference]: With dead ends: 13370 [2021-10-08 16:31:33,830 INFO L226 Difference]: Without dead ends: 13370 [2021-10-08 16:31:33,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 12585.9ms TimeCoverageRelationStatistics Valid=1408, Invalid=11932, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:31:33,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13370 states. [2021-10-08 16:31:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13370 to 6474. [2021-10-08 16:31:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 6468 states have (on average 4.0434446505875075) internal successors, (26153), 6473 states have internal predecessors, (26153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:31:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 26153 transitions. [2021-10-08 16:31:34,096 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 26153 transitions. Word has length 28 [2021-10-08 16:31:34,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:31:34,097 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 26153 transitions. [2021-10-08 16:31:34,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:31:34,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 26153 transitions. [2021-10-08 16:31:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:31:34,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:31:34,101 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:31:34,133 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 [2021-10-08 16:31:34,301 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,SelfDestructingSolverStorable59 [2021-10-08 16:31:34,302 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:31:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:31:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1649805836, now seen corresponding path program 7 times [2021-10-08 16:31:34,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:31:34,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987694981] [2021-10-08 16:31:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:31:34,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:31:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 16:31:34,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:31:34,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987694981] [2021-10-08 16:31:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987694981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:34,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498297594] [2021-10-08 16:31:34,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:31:34,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:34,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:31:34,453 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) [2021-10-08 16:31:34,455 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 [2021-10-08 16:31:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:31:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:31:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 16:31:36,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498297594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:36,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:31:36,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 16:31:36,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587344969] [2021-10-08 16:31:36,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:31:36,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:31:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:31:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:31:36,811 INFO L87 Difference]: Start difference. First operand 6474 states and 26153 transitions. Second operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 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) [2021-10-08 16:31:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:31:37,862 INFO L93 Difference]: Finished difference Result 10428 states and 39259 transitions. [2021-10-08 16:31:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:31:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 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 28 [2021-10-08 16:31:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:31:37,889 INFO L225 Difference]: With dead ends: 10428 [2021-10-08 16:31:37,890 INFO L226 Difference]: Without dead ends: 10112 [2021-10-08 16:31:37,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 602.7ms TimeCoverageRelationStatistics Valid=586, Invalid=2066, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:31:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10112 states. [2021-10-08 16:31:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10112 to 5035. [2021-10-08 16:31:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5029 states have (on average 3.9918472857426925) internal successors, (20075), 5034 states have internal predecessors, (20075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:31:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 20075 transitions. [2021-10-08 16:31:38,023 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 20075 transitions. Word has length 28 [2021-10-08 16:31:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:31:38,023 INFO L470 AbstractCegarLoop]: Abstraction has 5035 states and 20075 transitions. [2021-10-08 16:31:38,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 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) [2021-10-08 16:31:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 20075 transitions. [2021-10-08 16:31:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:31:38,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:31:38,028 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:31:38,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:31:38,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:38,233 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:31:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:31:38,234 INFO L82 PathProgramCache]: Analyzing trace with hash 733822487, now seen corresponding path program 4 times [2021-10-08 16:31:38,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:31:38,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839570057] [2021-10-08 16:31:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:31:38,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:31:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-08 16:31:38,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:31:38,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839570057] [2021-10-08 16:31:38,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839570057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:38,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033640040] [2021-10-08 16:31:38,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:31:38,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:31:38,499 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) [2021-10-08 16:31:38,500 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 [2021-10-08 16:31:40,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:31:40,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:31:40,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:31:40,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:31:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-08 16:31:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033640040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:40,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:31:40,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2021-10-08 16:31:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704141664] [2021-10-08 16:31:40,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:31:40,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:31:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:31:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:31:40,903 INFO L87 Difference]: Start difference. First operand 5035 states and 20075 transitions. Second operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 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) [2021-10-08 16:31:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:31:41,337 INFO L93 Difference]: Finished difference Result 6624 states and 25095 transitions. [2021-10-08 16:31:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:31:41,338 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 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 29 [2021-10-08 16:31:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:31:41,355 INFO L225 Difference]: With dead ends: 6624 [2021-10-08 16:31:41,355 INFO L226 Difference]: Without dead ends: 6624 [2021-10-08 16:31:41,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 328.2ms TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:31:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6624 states. [2021-10-08 16:31:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6624 to 3502. [2021-10-08 16:31:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3496 states have (on average 3.9465102974828374) internal successors, (13797), 3501 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:31:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 13797 transitions. [2021-10-08 16:31:41,442 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 13797 transitions. Word has length 29 [2021-10-08 16:31:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:31:41,442 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 13797 transitions. [2021-10-08 16:31:41,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 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) [2021-10-08 16:31:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 13797 transitions. [2021-10-08 16:31:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:31:41,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:31:41,446 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:31:41,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-08 16:31:41,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:41,647 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:31:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:31:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash 299782918, now seen corresponding path program 5 times [2021-10-08 16:31:41,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:31:41,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234143279] [2021-10-08 16:31:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:31:41,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:31:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:31:42,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:31:42,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234143279] [2021-10-08 16:31:42,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234143279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:42,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169587343] [2021-10-08 16:31:42,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:31:42,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:31:42,759 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) [2021-10-08 16:31:42,777 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 [2021-10-08 16:31:48,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:31:48,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:31:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:31:48,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:31:48,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:31:48,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:31:48,822 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:31:48,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:31:48,897 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:31:48,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:31:48,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:48,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:49,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:49,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:49,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:49,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:31:49,195 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:31:49,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:31:49,378 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:31:49,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:31:49,525 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:31:49,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:31:49,602 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:31:49,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:31:49,696 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:31:49,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:31:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:31:49,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169587343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:49,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:31:49,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 36 [2021-10-08 16:31:49,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576214692] [2021-10-08 16:31:49,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:31:49,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:31:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:31:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:31:49,761 INFO L87 Difference]: Start difference. First operand 3502 states and 13797 transitions. Second operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:31:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:31:58,168 INFO L93 Difference]: Finished difference Result 6861 states and 25752 transitions. [2021-10-08 16:31:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:31:58,169 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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 30 [2021-10-08 16:31:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:31:58,186 INFO L225 Difference]: With dead ends: 6861 [2021-10-08 16:31:58,186 INFO L226 Difference]: Without dead ends: 6861 [2021-10-08 16:31:58,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 5258.0ms TimeCoverageRelationStatistics Valid=620, Invalid=4930, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:31:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2021-10-08 16:31:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 3577. [2021-10-08 16:31:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3571 states have (on average 3.911509381125735) internal successors, (13968), 3576 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:31:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 13968 transitions. [2021-10-08 16:31:58,274 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 13968 transitions. Word has length 30 [2021-10-08 16:31:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:31:58,274 INFO L470 AbstractCegarLoop]: Abstraction has 3577 states and 13968 transitions. [2021-10-08 16:31:58,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:31:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 13968 transitions. [2021-10-08 16:31:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:31:58,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:31:58,278 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:31:58,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:31:58,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:58,479 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:31:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:31:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash 299782923, now seen corresponding path program 4 times [2021-10-08 16:31:58,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:31:58,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655883820] [2021-10-08 16:31:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:31:58,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:31:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:31:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:31:59,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:31:59,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655883820] [2021-10-08 16:31:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655883820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:31:59,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72352001] [2021-10-08 16:31:59,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:31:59,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:31:59,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:31:59,495 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) [2021-10-08 16:31:59,496 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 [2021-10-08 16:32:01,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:32:01,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:32:01,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:32:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:32:01,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:32:02,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:32:02,169 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:32:02,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:32:02,242 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:32:02,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:32:02,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:02,542 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:32:02,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:32:02,726 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:32:02,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:32:02,879 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:02,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:32:02,955 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:02,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:32:03,045 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:32:03,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:32:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:32:03,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72352001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:03,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:32:03,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 36 [2021-10-08 16:32:03,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928198428] [2021-10-08 16:32:03,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:32:03,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:32:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:32:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:32:03,112 INFO L87 Difference]: Start difference. First operand 3577 states and 13968 transitions. Second operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:32:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:32:12,029 INFO L93 Difference]: Finished difference Result 6853 states and 25725 transitions. [2021-10-08 16:32:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 16:32:12,029 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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 30 [2021-10-08 16:32:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:32:12,047 INFO L225 Difference]: With dead ends: 6853 [2021-10-08 16:32:12,047 INFO L226 Difference]: Without dead ends: 6853 [2021-10-08 16:32:12,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 5215.1ms TimeCoverageRelationStatistics Valid=627, Invalid=5073, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:32:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-10-08 16:32:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 3577. [2021-10-08 16:32:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3571 states have (on average 3.90870904508541) internal successors, (13958), 3576 states have internal predecessors, (13958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:32:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 13958 transitions. [2021-10-08 16:32:12,138 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 13958 transitions. Word has length 30 [2021-10-08 16:32:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:32:12,138 INFO L470 AbstractCegarLoop]: Abstraction has 3577 states and 13958 transitions. [2021-10-08 16:32:12,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 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) [2021-10-08 16:32:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 13958 transitions. [2021-10-08 16:32:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:32:12,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:32:12,144 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:32:12,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:32:12,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-08 16:32:12,349 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:32:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:32:12,350 INFO L82 PathProgramCache]: Analyzing trace with hash 672867992, now seen corresponding path program 4 times [2021-10-08 16:32:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:32:12,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820451965] [2021-10-08 16:32:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:32:12,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:32:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:32:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:32:13,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:32:13,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820451965] [2021-10-08 16:32:13,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820451965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:13,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81123899] [2021-10-08 16:32:13,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:32:13,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:32:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:32:13,537 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) [2021-10-08 16:32:13,537 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 [2021-10-08 16:32:15,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:32:15,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:32:15,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:32:15,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:32:15,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:32:16,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:32:16,257 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:32:16,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:32:16,338 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:32:16,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:32:16,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:32:16,684 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:32:16,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:32:16,887 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:32:16,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:32:17,072 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:32:17,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:32:17,150 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:17,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:32:17,231 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:17,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:32:17,324 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:32:17,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:32:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:32:17,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81123899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:17,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:32:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 38 [2021-10-08 16:32:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062079655] [2021-10-08 16:32:17,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:32:17,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:32:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:32:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1450, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:32:17,394 INFO L87 Difference]: Start difference. First operand 3577 states and 13958 transitions. Second operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:32:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:32:28,248 INFO L93 Difference]: Finished difference Result 9723 states and 35995 transitions. [2021-10-08 16:32:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:32:28,248 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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 31 [2021-10-08 16:32:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:32:28,271 INFO L225 Difference]: With dead ends: 9723 [2021-10-08 16:32:28,272 INFO L226 Difference]: Without dead ends: 9006 [2021-10-08 16:32:28,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 6285.5ms TimeCoverageRelationStatistics Valid=604, Invalid=5096, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:32:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2021-10-08 16:32:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 3505. [2021-10-08 16:32:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3499 states have (on average 3.85424406973421) internal successors, (13486), 3504 states have internal predecessors, (13486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:32:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 13486 transitions. [2021-10-08 16:32:28,372 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 13486 transitions. Word has length 31 [2021-10-08 16:32:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:32:28,372 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 13486 transitions. [2021-10-08 16:32:28,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:32:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 13486 transitions. [2021-10-08 16:32:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:32:28,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:32:28,377 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:32:28,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:32:28,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:32:28,578 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:32:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:32:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash 672867997, now seen corresponding path program 4 times [2021-10-08 16:32:28,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:32:28,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410054756] [2021-10-08 16:32:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:32:28,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:32:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:32:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:32:29,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:32:29,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410054756] [2021-10-08 16:32:29,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410054756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:29,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589718823] [2021-10-08 16:32:29,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:32:29,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:32:29,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:32:29,861 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) [2021-10-08 16:32:29,862 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 [2021-10-08 16:32:32,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:32:32,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:32:32,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:32:32,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:32:32,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:32:32,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:32:32,744 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:32:32,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-10-08 16:32:32,833 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:32:32,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:32:32,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:32,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:32,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:32,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:33,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:33,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:33,184 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:32:33,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:32:33,402 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:32:33,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:32:33,611 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:32:33,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:32:33,694 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:33,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:32:33,780 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:32:33,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-08 16:32:33,883 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:32:33,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:32:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:32:33,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589718823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:33,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:32:33,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 38 [2021-10-08 16:32:33,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184551533] [2021-10-08 16:32:33,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:32:33,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:32:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:32:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1450, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:32:33,961 INFO L87 Difference]: Start difference. First operand 3505 states and 13486 transitions. Second operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:32:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:32:44,988 INFO L93 Difference]: Finished difference Result 8890 states and 32917 transitions. [2021-10-08 16:32:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:32:44,989 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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 31 [2021-10-08 16:32:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:32:45,011 INFO L225 Difference]: With dead ends: 8890 [2021-10-08 16:32:45,012 INFO L226 Difference]: Without dead ends: 8890 [2021-10-08 16:32:45,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 6465.2ms TimeCoverageRelationStatistics Valid=602, Invalid=5098, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:32:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2021-10-08 16:32:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 3505. [2021-10-08 16:32:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3499 states have (on average 3.810231494712775) internal successors, (13332), 3504 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:32:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 13332 transitions. [2021-10-08 16:32:45,139 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 13332 transitions. Word has length 31 [2021-10-08 16:32:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:32:45,140 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 13332 transitions. [2021-10-08 16:32:45,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:32:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 13332 transitions. [2021-10-08 16:32:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:32:45,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:32:45,144 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:32:45,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:32:45,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:32:45,345 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:32:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:32:45,347 INFO L82 PathProgramCache]: Analyzing trace with hash 703344183, now seen corresponding path program 8 times [2021-10-08 16:32:45,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:32:45,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669883624] [2021-10-08 16:32:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:32:45,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:32:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:32:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-08 16:32:46,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:32:46,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669883624] [2021-10-08 16:32:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669883624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:32:46,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608162808] [2021-10-08 16:32:46,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:32:46,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:32:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:32:46,304 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) [2021-10-08 16:32:46,329 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 [2021-10-08 16:32:48,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:32:48,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:32:48,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-08 16:32:48,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:32:48,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:48,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:48,708 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:32:48,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-08 16:32:51,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:32:51,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:51,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:51,866 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:32:51,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 66 treesize of output 112 [2021-10-08 16:32:53,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:53,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:54,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:55,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:56,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:56,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:57,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:57,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:32:57,612 INFO L354 Elim1Store]: treesize reduction 164, result has 34.1 percent of original size [2021-10-08 16:32:57,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 5 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 80 treesize of output 146 [2021-10-08 16:32:57,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:57,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:58,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:58,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:58,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:58,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:32:58,340 INFO L354 Elim1Store]: treesize reduction 114, result has 17.4 percent of original size [2021-10-08 16:32:58,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 207 [2021-10-08 16:32:58,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 16:32:58,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:32:58,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-08 16:32:58,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743377787] [2021-10-08 16:32:58,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:32:58,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:32:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:32:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:32:58,694 INFO L87 Difference]: Start difference. First operand 3505 states and 13332 transitions. Second operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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) [2021-10-08 16:32:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:32:59,976 INFO L93 Difference]: Finished difference Result 3549 states and 13477 transitions. [2021-10-08 16:32:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:32:59,977 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 31 [2021-10-08 16:32:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:32:59,986 INFO L225 Difference]: With dead ends: 3549 [2021-10-08 16:32:59,986 INFO L226 Difference]: Without dead ends: 3549 [2021-10-08 16:32:59,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1423.4ms TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:32:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-10-08 16:33:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3515. [2021-10-08 16:33:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3515 states, 3509 states have (on average 3.8196067255628385) internal successors, (13403), 3514 states have internal predecessors, (13403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:33:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 13403 transitions. [2021-10-08 16:33:00,047 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 13403 transitions. Word has length 31 [2021-10-08 16:33:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:33:00,048 INFO L470 AbstractCegarLoop]: Abstraction has 3515 states and 13403 transitions. [2021-10-08 16:33:00,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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) [2021-10-08 16:33:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 13403 transitions. [2021-10-08 16:33:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:33:00,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:33:00,052 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:33:00,085 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 [2021-10-08 16:33:00,253 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,SelfDestructingSolverStorable66 [2021-10-08 16:33:00,253 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:33:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:33:00,254 INFO L82 PathProgramCache]: Analyzing trace with hash 703344185, now seen corresponding path program 6 times [2021-10-08 16:33:00,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:33:00,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985579277] [2021-10-08 16:33:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:33:00,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:33:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:33:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:33:01,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:33:01,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985579277] [2021-10-08 16:33:01,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985579277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:33:01,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130521498] [2021-10-08 16:33:01,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:33:01,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:33:01,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:33:01,384 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) [2021-10-08 16:33:01,385 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 [2021-10-08 16:33:04,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:33:04,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:33:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:33:04,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:33:04,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:33:05,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:33:05,212 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:33:05,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:33:05,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:05,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:05,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:05,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:05,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:05,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2021-10-08 16:33:06,168 INFO L354 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2021-10-08 16:33:06,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 205 [2021-10-08 16:33:06,422 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-08 16:33:06,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-10-08 16:33:06,659 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:33:06,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:33:06,768 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:33:06,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:33:06,881 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-08 16:33:06,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-10-08 16:33:07,009 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-08 16:33:07,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2021-10-08 16:33:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-08 16:33:07,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130521498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:33:07,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:33:07,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 39 [2021-10-08 16:33:07,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733172035] [2021-10-08 16:33:07,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:33:07,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:33:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:33:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1499, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:33:07,106 INFO L87 Difference]: Start difference. First operand 3515 states and 13403 transitions. Second operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 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) [2021-10-08 16:33:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:33:34,529 INFO L93 Difference]: Finished difference Result 7477 states and 27295 transitions. [2021-10-08 16:33:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-08 16:33:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 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 31 [2021-10-08 16:33:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:33:34,547 INFO L225 Difference]: With dead ends: 7477 [2021-10-08 16:33:34,547 INFO L226 Difference]: Without dead ends: 7477 [2021-10-08 16:33:34,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5586 ImplicationChecksByTransitivity, 14858.6ms TimeCoverageRelationStatistics Valid=1907, Invalid=18685, Unknown=0, NotChecked=0, Total=20592 [2021-10-08 16:33:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2021-10-08 16:33:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 3697. [2021-10-08 16:33:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3691 states have (on average 3.7984286101327553) internal successors, (14020), 3696 states have internal predecessors, (14020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:33:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 14020 transitions. [2021-10-08 16:33:34,637 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 14020 transitions. Word has length 31 [2021-10-08 16:33:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:33:34,637 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 14020 transitions. [2021-10-08 16:33:34,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 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) [2021-10-08 16:33:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 14020 transitions. [2021-10-08 16:33:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:33:34,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:33:34,642 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:33:34,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-08 16:33:34,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:33:34,843 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:33:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:33:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash 703344187, now seen corresponding path program 4 times [2021-10-08 16:33:34,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:33:34,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549528265] [2021-10-08 16:33:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:33:34,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:33:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:33:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 16:33:35,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:33:35,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549528265] [2021-10-08 16:33:35,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549528265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:33:35,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283504591] [2021-10-08 16:33:35,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:33:35,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:33:35,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:33:35,999 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) [2021-10-08 16:33:35,999 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 [2021-10-08 16:33:38,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:33:38,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:33:38,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-08 16:33:38,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:33:38,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:33:38,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:33:38,733 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:33:38,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 126 [2021-10-08 16:33:42,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:33:42,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:33:42,992 INFO L354 Elim1Store]: treesize reduction 278, result has 18.7 percent of original size [2021-10-08 16:33:42,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 79 treesize of output 125 [2021-10-08 16:33:44,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:46,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:47,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:47,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:48,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:48,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:49,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:33:49,660 INFO L354 Elim1Store]: treesize reduction 164, result has 34.1 percent of original size [2021-10-08 16:33:49,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 5 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 93 treesize of output 159 [2021-10-08 16:33:49,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:49,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:50,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:50,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:50,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:50,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:33:50,291 INFO L354 Elim1Store]: treesize reduction 88, result has 21.4 percent of original size [2021-10-08 16:33:50,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 216 treesize of output 197 [2021-10-08 16:33:50,518 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-10-08 16:33:50,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 44 [2021-10-08 16:33:50,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:33:50,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:33:50,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:33:51,035 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-10-08 16:33:51,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 45 [2021-10-08 16:33:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:33:51,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283504591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:33:51,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:33:51,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2021-10-08 16:33:51,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897071567] [2021-10-08 16:33:51,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:33:51,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:33:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:33:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1182, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:33:51,115 INFO L87 Difference]: Start difference. First operand 3697 states and 14020 transitions. Second operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 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) [2021-10-08 16:33:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:33:58,104 INFO L93 Difference]: Finished difference Result 3731 states and 14064 transitions. [2021-10-08 16:33:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:33:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 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 31 [2021-10-08 16:33:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:33:58,113 INFO L225 Difference]: With dead ends: 3731 [2021-10-08 16:33:58,114 INFO L226 Difference]: Without dead ends: 3731 [2021-10-08 16:33:58,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 5598.9ms TimeCoverageRelationStatistics Valid=355, Invalid=3677, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:33:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-10-08 16:33:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3697. [2021-10-08 16:33:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3691 states have (on average 3.790300731509076) internal successors, (13990), 3696 states have internal predecessors, (13990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:33:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 13990 transitions. [2021-10-08 16:33:58,175 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 13990 transitions. Word has length 31 [2021-10-08 16:33:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:33:58,176 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 13990 transitions. [2021-10-08 16:33:58,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 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) [2021-10-08 16:33:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 13990 transitions. [2021-10-08 16:33:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:33:58,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:33:58,182 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:33:58,215 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 [2021-10-08 16:33:58,383 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,SelfDestructingSolverStorable68 [2021-10-08 16:33:58,383 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:33:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:33:58,384 INFO L82 PathProgramCache]: Analyzing trace with hash 703344190, now seen corresponding path program 5 times [2021-10-08 16:33:58,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:33:58,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564268629] [2021-10-08 16:33:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:33:58,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:33:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:33:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:33:59,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:33:59,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564268629] [2021-10-08 16:33:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564268629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:33:59,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344796711] [2021-10-08 16:33:59,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:33:59,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:33:59,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:33:59,536 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) [2021-10-08 16:33:59,537 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 [2021-10-08 16:34:03,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:34:03,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:34:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:34:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:34:03,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:34:03,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:34:03,736 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:34:03,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:34:03,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:03,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:03,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:03,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:03,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:03,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:04,057 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:34:04,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 191 [2021-10-08 16:34:04,247 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:34:04,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:34:04,402 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:04,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:34:04,485 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:04,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:34:04,562 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:04,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-10-08 16:34:04,664 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-08 16:34:04,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-10-08 16:34:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:34:04,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344796711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:04,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:34:04,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 38 [2021-10-08 16:34:04,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88376647] [2021-10-08 16:34:04,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:34:04,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:34:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:34:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1449, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:34:04,735 INFO L87 Difference]: Start difference. First operand 3697 states and 13990 transitions. Second operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:34:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:34:11,566 INFO L93 Difference]: Finished difference Result 6901 states and 25467 transitions. [2021-10-08 16:34:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:34:11,567 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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 31 [2021-10-08 16:34:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:34:11,584 INFO L225 Difference]: With dead ends: 6901 [2021-10-08 16:34:11,584 INFO L226 Difference]: Without dead ends: 6901 [2021-10-08 16:34:11,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 4128.2ms TimeCoverageRelationStatistics Valid=438, Invalid=4118, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:34:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2021-10-08 16:34:11,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 3776. [2021-10-08 16:34:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3770 states have (on average 3.7522546419098144) internal successors, (14146), 3775 states have internal predecessors, (14146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:34:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 14146 transitions. [2021-10-08 16:34:11,672 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 14146 transitions. Word has length 31 [2021-10-08 16:34:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:34:11,672 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 14146 transitions. [2021-10-08 16:34:11,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2021-10-08 16:34:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 14146 transitions. [2021-10-08 16:34:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:34:11,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:34:11,676 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:34:11,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:34:11,877 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,SelfDestructingSolverStorable69 [2021-10-08 16:34:11,877 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:34:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:34:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1305221816, now seen corresponding path program 1 times [2021-10-08 16:34:11,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:34:11,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040575337] [2021-10-08 16:34:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:34:11,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:34:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:34:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:34:11,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:34:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040575337] [2021-10-08 16:34:11,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040575337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:11,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721758045] [2021-10-08 16:34:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:34:11,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:11,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:34:11,956 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) [2021-10-08 16:34:11,978 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 [2021-10-08 16:34:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:34:14,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:34:14,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:34:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:34:14,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721758045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:14,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:34:14,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-08 16:34:14,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122875599] [2021-10-08 16:34:14,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:34:14,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:34:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:34:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:34:14,683 INFO L87 Difference]: Start difference. First operand 3776 states and 14146 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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) [2021-10-08 16:34:14,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:34:14,810 INFO L93 Difference]: Finished difference Result 4052 states and 15060 transitions. [2021-10-08 16:34:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:34:14,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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 32 [2021-10-08 16:34:14,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:34:14,820 INFO L225 Difference]: With dead ends: 4052 [2021-10-08 16:34:14,820 INFO L226 Difference]: Without dead ends: 4052 [2021-10-08 16:34:14,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:34:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-10-08 16:34:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3756. [2021-10-08 16:34:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3750 states have (on average 3.716) internal successors, (13935), 3755 states have internal predecessors, (13935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:34:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 13935 transitions. [2021-10-08 16:34:14,885 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 13935 transitions. Word has length 32 [2021-10-08 16:34:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:34:14,885 INFO L470 AbstractCegarLoop]: Abstraction has 3756 states and 13935 transitions. [2021-10-08 16:34:14,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 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) [2021-10-08 16:34:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 13935 transitions. [2021-10-08 16:34:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:34:14,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:34:14,889 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:34:14,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-08 16:34:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:15,090 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:34:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:34:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash -615920411, now seen corresponding path program 4 times [2021-10-08 16:34:15,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:34:15,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834731315] [2021-10-08 16:34:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:34:15,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:34:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:34:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 16:34:16,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:34:16,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834731315] [2021-10-08 16:34:16,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834731315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:16,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31294431] [2021-10-08 16:34:16,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:34:16,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:34:16,124 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) [2021-10-08 16:34:16,125 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 [2021-10-08 16:34:18,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:34:18,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:34:18,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-08 16:34:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:34:18,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:18,995 INFO L354 Elim1Store]: treesize reduction 346, result has 12.6 percent of original size [2021-10-08 16:34:18,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 204 treesize of output 226 [2021-10-08 16:34:21,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:34:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:22,672 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:34:22,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-08 16:34:24,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:25,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:25,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:26,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:27,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:27,816 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:34:27,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 100 [2021-10-08 16:34:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:29,674 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:34:29,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-08 16:34:29,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:29,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:30,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:30,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:30,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:34:30,295 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:34:30,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 203 [2021-10-08 16:34:30,525 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:34:30,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:34:30,710 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:34:30,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-08 16:34:30,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:34:30,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:30,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:31,036 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-08 16:34:31,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-08 16:34:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-08 16:34:31,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31294431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:31,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:34:31,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 37 [2021-10-08 16:34:31,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290697645] [2021-10-08 16:34:31,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:34:31,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:34:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:34:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:34:31,110 INFO L87 Difference]: Start difference. First operand 3756 states and 13935 transitions. Second operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 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) [2021-10-08 16:34:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:34:37,607 INFO L93 Difference]: Finished difference Result 4563 states and 16964 transitions. [2021-10-08 16:34:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:34:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 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 32 [2021-10-08 16:34:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:34:37,618 INFO L225 Difference]: With dead ends: 4563 [2021-10-08 16:34:37,618 INFO L226 Difference]: Without dead ends: 4563 [2021-10-08 16:34:37,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 4658.5ms TimeCoverageRelationStatistics Valid=332, Invalid=3208, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:34:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2021-10-08 16:34:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 3910. [2021-10-08 16:34:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3904 states have (on average 3.8734631147540983) internal successors, (15122), 3909 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:34:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 15122 transitions. [2021-10-08 16:34:37,693 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 15122 transitions. Word has length 32 [2021-10-08 16:34:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:34:37,693 INFO L470 AbstractCegarLoop]: Abstraction has 3910 states and 15122 transitions. [2021-10-08 16:34:37,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 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) [2021-10-08 16:34:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 15122 transitions. [2021-10-08 16:34:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:34:37,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:34:37,697 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:34:37,732 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 [2021-10-08 16:34:37,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:37,898 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:34:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:34:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash -615920409, now seen corresponding path program 5 times [2021-10-08 16:34:37,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:34:37,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242357875] [2021-10-08 16:34:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:34:37,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:34:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:34:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 16:34:39,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:34:39,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242357875] [2021-10-08 16:34:39,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242357875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:39,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247185690] [2021-10-08 16:34:39,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:34:39,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:39,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:34:39,311 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) [2021-10-08 16:34:39,314 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 [2021-10-08 16:34:43,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:34:43,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:34:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:34:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:34:43,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:34:43,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:34:43,910 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:34:43,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-08 16:34:43,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:34:44,256 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:34:44,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 189 [2021-10-08 16:34:44,466 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:34:44,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:34:44,661 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-08 16:34:44,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-08 16:34:44,742 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:44,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:34:44,826 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:44,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:34:44,912 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-08 16:34:44,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 16:34:45,013 INFO L354 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2021-10-08 16:34:45,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-10-08 16:34:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 16:34:45,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247185690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:45,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:34:45,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17] total 40 [2021-10-08 16:34:45,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183315631] [2021-10-08 16:34:45,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-08 16:34:45,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:34:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-08 16:34:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1608, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:34:45,088 INFO L87 Difference]: Start difference. First operand 3910 states and 15122 transitions. Second operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 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) [2021-10-08 16:34:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:34:54,625 INFO L93 Difference]: Finished difference Result 8197 states and 30166 transitions. [2021-10-08 16:34:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:34:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 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 32 [2021-10-08 16:34:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:34:54,645 INFO L225 Difference]: With dead ends: 8197 [2021-10-08 16:34:54,645 INFO L226 Difference]: Without dead ends: 7342 [2021-10-08 16:34:54,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 5301.0ms TimeCoverageRelationStatistics Valid=443, Invalid=4387, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:34:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7342 states. [2021-10-08 16:34:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7342 to 3739. [2021-10-08 16:34:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3733 states have (on average 3.8475756763996785) internal successors, (14363), 3738 states have internal predecessors, (14363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:34:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 14363 transitions. [2021-10-08 16:34:54,782 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 14363 transitions. Word has length 32 [2021-10-08 16:34:54,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:34:54,782 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 14363 transitions. [2021-10-08 16:34:54,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 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) [2021-10-08 16:34:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 14363 transitions. [2021-10-08 16:34:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:34:54,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:34:54,786 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:34:54,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-08 16:34:54,999 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,SelfDestructingSolverStorable72 [2021-10-08 16:34:54,999 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2021-10-08 16:34:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:34:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -615920407, now seen corresponding path program 4 times [2021-10-08 16:34:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:34:55,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886546991] [2021-10-08 16:34:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:34:55,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:34:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:34:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-08 16:34:56,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:34:56,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886546991] [2021-10-08 16:34:56,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886546991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:34:56,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753534668] [2021-10-08 16:34:56,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:34:56,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:34:56,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:34:56,194 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) [2021-10-08 16:34:56,198 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 [2021-10-08 16:34:58,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:34:58,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:34:58,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-08 16:34:58,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:34:59,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:59,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:59,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:34:59,133 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-08 16:34:59,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 92 [2021-10-08 16:35:02,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:35:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:35:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:35:02,969 INFO L354 Elim1Store]: treesize reduction 270, result has 19.2 percent of original size [2021-10-08 16:35:02,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2021-10-08 16:35:05,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:06,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:07,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:08,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:08,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:09,562 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-10-08 16:35:09,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 98 [2021-10-08 16:35:11,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:35:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:35:11,632 INFO L354 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-10-08 16:35:11,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 100 treesize of output 166 [2021-10-08 16:35:12,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:35:12,433 INFO L354 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2021-10-08 16:35:12,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 201 [2021-10-08 16:35:12,866 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:35:12,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 60 [2021-10-08 16:35:13,213 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-08 16:35:13,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2021-10-08 16:35:13,397 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-10-08 16:35:13,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 54 [2021-10-08 16:35:13,577 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-10-08 16:35:13,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 63 [2021-10-08 16:35:13,782 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-10-08 16:35:13,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 72 [2021-10-08 16:35:14,037 INFO L354 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2021-10-08 16:35:14,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 92 [2021-10-08 16:35:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-08 16:35:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753534668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:35:14,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:14,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2021-10-08 16:35:14,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25046767] [2021-10-08 16:35:14,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:35:14,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:35:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:35:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1324, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:35:14,167 INFO L87 Difference]: Start difference. First operand 3739 states and 14363 transitions. Second operand has 38 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 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) Received shutdown request... [2021-10-08 16:35:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:35:15,316 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,317 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 [2021-10-08 16:35:15,320 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:35:15,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-08 16:35:15,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:35:15,519 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,522 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,525 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,526 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,527 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,528 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,528 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:35:15,535 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:35:15,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:35:15,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:35:15 BasicIcfg [2021-10-08 16:35:15,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:35:15,537 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:35:15,538 INFO L168 Benchmark]: Toolchain (without parser) took 733604.13 ms. Allocated memory was 152.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 127.9 MB in the beginning and 883.9 MB in the end (delta: -756.1 MB). Peak memory consumption was 449.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,538 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:35:15,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.75 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 115.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,539 INFO L168 Benchmark]: Boogie Preprocessor took 94.09 ms. Allocated memory is still 152.0 MB. Free memory was 113.4 MB in the beginning and 111.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,539 INFO L168 Benchmark]: RCFGBuilder took 1294.34 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 100.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,539 INFO L168 Benchmark]: TraceAbstraction took 731820.67 ms. Allocated memory was 152.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.5 MB in the beginning and 883.9 MB in the end (delta: -784.4 MB). Peak memory consumption was 420.4 MB. Max. memory is 8.0 GB. [2021-10-08 16:35:15,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.75 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 115.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.09 ms. Allocated memory is still 152.0 MB. Free memory was 113.4 MB in the beginning and 111.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1294.34 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 100.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 731820.67 ms. Allocated memory was 152.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 99.5 MB in the beginning and 883.9 MB in the end (delta: -784.4 MB). Peak memory consumption was 420.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21085.8ms, 301 PlacesBefore, 71 PlacesAfterwards, 319 TransitionsBefore, 70 TransitionsAfterwards, 5434 CoEnabledTransitionPairs, 8 FixpointIterations, 234 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 10 ConcurrentYvCompositions, 19 ChoiceCompositions, 365 TotalNumberOfCompositions, 10177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6573, positive: 6406, positive conditional: 0, positive unconditional: 6406, negative: 167, negative conditional: 0, negative unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3289, positive: 3250, positive conditional: 0, positive unconditional: 3250, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3289, positive: 3248, positive conditional: 0, positive unconditional: 3248, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 382, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 381, negative conditional: 0, negative unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6573, positive: 3156, positive conditional: 0, positive unconditional: 3156, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 3289, unknown conditional: 0, unknown unconditional: 3289] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 286, Positive conditional cache size: 0, Positive unconditional cache size: 286, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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: 128]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 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 (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 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 (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 101]: 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 (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 102]: 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 (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 103]: 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 (3739states) and FLOYD_HOARE automaton (currently 11 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 362 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 731588.3ms, OverallIterations: 74, TraceHistogramMax: 6, EmptinessCheckTime: 269.4ms, AutomataDifference: 334201.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21260.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6524 SDtfs, 42414 SDslu, 73305 SDs, 0 SdLazy, 148195 SolverSat, 8557 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 134967.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3905 GetRequests, 876 SyntacticMatches, 17 SemanticMatches, 3012 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43359 ImplicationChecksByTransitivity, 216942.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7731occurred in iteration=50, InterpolantAutomatonStates: 1895, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10798.8ms AutomataMinimizationTime, 73 MinimizatonAttempts, 230882 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1132.3ms SsaConstructionTime, 19664.9ms SatisfiabilityAnalysisTime, 248615.4ms InterpolantComputationTime, 2817 NumberOfCodeBlocks, 2796 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 2679 ConstructedInterpolants, 289 QuantifiedInterpolants, 71739 SizeOfPredicates, 1203 NumberOfNonLiveVariables, 17112 ConjunctsInSsa, 2099 ConjunctsInUnsatCore, 138 InterpolantComputations, 13 PerfectInterpolantSequences, 1937/3925 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