/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/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:54:02,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:54:02,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:54:02,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:54:02,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:54:02,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:54:02,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:54:02,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:54:02,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:54:02,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:54:02,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:54:02,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:54:02,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:54:02,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:54:02,527 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:54:02,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:54:02,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:54:02,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:54:02,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:54:02,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:54:02,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:54:02,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:54:02,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:54:02,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:54:02,529 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:54:02,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:54:02,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:54:02,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:54:02,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:54:02,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:54:02,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:54:02,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:54:02,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:54:02,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:54:02,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:54:02,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:54:02,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:54:02,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:54:02,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:54:02,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:54:02,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:54:02,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:54:02,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:54:02,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:54:02,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:54:02,949 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:54:02,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-07 14:54:03,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2910de4c/c7c4bb371fbd47e2a83a4b4924e4bc9e/FLAGeb6a869c6 [2021-10-07 14:54:03,657 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:54:03,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-07 14:54:03,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2910de4c/c7c4bb371fbd47e2a83a4b4924e4bc9e/FLAGeb6a869c6 [2021-10-07 14:54:03,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2910de4c/c7c4bb371fbd47e2a83a4b4924e4bc9e [2021-10-07 14:54:03,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:54:04,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:54:04,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:54:04,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:54:04,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:54:04,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:54:03" (1/1) ... [2021-10-07 14:54:04,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91aa71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04, skipping insertion in model container [2021-10-07 14:54:04,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:54:03" (1/1) ... [2021-10-07 14:54:04,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:54:04,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:54:04,259 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/loop-tiling-eq.wvr.c[2550,2563] [2021-10-07 14:54:04,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:54:04,278 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:54:04,323 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/loop-tiling-eq.wvr.c[2550,2563] [2021-10-07 14:54:04,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:54:04,365 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:54:04,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04 WrapperNode [2021-10-07 14:54:04,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:54:04,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:54:04,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:54:04,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:54:04,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:54:04,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:54:04,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:54:04,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:54:04,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:54:04,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:54:04,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:54:04,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:54:04,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (1/1) ... [2021-10-07 14:54:04,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:54:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:04,641 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) [2021-10-07 14:54:04,669 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 [2021-10-07 14:54:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-07 14:54:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:54:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:54:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:54:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:54:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:54:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-07 14:54:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:54:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:54:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:54:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:54:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:54:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:54:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:54:04,724 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:54:05,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:54:05,386 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2021-10-07 14:54:05,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:54:05 BoogieIcfgContainer [2021-10-07 14:54:05,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:54:05,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:54:05,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:54:05,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:54:05,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:54:03" (1/3) ... [2021-10-07 14:54:05,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0e98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:54:05, skipping insertion in model container [2021-10-07 14:54:05,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:04" (2/3) ... [2021-10-07 14:54:05,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0e98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:54:05, skipping insertion in model container [2021-10-07 14:54:05,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:54:05" (3/3) ... [2021-10-07 14:54:05,399 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2021-10-07 14:54:05,406 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:54:05,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:54:05,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-07 14:54:05,407 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:54:05,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,459 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,460 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,461 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,462 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,462 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,463 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,465 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,465 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,465 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,465 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,466 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,466 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,466 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,466 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,473 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,475 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,475 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,476 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,476 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,476 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,477 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,477 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,482 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,482 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,482 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,482 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,483 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,483 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,483 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,483 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,484 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,484 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,484 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,484 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,484 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,486 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,487 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,489 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,489 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,489 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,489 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,499 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,500 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:05,507 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:54:05,565 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:54:05,573 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 [2021-10-07 14:54:05,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-07 14:54:05,596 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:54:05,609 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 295 transitions, 606 flow [2021-10-07 14:54:05,612 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 295 transitions, 606 flow [2021-10-07 14:54:05,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 295 transitions, 606 flow [2021-10-07 14:54:05,729 INFO L129 PetriNetUnfolder]: 26/293 cut-off events. [2021-10-07 14:54:05,729 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:54:05,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 293 events. 26/293 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 439 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2021-10-07 14:54:05,743 INFO L116 LiptonReduction]: Number of co-enabled transitions 1916 [2021-10-07 14:54:27,709 INFO L131 LiptonReduction]: Checked pairs total: 3741 [2021-10-07 14:54:27,710 INFO L133 LiptonReduction]: Total number of compositions: 351 [2021-10-07 14:54:27,721 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 56 transitions, 128 flow [2021-10-07 14:54:27,748 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 14:54:27,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:27,758 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 14:54:27,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1137, now seen corresponding path program 1 times [2021-10-07 14:54:27,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:27,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213345485] [2021-10-07 14:54:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:27,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:27,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:27,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213345485] [2021-10-07 14:54:27,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213345485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:27,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:27,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-07 14:54:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80944990] [2021-10-07 14:54:27,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 14:54:27,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 14:54:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 14:54:27,915 INFO L87 Difference]: Start difference. First operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:27,943 INFO L93 Difference]: Finished difference Result 225 states and 535 transitions. [2021-10-07 14:54:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 14:54:27,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 14:54:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:27,960 INFO L225 Difference]: With dead ends: 225 [2021-10-07 14:54:27,961 INFO L226 Difference]: Without dead ends: 225 [2021-10-07 14:54:27,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 14:54:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-07 14:54:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-10-07 14:54:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 189 states have (on average 2.8306878306878307) internal successors, (535), 224 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 535 transitions. [2021-10-07 14:54:28,025 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 535 transitions. Word has length 1 [2021-10-07 14:54:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:28,025 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 535 transitions. [2021-10-07 14:54:28,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 535 transitions. [2021-10-07 14:54:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:54:28,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:28,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:54:28,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:54:28,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 36380, now seen corresponding path program 1 times [2021-10-07 14:54:28,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:28,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808843568] [2021-10-07 14:54:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:28,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:28,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:28,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774211092] [2021-10-07 14:54:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:28,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:28,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:28,068 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) [2021-10-07 14:54:28,076 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 [2021-10-07 14:54:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:28,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:28,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:28,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808843568] [2021-10-07 14:54:28,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:28,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774211092] [2021-10-07 14:54:28,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774211092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:28,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:28,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:54:28,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535775462] [2021-10-07 14:54:28,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:28,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:28,236 INFO L87 Difference]: Start difference. First operand 225 states and 535 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) [2021-10-07 14:54:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:28,296 INFO L93 Difference]: Finished difference Result 222 states and 532 transitions. [2021-10-07 14:54:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:28,297 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 [2021-10-07 14:54:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:28,300 INFO L225 Difference]: With dead ends: 222 [2021-10-07 14:54:28,300 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 14:54:28,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 14:54:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-07 14:54:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 189 states have (on average 2.814814814814815) internal successors, (532), 221 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 532 transitions. [2021-10-07 14:54:28,344 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 532 transitions. Word has length 2 [2021-10-07 14:54:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:28,344 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 532 transitions. [2021-10-07 14:54:28,345 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) [2021-10-07 14:54:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 532 transitions. [2021-10-07 14:54:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:54:28,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:28,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:54:28,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:28,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:28,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash 36379, now seen corresponding path program 1 times [2021-10-07 14:54:28,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:28,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043618371] [2021-10-07 14:54:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:28,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:28,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:28,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94375724] [2021-10-07 14:54:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:28,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:28,562 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) [2021-10-07 14:54:28,575 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 [2021-10-07 14:54:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:28,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:28,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:28,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:28,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043618371] [2021-10-07 14:54:28,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:28,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94375724] [2021-10-07 14:54:28,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94375724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:28,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:28,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:54:28,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150853782] [2021-10-07 14:54:28,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:28,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:28,661 INFO L87 Difference]: Start difference. First operand 222 states and 532 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) [2021-10-07 14:54:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:28,765 INFO L93 Difference]: Finished difference Result 440 states and 1060 transitions. [2021-10-07 14:54:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:28,768 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 [2021-10-07 14:54:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:28,780 INFO L225 Difference]: With dead ends: 440 [2021-10-07 14:54:28,780 INFO L226 Difference]: Without dead ends: 440 [2021-10-07 14:54:28,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-07 14:54:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 225. [2021-10-07 14:54:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 2.8125) internal successors, (540), 224 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 540 transitions. [2021-10-07 14:54:28,844 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 540 transitions. Word has length 2 [2021-10-07 14:54:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:28,845 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 540 transitions. [2021-10-07 14:54:28,845 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) [2021-10-07 14:54:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 540 transitions. [2021-10-07 14:54:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:54:28,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:28,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:54:28,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:29,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:29,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1128850, now seen corresponding path program 1 times [2021-10-07 14:54:29,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:29,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419224463] [2021-10-07 14:54:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:29,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:29,077 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:29,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254919918] [2021-10-07 14:54:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:29,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:29,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:29,085 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) [2021-10-07 14:54:29,105 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 [2021-10-07 14:54:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:29,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:29,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:29,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:29,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419224463] [2021-10-07 14:54:29,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:29,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254919918] [2021-10-07 14:54:29,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254919918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:29,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:29,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:29,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662064735] [2021-10-07 14:54:29,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:29,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:29,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:29,218 INFO L87 Difference]: Start difference. First operand 225 states and 540 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) [2021-10-07 14:54:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:29,360 INFO L93 Difference]: Finished difference Result 658 states and 1588 transitions. [2021-10-07 14:54:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:29,361 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 [2021-10-07 14:54:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:29,368 INFO L225 Difference]: With dead ends: 658 [2021-10-07 14:54:29,368 INFO L226 Difference]: Without dead ends: 658 [2021-10-07 14:54:29,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-07 14:54:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 228. [2021-10-07 14:54:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 195 states have (on average 2.81025641025641) internal successors, (548), 227 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 548 transitions. [2021-10-07 14:54:29,394 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 548 transitions. Word has length 3 [2021-10-07 14:54:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:29,394 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 548 transitions. [2021-10-07 14:54:29,395 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) [2021-10-07 14:54:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 548 transitions. [2021-10-07 14:54:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:54:29,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:29,395 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:54:29,426 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 [2021-10-07 14:54:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:29,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash 34995451, now seen corresponding path program 2 times [2021-10-07 14:54:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:29,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419839175] [2021-10-07 14:54:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:29,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:29,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:29,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112436352] [2021-10-07 14:54:29,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:29,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:29,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:29,621 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) [2021-10-07 14:54:29,653 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 [2021-10-07 14:54:29,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:29,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:29,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 14:54:29,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:54:29,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:29,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419839175] [2021-10-07 14:54:29,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:29,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112436352] [2021-10-07 14:54:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112436352] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:29,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:54:29,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678224775] [2021-10-07 14:54:29,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:29,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:29,844 INFO L87 Difference]: Start difference. First operand 228 states and 548 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) [2021-10-07 14:54:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:29,929 INFO L93 Difference]: Finished difference Result 227 states and 547 transitions. [2021-10-07 14:54:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:29,930 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 [2021-10-07 14:54:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:29,933 INFO L225 Difference]: With dead ends: 227 [2021-10-07 14:54:29,933 INFO L226 Difference]: Without dead ends: 227 [2021-10-07 14:54:29,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-07 14:54:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2021-10-07 14:54:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 193 states have (on average 2.8134715025906734) internal successors, (543), 224 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 543 transitions. [2021-10-07 14:54:29,946 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 543 transitions. Word has length 4 [2021-10-07 14:54:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:29,947 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 543 transitions. [2021-10-07 14:54:29,947 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) [2021-10-07 14:54:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 543 transitions. [2021-10-07 14:54:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:54:29,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:29,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:54:29,986 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 [2021-10-07 14:54:30,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:30,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1086725139, now seen corresponding path program 1 times [2021-10-07 14:54:30,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:30,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850725256] [2021-10-07 14:54:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:30,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:30,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369549572] [2021-10-07 14:54:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:30,177 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) [2021-10-07 14:54:30,193 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 [2021-10-07 14:54:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:30,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:30,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:30,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:30,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850725256] [2021-10-07 14:54:30,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:30,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369549572] [2021-10-07 14:54:30,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369549572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:30,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:30,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:30,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853851131] [2021-10-07 14:54:30,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:30,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:30,288 INFO L87 Difference]: Start difference. First operand 225 states and 543 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:30,322 INFO L93 Difference]: Finished difference Result 442 states and 1073 transitions. [2021-10-07 14:54:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:54:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:30,327 INFO L225 Difference]: With dead ends: 442 [2021-10-07 14:54:30,327 INFO L226 Difference]: Without dead ends: 442 [2021-10-07 14:54:30,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-07 14:54:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 229. [2021-10-07 14:54:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 197 states have (on average 2.817258883248731) internal successors, (555), 228 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 555 transitions. [2021-10-07 14:54:30,341 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 555 transitions. Word has length 5 [2021-10-07 14:54:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:30,341 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 555 transitions. [2021-10-07 14:54:30,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 555 transitions. [2021-10-07 14:54:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:54:30,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:30,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:54:30,382 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 [2021-10-07 14:54:30,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1086725140, now seen corresponding path program 1 times [2021-10-07 14:54:30,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:30,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619117131] [2021-10-07 14:54:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:30,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:30,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113496005] [2021-10-07 14:54:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:30,567 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) [2021-10-07 14:54:30,572 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 [2021-10-07 14:54:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:30,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:30,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:30,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619117131] [2021-10-07 14:54:30,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:30,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113496005] [2021-10-07 14:54:30,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113496005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:30,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:30,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:30,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366562708] [2021-10-07 14:54:30,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:30,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:30,652 INFO L87 Difference]: Start difference. First operand 229 states and 555 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:30,672 INFO L93 Difference]: Finished difference Result 228 states and 549 transitions. [2021-10-07 14:54:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:54:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:30,675 INFO L225 Difference]: With dead ends: 228 [2021-10-07 14:54:30,676 INFO L226 Difference]: Without dead ends: 228 [2021-10-07 14:54:30,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-07 14:54:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-07 14:54:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 197 states have (on average 2.786802030456853) internal successors, (549), 227 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 549 transitions. [2021-10-07 14:54:30,685 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 549 transitions. Word has length 5 [2021-10-07 14:54:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:30,685 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 549 transitions. [2021-10-07 14:54:30,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 549 transitions. [2021-10-07 14:54:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:54:30,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:30,686 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 14:54:30,721 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 [2021-10-07 14:54:30,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:30,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1086755762, now seen corresponding path program 1 times [2021-10-07 14:54:30,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:30,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391939772] [2021-10-07 14:54:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:30,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:30,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617912496] [2021-10-07 14:54:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:30,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:30,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:30,914 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) [2021-10-07 14:54:30,917 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 [2021-10-07 14:54:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:30,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:54:30,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:31,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:31,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391939772] [2021-10-07 14:54:31,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:31,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617912496] [2021-10-07 14:54:31,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617912496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:31,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:31,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:54:31,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566459016] [2021-10-07 14:54:31,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:31,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:31,031 INFO L87 Difference]: Start difference. First operand 228 states and 549 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) [2021-10-07 14:54:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:31,118 INFO L93 Difference]: Finished difference Result 658 states and 1596 transitions. [2021-10-07 14:54:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:31,119 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 [2021-10-07 14:54:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:31,124 INFO L225 Difference]: With dead ends: 658 [2021-10-07 14:54:31,125 INFO L226 Difference]: Without dead ends: 658 [2021-10-07 14:54:31,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-07 14:54:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 230. [2021-10-07 14:54:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 229 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 552 transitions. [2021-10-07 14:54:31,141 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 552 transitions. Word has length 5 [2021-10-07 14:54:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:31,141 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 552 transitions. [2021-10-07 14:54:31,141 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) [2021-10-07 14:54:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 552 transitions. [2021-10-07 14:54:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:54:31,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:31,142 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-07 14:54:31,186 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 [2021-10-07 14:54:31,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:31,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:31,356 INFO L82 PathProgramCache]: Analyzing trace with hash -727179045, now seen corresponding path program 1 times [2021-10-07 14:54:31,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:31,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094164156] [2021-10-07 14:54:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:31,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:31,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:31,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405921402] [2021-10-07 14:54:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:31,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:31,367 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) [2021-10-07 14:54:31,385 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 [2021-10-07 14:54:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:31,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:54:31,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:31,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:31,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094164156] [2021-10-07 14:54:31,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:31,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405921402] [2021-10-07 14:54:31,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405921402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:31,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:31,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-07 14:54:31,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924440273] [2021-10-07 14:54:31,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:54:31,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:54:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:54:31,522 INFO L87 Difference]: Start difference. First operand 230 states and 552 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:31,657 INFO L93 Difference]: Finished difference Result 1085 states and 2637 transitions. [2021-10-07 14:54:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:54:31,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:54:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:31,669 INFO L225 Difference]: With dead ends: 1085 [2021-10-07 14:54:31,670 INFO L226 Difference]: Without dead ends: 1085 [2021-10-07 14:54:31,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:54:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-10-07 14:54:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 232. [2021-10-07 14:54:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 201 states have (on average 2.7661691542288556) internal successors, (556), 231 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 556 transitions. [2021-10-07 14:54:31,691 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 556 transitions. Word has length 6 [2021-10-07 14:54:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:31,691 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 556 transitions. [2021-10-07 14:54:31,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 556 transitions. [2021-10-07 14:54:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:31,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:31,692 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-07 14:54:31,734 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 [2021-10-07 14:54:31,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:31,907 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1124583214, now seen corresponding path program 2 times [2021-10-07 14:54:31,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:31,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953931272] [2021-10-07 14:54:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:31,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:31,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:31,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869541697] [2021-10-07 14:54:31,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:31,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:31,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:31,919 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) [2021-10-07 14:54:31,931 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 [2021-10-07 14:54:31,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:31,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:31,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 14:54:31,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:54:32,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953931272] [2021-10-07 14:54:32,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869541697] [2021-10-07 14:54:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869541697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:32,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:32,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:32,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533768090] [2021-10-07 14:54:32,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:32,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:32,273 INFO L87 Difference]: Start difference. First operand 232 states and 556 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) [2021-10-07 14:54:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:32,395 INFO L93 Difference]: Finished difference Result 443 states and 1073 transitions. [2021-10-07 14:54:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:32,396 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 [2021-10-07 14:54:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:32,400 INFO L225 Difference]: With dead ends: 443 [2021-10-07 14:54:32,400 INFO L226 Difference]: Without dead ends: 443 [2021-10-07 14:54:32,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-07 14:54:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 229. [2021-10-07 14:54:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 199 states have (on average 2.7688442211055277) internal successors, (551), 228 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 551 transitions. [2021-10-07 14:54:32,412 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 551 transitions. Word has length 7 [2021-10-07 14:54:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:32,412 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 551 transitions. [2021-10-07 14:54:32,412 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) [2021-10-07 14:54:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 551 transitions. [2021-10-07 14:54:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:32,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:32,413 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-07 14:54:32,467 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 [2021-10-07 14:54:32,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:32,627 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:32,628 INFO L82 PathProgramCache]: Analyzing trace with hash 665839678, now seen corresponding path program 1 times [2021-10-07 14:54:32,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:32,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148121291] [2021-10-07 14:54:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:32,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:32,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:32,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985521955] [2021-10-07 14:54:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:32,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:32,639 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) [2021-10-07 14:54:32,642 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 [2021-10-07 14:54:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:32,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:32,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148121291] [2021-10-07 14:54:32,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:32,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985521955] [2021-10-07 14:54:32,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985521955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:32,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:32,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-07 14:54:32,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090214221] [2021-10-07 14:54:32,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:32,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:32,748 INFO L87 Difference]: Start difference. First operand 229 states and 551 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:32,792 INFO L93 Difference]: Finished difference Result 659 states and 1596 transitions. [2021-10-07 14:54:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:54:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:32,799 INFO L225 Difference]: With dead ends: 659 [2021-10-07 14:54:32,800 INFO L226 Difference]: Without dead ends: 659 [2021-10-07 14:54:32,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-10-07 14:54:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 233. [2021-10-07 14:54:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 203 states have (on average 2.7586206896551726) internal successors, (560), 232 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 560 transitions. [2021-10-07 14:54:32,815 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 560 transitions. Word has length 7 [2021-10-07 14:54:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:32,815 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 560 transitions. [2021-10-07 14:54:32,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 560 transitions. [2021-10-07 14:54:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:32,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:32,816 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-07 14:54:32,857 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 [2021-10-07 14:54:33,029 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,SelfDestructingSolverStorable10 [2021-10-07 14:54:33,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 665857847, now seen corresponding path program 1 times [2021-10-07 14:54:33,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:33,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98478128] [2021-10-07 14:54:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:33,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:33,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:33,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882491535] [2021-10-07 14:54:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:33,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:33,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:33,041 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) [2021-10-07 14:54:33,044 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 [2021-10-07 14:54:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:33,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:54:33,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:33,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:33,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98478128] [2021-10-07 14:54:33,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:33,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882491535] [2021-10-07 14:54:33,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882491535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:33,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:33,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-07 14:54:33,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979705178] [2021-10-07 14:54:33,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:33,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:33,151 INFO L87 Difference]: Start difference. First operand 233 states and 560 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:33,254 INFO L93 Difference]: Finished difference Result 889 states and 2148 transitions. [2021-10-07 14:54:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:54:33,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:54:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:33,262 INFO L225 Difference]: With dead ends: 889 [2021-10-07 14:54:33,262 INFO L226 Difference]: Without dead ends: 889 [2021-10-07 14:54:33,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-10-07 14:54:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 236. [2021-10-07 14:54:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 206 states have (on average 2.7524271844660193) internal successors, (567), 235 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 567 transitions. [2021-10-07 14:54:33,278 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 567 transitions. Word has length 7 [2021-10-07 14:54:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:33,279 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 567 transitions. [2021-10-07 14:54:33,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 567 transitions. [2021-10-07 14:54:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:54:33,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:33,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:33,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:33,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:33,495 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash -967415884, now seen corresponding path program 1 times [2021-10-07 14:54:33,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:33,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593578563] [2021-10-07 14:54:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:33,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:33,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:33,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747366723] [2021-10-07 14:54:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:33,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:33,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:33,506 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) [2021-10-07 14:54:33,510 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 [2021-10-07 14:54:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:33,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:54:33,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:33,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:33,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593578563] [2021-10-07 14:54:33,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:33,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747366723] [2021-10-07 14:54:33,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747366723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:33,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:33,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:54:33,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302111256] [2021-10-07 14:54:33,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:33,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:33,635 INFO L87 Difference]: Start difference. First operand 236 states and 567 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:33,782 INFO L93 Difference]: Finished difference Result 502 states and 1131 transitions. [2021-10-07 14:54:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:54:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:54:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:33,787 INFO L225 Difference]: With dead ends: 502 [2021-10-07 14:54:33,787 INFO L226 Difference]: Without dead ends: 502 [2021-10-07 14:54:33,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-07 14:54:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 314. [2021-10-07 14:54:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 284 states have (on average 2.676056338028169) internal successors, (760), 313 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 760 transitions. [2021-10-07 14:54:33,802 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 760 transitions. Word has length 8 [2021-10-07 14:54:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:33,802 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 760 transitions. [2021-10-07 14:54:33,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 760 transitions. [2021-10-07 14:54:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:54:33,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:33,805 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-07 14:54:33,847 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 [2021-10-07 14:54:34,020 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,SelfDestructingSolverStorable12 [2021-10-07 14:54:34,021 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:34,022 INFO L82 PathProgramCache]: Analyzing trace with hash -833240751, now seen corresponding path program 2 times [2021-10-07 14:54:34,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:34,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383696745] [2021-10-07 14:54:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:34,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:34,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:34,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335493447] [2021-10-07 14:54:34,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:34,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:34,032 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) [2021-10-07 14:54:34,040 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 [2021-10-07 14:54:34,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:34,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:34,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:54:34,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:54:34,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:34,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383696745] [2021-10-07 14:54:34,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:34,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335493447] [2021-10-07 14:54:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335493447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:34,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251321956] [2021-10-07 14:54:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:34,137 INFO L87 Difference]: Start difference. First operand 314 states and 760 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:34,385 INFO L93 Difference]: Finished difference Result 586 states and 1425 transitions. [2021-10-07 14:54:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:54:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:34,390 INFO L225 Difference]: With dead ends: 586 [2021-10-07 14:54:34,391 INFO L226 Difference]: Without dead ends: 586 [2021-10-07 14:54:34,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-07 14:54:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 295. [2021-10-07 14:54:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 266 states have (on average 2.6766917293233083) internal successors, (712), 294 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 712 transitions. [2021-10-07 14:54:34,405 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 712 transitions. Word has length 8 [2021-10-07 14:54:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:34,406 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 712 transitions. [2021-10-07 14:54:34,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 712 transitions. [2021-10-07 14:54:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:54:34,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:34,407 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2021-10-07 14:54:34,447 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 [2021-10-07 14:54:34,615 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,SelfDestructingSolverStorable13 [2021-10-07 14:54:34,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:34,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:34,617 INFO L82 PathProgramCache]: Analyzing trace with hash -78162519, now seen corresponding path program 2 times [2021-10-07 14:54:34,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:34,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758893609] [2021-10-07 14:54:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:34,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:34,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:34,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380072617] [2021-10-07 14:54:34,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:34,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:34,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:34,627 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) [2021-10-07 14:54:34,642 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 [2021-10-07 14:54:34,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:34,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:34,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 14:54:34,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:34,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758893609] [2021-10-07 14:54:34,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:34,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380072617] [2021-10-07 14:54:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380072617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:34,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:34,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847167439] [2021-10-07 14:54:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:34,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:34,754 INFO L87 Difference]: Start difference. First operand 295 states and 712 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:34,815 INFO L93 Difference]: Finished difference Result 567 states and 1381 transitions. [2021-10-07 14:54:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:54:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:34,821 INFO L225 Difference]: With dead ends: 567 [2021-10-07 14:54:34,821 INFO L226 Difference]: Without dead ends: 567 [2021-10-07 14:54:34,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-07 14:54:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 286. [2021-10-07 14:54:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 258 states have (on average 2.689922480620155) internal successors, (694), 285 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 694 transitions. [2021-10-07 14:54:34,847 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 694 transitions. Word has length 9 [2021-10-07 14:54:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:34,847 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 694 transitions. [2021-10-07 14:54:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 694 transitions. [2021-10-07 14:54:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:54:34,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:34,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:34,900 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 [2021-10-07 14:54:35,067 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,SelfDestructingSolverStorable14 [2021-10-07 14:54:35,067 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:35,068 INFO L82 PathProgramCache]: Analyzing trace with hash -731051447, now seen corresponding path program 1 times [2021-10-07 14:54:35,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:35,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378893789] [2021-10-07 14:54:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:35,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:35,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147349396] [2021-10-07 14:54:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:35,077 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) [2021-10-07 14:54:35,078 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 [2021-10-07 14:54:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:35,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:54:35,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:35,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378893789] [2021-10-07 14:54:35,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:35,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147349396] [2021-10-07 14:54:35,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147349396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:35,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:35,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:35,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58658613] [2021-10-07 14:54:35,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:35,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:35,182 INFO L87 Difference]: Start difference. First operand 286 states and 694 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-07 14:54:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:35,215 INFO L93 Difference]: Finished difference Result 407 states and 1013 transitions. [2021-10-07 14:54:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:54:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:35,219 INFO L225 Difference]: With dead ends: 407 [2021-10-07 14:54:35,220 INFO L226 Difference]: Without dead ends: 407 [2021-10-07 14:54:35,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-10-07 14:54:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 346. [2021-10-07 14:54:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 318 states have (on average 2.849056603773585) internal successors, (906), 345 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 906 transitions. [2021-10-07 14:54:35,233 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 906 transitions. Word has length 10 [2021-10-07 14:54:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:35,234 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 906 transitions. [2021-10-07 14:54:35,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-07 14:54:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 906 transitions. [2021-10-07 14:54:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:54:35,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:35,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:35,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-07 14:54:35,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-07 14:54:35,450 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash -731051445, now seen corresponding path program 1 times [2021-10-07 14:54:35,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:35,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595461315] [2021-10-07 14:54:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:35,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:35,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266047641] [2021-10-07 14:54:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:35,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:35,461 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) [2021-10-07 14:54:35,466 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 [2021-10-07 14:54:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:35,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:54:35,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:35,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595461315] [2021-10-07 14:54:35,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:35,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266047641] [2021-10-07 14:54:35,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266047641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:35,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:35,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:35,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604934288] [2021-10-07 14:54:35,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:35,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:35,580 INFO L87 Difference]: Start difference. First operand 346 states and 906 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-07 14:54:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:35,592 INFO L93 Difference]: Finished difference Result 316 states and 800 transitions. [2021-10-07 14:54:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:35,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:54:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:35,596 INFO L225 Difference]: With dead ends: 316 [2021-10-07 14:54:35,596 INFO L226 Difference]: Without dead ends: 316 [2021-10-07 14:54:35,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-07 14:54:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-10-07 14:54:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 297 states have (on average 2.6936026936026938) internal successors, (800), 315 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 800 transitions. [2021-10-07 14:54:35,609 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 800 transitions. Word has length 10 [2021-10-07 14:54:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:35,610 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 800 transitions. [2021-10-07 14:54:35,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-10-07 14:54:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 800 transitions. [2021-10-07 14:54:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:54:35,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:35,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:35,655 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 [2021-10-07 14:54:35,827 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,SelfDestructingSolverStorable16 [2021-10-07 14:54:35,827 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1674315923, now seen corresponding path program 1 times [2021-10-07 14:54:35,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:35,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788297242] [2021-10-07 14:54:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:35,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:35,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997754933] [2021-10-07 14:54:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:35,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:35,837 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) [2021-10-07 14:54:35,858 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 [2021-10-07 14:54:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:35,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:35,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:35,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:35,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788297242] [2021-10-07 14:54:35,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:35,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997754933] [2021-10-07 14:54:35,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997754933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:35,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:35,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-07 14:54:35,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654854744] [2021-10-07 14:54:35,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:35,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:35,969 INFO L87 Difference]: Start difference. First operand 316 states and 800 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-07 14:54:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:36,045 INFO L93 Difference]: Finished difference Result 401 states and 982 transitions. [2021-10-07 14:54:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:54:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:54:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:36,049 INFO L225 Difference]: With dead ends: 401 [2021-10-07 14:54:36,049 INFO L226 Difference]: Without dead ends: 369 [2021-10-07 14:54:36,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-07 14:54:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2021-10-07 14:54:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 2.615606936416185) internal successors, (905), 364 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 905 transitions. [2021-10-07 14:54:36,063 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 905 transitions. Word has length 10 [2021-10-07 14:54:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:36,064 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 905 transitions. [2021-10-07 14:54:36,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-07 14:54:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 905 transitions. [2021-10-07 14:54:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:54:36,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:36,065 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:36,103 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 [2021-10-07 14:54:36,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 14:54:36,278 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1834272846, now seen corresponding path program 1 times [2021-10-07 14:54:36,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:36,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309169079] [2021-10-07 14:54:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:36,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:36,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:36,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855033193] [2021-10-07 14:54:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:36,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:36,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:36,289 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) [2021-10-07 14:54:36,308 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 [2021-10-07 14:54:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:54:36,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:36,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:36,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309169079] [2021-10-07 14:54:36,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:36,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855033193] [2021-10-07 14:54:36,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855033193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:36,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:36,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-07 14:54:36,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131286616] [2021-10-07 14:54:36,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:54:36,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:54:36,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:36,494 INFO L87 Difference]: Start difference. First operand 365 states and 905 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2021-10-07 14:54:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:36,641 INFO L93 Difference]: Finished difference Result 645 states and 1523 transitions. [2021-10-07 14:54:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:54:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 [2021-10-07 14:54:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:36,647 INFO L225 Difference]: With dead ends: 645 [2021-10-07 14:54:36,647 INFO L226 Difference]: Without dead ends: 612 [2021-10-07 14:54:36,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:54:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-10-07 14:54:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 460. [2021-10-07 14:54:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 441 states have (on average 2.6553287981859413) internal successors, (1171), 459 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1171 transitions. [2021-10-07 14:54:36,667 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1171 transitions. Word has length 12 [2021-10-07 14:54:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:36,667 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1171 transitions. [2021-10-07 14:54:36,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2021-10-07 14:54:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1171 transitions. [2021-10-07 14:54:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:54:36,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:36,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:36,708 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 [2021-10-07 14:54:36,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:36,878 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:36,878 INFO L82 PathProgramCache]: Analyzing trace with hash 82447906, now seen corresponding path program 1 times [2021-10-07 14:54:36,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:36,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369861686] [2021-10-07 14:54:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:36,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:36,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:36,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410699530] [2021-10-07 14:54:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:36,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:36,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:36,887 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) [2021-10-07 14:54:36,900 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 [2021-10-07 14:54:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:37,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:37,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:37,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:37,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369861686] [2021-10-07 14:54:37,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:37,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410699530] [2021-10-07 14:54:37,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410699530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:37,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:37,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:37,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456561526] [2021-10-07 14:54:37,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:37,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:37,030 INFO L87 Difference]: Start difference. First operand 460 states and 1171 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) [2021-10-07 14:54:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:37,074 INFO L93 Difference]: Finished difference Result 697 states and 1864 transitions. [2021-10-07 14:54:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:37,075 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 [2021-10-07 14:54:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:37,081 INFO L225 Difference]: With dead ends: 697 [2021-10-07 14:54:37,081 INFO L226 Difference]: Without dead ends: 697 [2021-10-07 14:54:37,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-07 14:54:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 538. [2021-10-07 14:54:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 519 states have (on average 3.0) internal successors, (1557), 537 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1557 transitions. [2021-10-07 14:54:37,104 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1557 transitions. Word has length 12 [2021-10-07 14:54:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:37,106 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1557 transitions. [2021-10-07 14:54:37,106 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) [2021-10-07 14:54:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1557 transitions. [2021-10-07 14:54:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:54:37,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:37,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:37,144 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 [2021-10-07 14:54:37,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:37,323 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash 82447907, now seen corresponding path program 1 times [2021-10-07 14:54:37,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:37,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823623098] [2021-10-07 14:54:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:37,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:37,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:37,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339246971] [2021-10-07 14:54:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:37,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:37,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:37,333 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) [2021-10-07 14:54:37,340 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 [2021-10-07 14:54:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:37,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:54:37,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:37,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:37,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823623098] [2021-10-07 14:54:37,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:37,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339246971] [2021-10-07 14:54:37,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339246971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:37,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:37,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:54:37,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143123479] [2021-10-07 14:54:37,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:37,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:37,491 INFO L87 Difference]: Start difference. First operand 538 states and 1557 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-10-07 14:54:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:37,709 INFO L93 Difference]: Finished difference Result 1027 states and 2789 transitions. [2021-10-07 14:54:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:54:37,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 [2021-10-07 14:54:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:37,718 INFO L225 Difference]: With dead ends: 1027 [2021-10-07 14:54:37,719 INFO L226 Difference]: Without dead ends: 967 [2021-10-07 14:54:37,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-10-07 14:54:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 652. [2021-10-07 14:54:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 633 states have (on average 2.9984202211690363) internal successors, (1898), 651 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1898 transitions. [2021-10-07 14:54:37,747 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1898 transitions. Word has length 12 [2021-10-07 14:54:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1898 transitions. [2021-10-07 14:54:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-10-07 14:54:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1898 transitions. [2021-10-07 14:54:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:54:37,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:37,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:37,787 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 [2021-10-07 14:54:37,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:37,963 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 82447803, now seen corresponding path program 1 times [2021-10-07 14:54:37,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:37,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767717272] [2021-10-07 14:54:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:37,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:37,971 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:37,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130964417] [2021-10-07 14:54:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:37,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:37,973 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) [2021-10-07 14:54:37,993 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 [2021-10-07 14:54:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:38,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:38,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767717272] [2021-10-07 14:54:38,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:38,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130964417] [2021-10-07 14:54:38,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130964417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:38,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:38,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:38,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226869523] [2021-10-07 14:54:38,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:38,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:38,120 INFO L87 Difference]: Start difference. First operand 652 states and 1898 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) [2021-10-07 14:54:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:38,160 INFO L93 Difference]: Finished difference Result 1081 states and 3252 transitions. [2021-10-07 14:54:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:38,161 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 [2021-10-07 14:54:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:38,171 INFO L225 Difference]: With dead ends: 1081 [2021-10-07 14:54:38,172 INFO L226 Difference]: Without dead ends: 1081 [2021-10-07 14:54:38,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-10-07 14:54:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2021-10-07 14:54:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 867 states have (on average 3.3886966551326414) internal successors, (2938), 885 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2938 transitions. [2021-10-07 14:54:38,208 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2938 transitions. Word has length 12 [2021-10-07 14:54:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:38,208 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2938 transitions. [2021-10-07 14:54:38,208 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) [2021-10-07 14:54:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2938 transitions. [2021-10-07 14:54:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:54:38,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:38,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:38,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:38,422 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,SelfDestructingSolverStorable21 [2021-10-07 14:54:38,423 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:38,424 INFO L82 PathProgramCache]: Analyzing trace with hash 82447804, now seen corresponding path program 1 times [2021-10-07 14:54:38,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:38,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668989116] [2021-10-07 14:54:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:38,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:38,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:38,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507177915] [2021-10-07 14:54:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:38,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:38,434 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) [2021-10-07 14:54:38,449 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 [2021-10-07 14:54:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:38,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:38,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:38,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:38,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668989116] [2021-10-07 14:54:38,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:38,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507177915] [2021-10-07 14:54:38,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507177915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:38,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:38,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:38,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194195985] [2021-10-07 14:54:38,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:38,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:38,582 INFO L87 Difference]: Start difference. First operand 886 states and 2938 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) [2021-10-07 14:54:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:38,609 INFO L93 Difference]: Finished difference Result 860 states and 2740 transitions. [2021-10-07 14:54:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:38,609 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 [2021-10-07 14:54:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:38,618 INFO L225 Difference]: With dead ends: 860 [2021-10-07 14:54:38,618 INFO L226 Difference]: Without dead ends: 860 [2021-10-07 14:54:38,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-10-07 14:54:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2021-10-07 14:54:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 843 states have (on average 3.250296559905101) internal successors, (2740), 859 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2740 transitions. [2021-10-07 14:54:38,652 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2740 transitions. Word has length 12 [2021-10-07 14:54:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2740 transitions. [2021-10-07 14:54:38,652 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) [2021-10-07 14:54:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2740 transitions. [2021-10-07 14:54:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:54:38,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:38,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:38,691 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 [2021-10-07 14:54:38,867 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,SelfDestructingSolverStorable22 [2021-10-07 14:54:38,868 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:38,869 INFO L82 PathProgramCache]: Analyzing trace with hash 223198281, now seen corresponding path program 1 times [2021-10-07 14:54:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:38,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727281001] [2021-10-07 14:54:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:38,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:38,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:38,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033239094] [2021-10-07 14:54:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:38,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:38,878 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) [2021-10-07 14:54:38,891 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 [2021-10-07 14:54:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:38,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:39,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:54:39,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:39,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727281001] [2021-10-07 14:54:39,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:39,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033239094] [2021-10-07 14:54:39,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033239094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:39,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:39,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:39,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442010860] [2021-10-07 14:54:39,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:39,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:39,026 INFO L87 Difference]: Start difference. First operand 860 states and 2740 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-10-07 14:54:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:39,076 INFO L93 Difference]: Finished difference Result 847 states and 2510 transitions. [2021-10-07 14:54:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 13 [2021-10-07 14:54:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:39,083 INFO L225 Difference]: With dead ends: 847 [2021-10-07 14:54:39,083 INFO L226 Difference]: Without dead ends: 847 [2021-10-07 14:54:39,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-10-07 14:54:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 808. [2021-10-07 14:54:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 795 states have (on average 3.079245283018868) internal successors, (2448), 807 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2448 transitions. [2021-10-07 14:54:39,111 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2448 transitions. Word has length 13 [2021-10-07 14:54:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:39,111 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2448 transitions. [2021-10-07 14:54:39,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-10-07 14:54:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2448 transitions. [2021-10-07 14:54:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:54:39,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:39,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:39,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:39,328 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:39,328 INFO L82 PathProgramCache]: Analyzing trace with hash 223198174, now seen corresponding path program 1 times [2021-10-07 14:54:39,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:39,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073854978] [2021-10-07 14:54:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:39,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:39,337 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:39,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009676832] [2021-10-07 14:54:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:39,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:39,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:39,339 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) [2021-10-07 14:54:39,354 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 [2021-10-07 14:54:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:39,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:39,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:54:39,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:39,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073854978] [2021-10-07 14:54:39,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:39,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009676832] [2021-10-07 14:54:39,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009676832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:39,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:39,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:39,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914199032] [2021-10-07 14:54:39,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:39,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:39,511 INFO L87 Difference]: Start difference. First operand 808 states and 2448 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-10-07 14:54:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:39,542 INFO L93 Difference]: Finished difference Result 899 states and 2490 transitions. [2021-10-07 14:54:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 13 [2021-10-07 14:54:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:39,560 INFO L225 Difference]: With dead ends: 899 [2021-10-07 14:54:39,561 INFO L226 Difference]: Without dead ends: 899 [2021-10-07 14:54:39,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-10-07 14:54:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 808. [2021-10-07 14:54:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 795 states have (on average 2.9484276729559746) internal successors, (2344), 807 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2344 transitions. [2021-10-07 14:54:39,593 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2344 transitions. Word has length 13 [2021-10-07 14:54:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:39,595 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2344 transitions. [2021-10-07 14:54:39,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-10-07 14:54:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2344 transitions. [2021-10-07 14:54:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:54:39,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:39,597 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:39,635 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 [2021-10-07 14:54:39,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-07 14:54:39,812 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:39,812 INFO L82 PathProgramCache]: Analyzing trace with hash -843207847, now seen corresponding path program 2 times [2021-10-07 14:54:39,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:39,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709545340] [2021-10-07 14:54:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:39,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:39,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:39,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461177784] [2021-10-07 14:54:39,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:39,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:39,821 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) [2021-10-07 14:54:39,822 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 [2021-10-07 14:54:39,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:39,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:39,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:54:39,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:41,799 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:54:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2021-10-07 14:54:41,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:41,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709545340] [2021-10-07 14:54:41,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:41,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461177784] [2021-10-07 14:54:41,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461177784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:41,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:41,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:41,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831609146] [2021-10-07 14:54:41,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:41,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:41,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2021-10-07 14:54:41,802 INFO L87 Difference]: Start difference. First operand 808 states and 2344 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2021-10-07 14:54:43,821 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:54:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:46,429 INFO L93 Difference]: Finished difference Result 1205 states and 3460 transitions. [2021-10-07 14:54:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 14 [2021-10-07 14:54:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:46,441 INFO L225 Difference]: With dead ends: 1205 [2021-10-07 14:54:46,441 INFO L226 Difference]: Without dead ends: 1200 [2021-10-07 14:54:46,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3628.6ms TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=2, NotChecked=6, Total=20 [2021-10-07 14:54:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-10-07 14:54:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 971. [2021-10-07 14:54:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 958 states have (on average 3.008350730688935) internal successors, (2882), 970 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2882 transitions. [2021-10-07 14:54:46,475 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2882 transitions. Word has length 14 [2021-10-07 14:54:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:46,476 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2882 transitions. [2021-10-07 14:54:46,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2021-10-07 14:54:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2882 transitions. [2021-10-07 14:54:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:54:46,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:46,477 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:46,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-07 14:54:46,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:46,678 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:46,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1923038389, now seen corresponding path program 1 times [2021-10-07 14:54:46,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:46,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436330258] [2021-10-07 14:54:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:46,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:46,687 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:46,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754952539] [2021-10-07 14:54:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:46,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:46,688 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) [2021-10-07 14:54:46,704 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 [2021-10-07 14:54:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:54:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:46,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:46,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436330258] [2021-10-07 14:54:46,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:46,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754952539] [2021-10-07 14:54:46,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754952539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:46,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:46,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-07 14:54:46,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792182261] [2021-10-07 14:54:46,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:54:46,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:54:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:46,894 INFO L87 Difference]: Start difference. First operand 971 states and 2882 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-10-07 14:54:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:47,064 INFO L93 Difference]: Finished difference Result 1623 states and 4564 transitions. [2021-10-07 14:54:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:54:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 14 [2021-10-07 14:54:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:47,075 INFO L225 Difference]: With dead ends: 1623 [2021-10-07 14:54:47,075 INFO L226 Difference]: Without dead ends: 1503 [2021-10-07 14:54:47,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:54:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-10-07 14:54:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1337. [2021-10-07 14:54:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1324 states have (on average 2.974320241691843) internal successors, (3938), 1336 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3938 transitions. [2021-10-07 14:54:47,124 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3938 transitions. Word has length 14 [2021-10-07 14:54:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:47,125 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3938 transitions. [2021-10-07 14:54:47,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-10-07 14:54:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3938 transitions. [2021-10-07 14:54:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:54:47,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:47,126 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:47,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:47,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-07 14:54:47,342 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -370496363, now seen corresponding path program 1 times [2021-10-07 14:54:47,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:47,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550741092] [2021-10-07 14:54:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:47,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:47,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:47,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276053934] [2021-10-07 14:54:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:47,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:47,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:47,351 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) [2021-10-07 14:54:47,353 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 [2021-10-07 14:54:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:47,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:47,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:54:47,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:47,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550741092] [2021-10-07 14:54:47,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:47,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276053934] [2021-10-07 14:54:47,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276053934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:47,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:47,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-07 14:54:47,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342095187] [2021-10-07 14:54:47,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:47,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:47,524 INFO L87 Difference]: Start difference. First operand 1337 states and 3938 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) [2021-10-07 14:54:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:47,556 INFO L93 Difference]: Finished difference Result 2061 states and 5903 transitions. [2021-10-07 14:54:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:47,557 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 15 [2021-10-07 14:54:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:47,567 INFO L225 Difference]: With dead ends: 2061 [2021-10-07 14:54:47,568 INFO L226 Difference]: Without dead ends: 2061 [2021-10-07 14:54:47,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-10-07 14:54:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1673. [2021-10-07 14:54:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1660 states have (on average 3.0487951807228915) internal successors, (5061), 1672 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 5061 transitions. [2021-10-07 14:54:47,624 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 5061 transitions. Word has length 15 [2021-10-07 14:54:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:47,624 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 5061 transitions. [2021-10-07 14:54:47,624 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) [2021-10-07 14:54:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 5061 transitions. [2021-10-07 14:54:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:54:47,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:47,626 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:47,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-07 14:54:47,840 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,SelfDestructingSolverStorable27 [2021-10-07 14:54:47,841 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -800001814, now seen corresponding path program 2 times [2021-10-07 14:54:47,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:47,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434865275] [2021-10-07 14:54:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:47,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:47,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:47,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854514260] [2021-10-07 14:54:47,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:47,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:47,850 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) [2021-10-07 14:54:47,862 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 [2021-10-07 14:54:47,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:47,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:47,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:54:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 14:54:48,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:48,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434865275] [2021-10-07 14:54:48,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:48,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854514260] [2021-10-07 14:54:48,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854514260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:48,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:48,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866807201] [2021-10-07 14:54:48,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:48,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:48,043 INFO L87 Difference]: Start difference. First operand 1673 states and 5061 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:54:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:48,098 INFO L93 Difference]: Finished difference Result 1719 states and 5032 transitions. [2021-10-07 14:54:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:48,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 16 [2021-10-07 14:54:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:48,107 INFO L225 Difference]: With dead ends: 1719 [2021-10-07 14:54:48,107 INFO L226 Difference]: Without dead ends: 1629 [2021-10-07 14:54:48,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-10-07 14:54:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1495. [2021-10-07 14:54:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1484 states have (on average 3.004043126684636) internal successors, (4458), 1494 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 4458 transitions. [2021-10-07 14:54:48,186 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 4458 transitions. Word has length 16 [2021-10-07 14:54:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:48,186 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 4458 transitions. [2021-10-07 14:54:48,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:54:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 4458 transitions. [2021-10-07 14:54:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:54:48,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:48,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:48,228 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 [2021-10-07 14:54:48,398 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,SelfDestructingSolverStorable28 [2021-10-07 14:54:48,399 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:48,400 INFO L82 PathProgramCache]: Analyzing trace with hash 688409756, now seen corresponding path program 1 times [2021-10-07 14:54:48,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:48,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991247298] [2021-10-07 14:54:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:48,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:48,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:48,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488342323] [2021-10-07 14:54:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:48,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:48,409 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) [2021-10-07 14:54:48,412 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 [2021-10-07 14:54:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:48,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:54:48,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:48,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:48,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991247298] [2021-10-07 14:54:48,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:48,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488342323] [2021-10-07 14:54:48,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488342323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:48,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:48,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-07 14:54:48,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470450571] [2021-10-07 14:54:48,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:54:48,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:54:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:54:48,650 INFO L87 Difference]: Start difference. First operand 1495 states and 4458 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-10-07 14:54:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:48,945 INFO L93 Difference]: Finished difference Result 3671 states and 10388 transitions. [2021-10-07 14:54:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:54:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 [2021-10-07 14:54:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:48,967 INFO L225 Difference]: With dead ends: 3671 [2021-10-07 14:54:48,967 INFO L226 Difference]: Without dead ends: 3465 [2021-10-07 14:54:48,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:54:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2021-10-07 14:54:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2019. [2021-10-07 14:54:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2008 states have (on average 3.0154382470119523) internal successors, (6055), 2018 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6055 transitions. [2021-10-07 14:54:49,074 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6055 transitions. Word has length 16 [2021-10-07 14:54:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:49,075 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 6055 transitions. [2021-10-07 14:54:49,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-10-07 14:54:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6055 transitions. [2021-10-07 14:54:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:54:49,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:49,076 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:49,114 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 [2021-10-07 14:54:49,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:49,291 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash 435357594, now seen corresponding path program 2 times [2021-10-07 14:54:49,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:49,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921830193] [2021-10-07 14:54:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:49,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:49,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:49,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605446071] [2021-10-07 14:54:49,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:49,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:49,302 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) [2021-10-07 14:54:49,306 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 [2021-10-07 14:54:49,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:54:49,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:49,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:54:49,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:50,992 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:54:53,283 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:54:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-07 14:54:53,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:53,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921830193] [2021-10-07 14:54:53,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:53,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605446071] [2021-10-07 14:54:53,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605446071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:53,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:53,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:53,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409327785] [2021-10-07 14:54:53,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:53,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:53,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:54:53,287 INFO L87 Difference]: Start difference. First operand 2019 states and 6055 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-07 14:54:55,295 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:54:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:55,306 INFO L93 Difference]: Finished difference Result 2021 states and 6059 transitions. [2021-10-07 14:54:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17 [2021-10-07 14:54:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:55,315 INFO L225 Difference]: With dead ends: 2021 [2021-10-07 14:54:55,315 INFO L226 Difference]: Without dead ends: 2021 [2021-10-07 14:54:55,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5535.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:54:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-10-07 14:54:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2020. [2021-10-07 14:54:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2009 states have (on average 3.0149328023892483) internal successors, (6057), 2019 states have internal predecessors, (6057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 6057 transitions. [2021-10-07 14:54:55,386 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 6057 transitions. Word has length 17 [2021-10-07 14:54:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:55,386 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 6057 transitions. [2021-10-07 14:54:55,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-07 14:54:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 6057 transitions. [2021-10-07 14:54:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:54:55,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:55,388 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:55,432 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 [2021-10-07 14:54:55,602 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,SelfDestructingSolverStorable30 [2021-10-07 14:54:55,603 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:54:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1261128774, now seen corresponding path program 3 times [2021-10-07 14:54:55,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:55,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978840122] [2021-10-07 14:54:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:55,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:55,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:54:55,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729784580] [2021-10-07 14:54:55,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:54:55,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:55,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:55,612 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) [2021-10-07 14:54:55,622 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 [2021-10-07 14:54:55,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:54:55,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:55,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:54:55,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:57,320 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:54:59,140 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:54:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-07 14:54:59,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:59,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978840122] [2021-10-07 14:54:59,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:54:59,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729784580] [2021-10-07 14:54:59,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729784580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:59,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:54:59,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:54:59,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672968551] [2021-10-07 14:54:59,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:59,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:54:59,164 INFO L87 Difference]: Start difference. First operand 2020 states and 6057 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-07 14:55:01,171 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:01,182 INFO L93 Difference]: Finished difference Result 2020 states and 6057 transitions. [2021-10-07 14:55:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:01,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17 [2021-10-07 14:55:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:01,191 INFO L225 Difference]: With dead ends: 2020 [2021-10-07 14:55:01,192 INFO L226 Difference]: Without dead ends: 2020 [2021-10-07 14:55:01,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5125.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-10-07 14:55:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2018. [2021-10-07 14:55:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2007 states have (on average 3.0159441953163926) internal successors, (6053), 2017 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 6053 transitions. [2021-10-07 14:55:01,258 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 6053 transitions. Word has length 17 [2021-10-07 14:55:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:01,259 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 6053 transitions. [2021-10-07 14:55:01,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-07 14:55:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 6053 transitions. [2021-10-07 14:55:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:55:01,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:01,261 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:01,304 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 [2021-10-07 14:55:01,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:01,474 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:01,475 INFO L82 PathProgramCache]: Analyzing trace with hash -570656830, now seen corresponding path program 2 times [2021-10-07 14:55:01,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:01,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152048779] [2021-10-07 14:55:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:01,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:01,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:01,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820108849] [2021-10-07 14:55:01,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:01,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:01,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:01,485 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) [2021-10-07 14:55:01,502 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 [2021-10-07 14:55:01,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:01,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:01,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 14:55:01,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:01,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152048779] [2021-10-07 14:55:01,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:01,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820108849] [2021-10-07 14:55:01,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820108849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:01,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:01,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:55:01,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769789221] [2021-10-07 14:55:01,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:01,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:01,714 INFO L87 Difference]: Start difference. First operand 2018 states and 6053 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:55:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:01,860 INFO L93 Difference]: Finished difference Result 2308 states and 6669 transitions. [2021-10-07 14:55:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:01,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 17 [2021-10-07 14:55:01,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:01,870 INFO L225 Difference]: With dead ends: 2308 [2021-10-07 14:55:01,870 INFO L226 Difference]: Without dead ends: 2308 [2021-10-07 14:55:01,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2021-10-07 14:55:01,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2018. [2021-10-07 14:55:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2007 states have (on average 2.976083707025411) internal successors, (5973), 2017 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 5973 transitions. [2021-10-07 14:55:01,939 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 5973 transitions. Word has length 17 [2021-10-07 14:55:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:01,940 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 5973 transitions. [2021-10-07 14:55:01,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:55:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 5973 transitions. [2021-10-07 14:55:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 14:55:01,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:01,942 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:01,984 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 [2021-10-07 14:55:02,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:02,156 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1186856473, now seen corresponding path program 1 times [2021-10-07 14:55:02,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:02,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465262122] [2021-10-07 14:55:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:02,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:02,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:02,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643137694] [2021-10-07 14:55:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:02,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:02,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:02,195 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) [2021-10-07 14:55:02,209 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 [2021-10-07 14:55:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:02,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:55:02,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:02,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:02,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465262122] [2021-10-07 14:55:02,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:02,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643137694] [2021-10-07 14:55:02,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643137694] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:02,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:02,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-07 14:55:02,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136854545] [2021-10-07 14:55:02,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:55:02,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:55:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:55:02,499 INFO L87 Difference]: Start difference. First operand 2018 states and 5973 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) 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) [2021-10-07 14:55:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:02,717 INFO L93 Difference]: Finished difference Result 3762 states and 10588 transitions. [2021-10-07 14:55:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) 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 18 [2021-10-07 14:55:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:02,732 INFO L225 Difference]: With dead ends: 3762 [2021-10-07 14:55:02,732 INFO L226 Difference]: Without dead ends: 3346 [2021-10-07 14:55:02,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:55:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2021-10-07 14:55:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 2273. [2021-10-07 14:55:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2262 states have (on average 2.9792219274977896) internal successors, (6739), 2272 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6739 transitions. [2021-10-07 14:55:02,818 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6739 transitions. Word has length 18 [2021-10-07 14:55:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:02,818 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6739 transitions. [2021-10-07 14:55:02,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) 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) [2021-10-07 14:55:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6739 transitions. [2021-10-07 14:55:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 14:55:02,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:02,820 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:02,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-07 14:55:03,035 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,SelfDestructingSolverStorable33 [2021-10-07 14:55:03,036 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 853935453, now seen corresponding path program 1 times [2021-10-07 14:55:03,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:03,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144219194] [2021-10-07 14:55:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:03,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591139313] [2021-10-07 14:55:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:03,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:03,046 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) [2021-10-07 14:55:03,062 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 [2021-10-07 14:55:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:03,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:55:03,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 14:55:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:03,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144219194] [2021-10-07 14:55:03,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:03,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591139313] [2021-10-07 14:55:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591139313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:03,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:03,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-07 14:55:03,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904534782] [2021-10-07 14:55:03,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:03,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:03,301 INFO L87 Difference]: Start difference. First operand 2273 states and 6739 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-07 14:55:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:03,578 INFO L93 Difference]: Finished difference Result 2574 states and 7130 transitions. [2021-10-07 14:55:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:03,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 18 [2021-10-07 14:55:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:03,587 INFO L225 Difference]: With dead ends: 2574 [2021-10-07 14:55:03,588 INFO L226 Difference]: Without dead ends: 2567 [2021-10-07 14:55:03,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:55:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-10-07 14:55:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2367. [2021-10-07 14:55:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2355 states have (on average 2.8552016985138002) internal successors, (6724), 2366 states have internal predecessors, (6724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 6724 transitions. [2021-10-07 14:55:03,683 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 6724 transitions. Word has length 18 [2021-10-07 14:55:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:03,683 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 6724 transitions. [2021-10-07 14:55:03,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-07 14:55:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6724 transitions. [2021-10-07 14:55:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 14:55:03,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:03,687 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:03,728 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 [2021-10-07 14:55:03,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-07 14:55:03,900 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1354529981, now seen corresponding path program 1 times [2021-10-07 14:55:03,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:03,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499909016] [2021-10-07 14:55:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:03,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062721732] [2021-10-07 14:55:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:03,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:03,912 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) [2021-10-07 14:55:03,916 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 [2021-10-07 14:55:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:04,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:55:04,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 14:55:04,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:04,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499909016] [2021-10-07 14:55:04,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:04,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062721732] [2021-10-07 14:55:04,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062721732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:04,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:04,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-07 14:55:04,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700945324] [2021-10-07 14:55:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:04,140 INFO L87 Difference]: Start difference. First operand 2367 states and 6724 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-10-07 14:55:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:04,233 INFO L93 Difference]: Finished difference Result 3222 states and 9062 transitions. [2021-10-07 14:55:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:04,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 19 [2021-10-07 14:55:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:04,244 INFO L225 Difference]: With dead ends: 3222 [2021-10-07 14:55:04,244 INFO L226 Difference]: Without dead ends: 3222 [2021-10-07 14:55:04,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-10-07 14:55:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2781. [2021-10-07 14:55:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2769 states have (on average 2.930299747201156) internal successors, (8114), 2780 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 8114 transitions. [2021-10-07 14:55:04,330 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 8114 transitions. Word has length 19 [2021-10-07 14:55:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:04,331 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 8114 transitions. [2021-10-07 14:55:04,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-10-07 14:55:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 8114 transitions. [2021-10-07 14:55:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 14:55:04,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:04,334 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:04,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-07 14:55:04,549 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,SelfDestructingSolverStorable35 [2021-10-07 14:55:04,550 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash 571016110, now seen corresponding path program 2 times [2021-10-07 14:55:04,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:04,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960527366] [2021-10-07 14:55:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:04,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:04,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:04,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549953038] [2021-10-07 14:55:04,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:04,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:04,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:04,572 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) [2021-10-07 14:55:04,588 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 [2021-10-07 14:55:04,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:04,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:04,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:06,383 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:08,230 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-07 14:55:08,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:08,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960527366] [2021-10-07 14:55:08,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:08,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549953038] [2021-10-07 14:55:08,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549953038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:08,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:08,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:08,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836027634] [2021-10-07 14:55:08,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:08,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:08,232 INFO L87 Difference]: Start difference. First operand 2781 states and 8114 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:10,240 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:10,254 INFO L93 Difference]: Finished difference Result 2785 states and 8124 transitions. [2021-10-07 14:55:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:10,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 20 [2021-10-07 14:55:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:10,260 INFO L225 Difference]: With dead ends: 2785 [2021-10-07 14:55:10,260 INFO L226 Difference]: Without dead ends: 2785 [2021-10-07 14:55:10,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5179.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-10-07 14:55:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2782. [2021-10-07 14:55:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2770 states have (on average 2.9303249097472923) internal successors, (8117), 2781 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 8117 transitions. [2021-10-07 14:55:10,332 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 8117 transitions. Word has length 20 [2021-10-07 14:55:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 2782 states and 8117 transitions. [2021-10-07 14:55:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 8117 transitions. [2021-10-07 14:55:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 14:55:10,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:10,335 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:10,372 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 [2021-10-07 14:55:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:10,549 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash 565344218, now seen corresponding path program 3 times [2021-10-07 14:55:10,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:10,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300475369] [2021-10-07 14:55:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:10,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:10,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:10,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724370964] [2021-10-07 14:55:10,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:55:10,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:10,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:10,574 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) [2021-10-07 14:55:10,575 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 [2021-10-07 14:55:10,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:55:10,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:10,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:10,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:12,785 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:14,642 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-07 14:55:14,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:14,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300475369] [2021-10-07 14:55:14,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:14,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724370964] [2021-10-07 14:55:14,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724370964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:14,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:14,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:14,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49753442] [2021-10-07 14:55:14,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:14,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:14,659 INFO L87 Difference]: Start difference. First operand 2782 states and 8117 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:16,666 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:16,677 INFO L93 Difference]: Finished difference Result 2787 states and 8130 transitions. [2021-10-07 14:55:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 20 [2021-10-07 14:55:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:16,683 INFO L225 Difference]: With dead ends: 2787 [2021-10-07 14:55:16,683 INFO L226 Difference]: Without dead ends: 2787 [2021-10-07 14:55:16,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5624.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-10-07 14:55:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2783. [2021-10-07 14:55:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2771 states have (on average 2.929989173583544) internal successors, (8119), 2782 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 8119 transitions. [2021-10-07 14:55:16,774 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 8119 transitions. Word has length 20 [2021-10-07 14:55:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:16,775 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 8119 transitions. [2021-10-07 14:55:16,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 8119 transitions. [2021-10-07 14:55:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 14:55:16,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:16,782 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:16,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-07 14:55:16,982 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,SelfDestructingSolverStorable37 [2021-10-07 14:55:16,983 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash -175560926, now seen corresponding path program 4 times [2021-10-07 14:55:16,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:16,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860399663] [2021-10-07 14:55:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:16,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:16,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:16,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075784983] [2021-10-07 14:55:16,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:55:16,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:16,994 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) [2021-10-07 14:55:16,994 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 [2021-10-07 14:55:17,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:55:17,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:17,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:17,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:18,817 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:20,646 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-07 14:55:20,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:20,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860399663] [2021-10-07 14:55:20,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:20,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075784983] [2021-10-07 14:55:20,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075784983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:20,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:20,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:20,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072362651] [2021-10-07 14:55:20,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:20,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:20,687 INFO L87 Difference]: Start difference. First operand 2783 states and 8119 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:22,695 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:22,706 INFO L93 Difference]: Finished difference Result 2785 states and 8124 transitions. [2021-10-07 14:55:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 20 [2021-10-07 14:55:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:22,713 INFO L225 Difference]: With dead ends: 2785 [2021-10-07 14:55:22,713 INFO L226 Difference]: Without dead ends: 2785 [2021-10-07 14:55:22,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5219.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-10-07 14:55:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2780. [2021-10-07 14:55:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2768 states have (on average 2.9302745664739884) internal successors, (8111), 2779 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 8111 transitions. [2021-10-07 14:55:22,800 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 8111 transitions. Word has length 20 [2021-10-07 14:55:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:22,800 INFO L470 AbstractCegarLoop]: Abstraction has 2780 states and 8111 transitions. [2021-10-07 14:55:22,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-10-07 14:55:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 8111 transitions. [2021-10-07 14:55:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:22,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:22,806 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:22,838 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 [2021-10-07 14:55:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:23,023 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1280852542, now seen corresponding path program 1 times [2021-10-07 14:55:23,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:23,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486113019] [2021-10-07 14:55:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:23,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:23,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:23,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067765940] [2021-10-07 14:55:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:23,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:23,032 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) [2021-10-07 14:55:23,033 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 [2021-10-07 14:55:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:23,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:23,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-07 14:55:23,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:23,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486113019] [2021-10-07 14:55:23,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:23,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067765940] [2021-10-07 14:55:23,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067765940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:23,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:23,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-07 14:55:23,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423083392] [2021-10-07 14:55:23,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:23,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:23,313 INFO L87 Difference]: Start difference. First operand 2780 states and 8111 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-07 14:55:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:23,366 INFO L93 Difference]: Finished difference Result 4291 states and 12115 transitions. [2021-10-07 14:55:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 21 [2021-10-07 14:55:23,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:23,379 INFO L225 Difference]: With dead ends: 4291 [2021-10-07 14:55:23,379 INFO L226 Difference]: Without dead ends: 4291 [2021-10-07 14:55:23,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-10-07 14:55:23,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3310. [2021-10-07 14:55:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3298 states have (on average 2.963614311704063) internal successors, (9774), 3309 states have internal predecessors, (9774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 9774 transitions. [2021-10-07 14:55:23,541 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 9774 transitions. Word has length 21 [2021-10-07 14:55:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:23,541 INFO L470 AbstractCegarLoop]: Abstraction has 3310 states and 9774 transitions. [2021-10-07 14:55:23,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-07 14:55:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 9774 transitions. [2021-10-07 14:55:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:23,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:23,545 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:23,584 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 [2021-10-07 14:55:23,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 14:55:23,759 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1949794681, now seen corresponding path program 1 times [2021-10-07 14:55:23,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:23,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145493457] [2021-10-07 14:55:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:23,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:23,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:23,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306928679] [2021-10-07 14:55:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:23,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:23,768 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) [2021-10-07 14:55:23,776 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 [2021-10-07 14:55:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:24,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:55:24,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 14:55:24,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:24,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145493457] [2021-10-07 14:55:24,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:24,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306928679] [2021-10-07 14:55:24,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306928679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:24,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:24,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-07 14:55:24,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805793278] [2021-10-07 14:55:24,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:24,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:24,540 INFO L87 Difference]: Start difference. First operand 3310 states and 9774 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:24,918 INFO L93 Difference]: Finished difference Result 3419 states and 9996 transitions. [2021-10-07 14:55:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:55:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 14:55:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:24,929 INFO L225 Difference]: With dead ends: 3419 [2021-10-07 14:55:24,929 INFO L226 Difference]: Without dead ends: 3418 [2021-10-07 14:55:24,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 404.8ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:55:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2021-10-07 14:55:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3315. [2021-10-07 14:55:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3303 states have (on average 2.96094459582198) internal successors, (9780), 3314 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 9780 transitions. [2021-10-07 14:55:25,053 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 9780 transitions. Word has length 21 [2021-10-07 14:55:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:25,054 INFO L470 AbstractCegarLoop]: Abstraction has 3315 states and 9780 transitions. [2021-10-07 14:55:25,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 9780 transitions. [2021-10-07 14:55:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:55:25,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:25,058 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:25,099 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 [2021-10-07 14:55:25,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:25,272 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1205560912, now seen corresponding path program 1 times [2021-10-07 14:55:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:25,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060578757] [2021-10-07 14:55:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:25,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:25,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:25,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519854664] [2021-10-07 14:55:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:25,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:25,281 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) [2021-10-07 14:55:25,282 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 [2021-10-07 14:55:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:55:25,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 14:55:25,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:25,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060578757] [2021-10-07 14:55:25,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:25,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519854664] [2021-10-07 14:55:25,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519854664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:25,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:25,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-07 14:55:25,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934222007] [2021-10-07 14:55:25,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:25,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:25,594 INFO L87 Difference]: Start difference. First operand 3315 states and 9780 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-07 14:55:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:25,695 INFO L93 Difference]: Finished difference Result 3365 states and 9820 transitions. [2021-10-07 14:55:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:55:25,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 22 [2021-10-07 14:55:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:25,703 INFO L225 Difference]: With dead ends: 3365 [2021-10-07 14:55:25,704 INFO L226 Difference]: Without dead ends: 3365 [2021-10-07 14:55:25,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:55:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2021-10-07 14:55:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3230. [2021-10-07 14:55:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 3218 states have (on average 2.968614045991299) internal successors, (9553), 3229 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 9553 transitions. [2021-10-07 14:55:25,816 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 9553 transitions. Word has length 22 [2021-10-07 14:55:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:25,817 INFO L470 AbstractCegarLoop]: Abstraction has 3230 states and 9553 transitions. [2021-10-07 14:55:25,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-10-07 14:55:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 9553 transitions. [2021-10-07 14:55:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:55:25,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:25,822 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:25,885 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 [2021-10-07 14:55:26,036 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,SelfDestructingSolverStorable41 [2021-10-07 14:55:26,037 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1587799005, now seen corresponding path program 2 times [2021-10-07 14:55:26,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:26,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216445526] [2021-10-07 14:55:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:26,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:26,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:26,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470867907] [2021-10-07 14:55:26,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:26,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:26,050 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) [2021-10-07 14:55:26,067 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 [2021-10-07 14:55:26,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:26,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:26,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:55:26,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 14:55:26,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:26,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216445526] [2021-10-07 14:55:26,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:26,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470867907] [2021-10-07 14:55:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470867907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:26,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:26,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:26,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18907226] [2021-10-07 14:55:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:26,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:26,334 INFO L87 Difference]: Start difference. First operand 3230 states and 9553 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-07 14:55:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:26,448 INFO L93 Difference]: Finished difference Result 3309 states and 9624 transitions. [2021-10-07 14:55:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:26,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 22 [2021-10-07 14:55:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:26,454 INFO L225 Difference]: With dead ends: 3309 [2021-10-07 14:55:26,455 INFO L226 Difference]: Without dead ends: 3062 [2021-10-07 14:55:26,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-07 14:55:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2245. [2021-10-07 14:55:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.8465324384787474) internal successors, (6362), 2244 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 6362 transitions. [2021-10-07 14:55:26,543 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 6362 transitions. Word has length 22 [2021-10-07 14:55:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:26,543 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 6362 transitions. [2021-10-07 14:55:26,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-07 14:55:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 6362 transitions. [2021-10-07 14:55:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:55:26,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:26,547 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:26,589 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 [2021-10-07 14:55:26,760 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,SelfDestructingSolverStorable42 [2021-10-07 14:55:26,761 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:26,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1751695591, now seen corresponding path program 2 times [2021-10-07 14:55:26,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:26,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111962760] [2021-10-07 14:55:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:26,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:26,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:26,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189751206] [2021-10-07 14:55:26,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:26,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:26,774 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) [2021-10-07 14:55:26,781 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 [2021-10-07 14:55:27,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:27,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:27,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:27,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:28,568 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:30,470 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 3 not checked. [2021-10-07 14:55:30,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:30,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111962760] [2021-10-07 14:55:30,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:30,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189751206] [2021-10-07 14:55:30,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189751206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:30,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:30,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:30,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149305044] [2021-10-07 14:55:30,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:30,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:30,497 INFO L87 Difference]: Start difference. First operand 2245 states and 6362 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:32,504 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:32,515 INFO L93 Difference]: Finished difference Result 2255 states and 6385 transitions. [2021-10-07 14:55:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:32,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 14:55:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:32,520 INFO L225 Difference]: With dead ends: 2255 [2021-10-07 14:55:32,520 INFO L226 Difference]: Without dead ends: 2255 [2021-10-07 14:55:32,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5141.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-10-07 14:55:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2247. [2021-10-07 14:55:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2237 states have (on average 2.846222619579794) internal successors, (6367), 2246 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6367 transitions. [2021-10-07 14:55:32,577 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6367 transitions. Word has length 23 [2021-10-07 14:55:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:32,578 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6367 transitions. [2021-10-07 14:55:32,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6367 transitions. [2021-10-07 14:55:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:55:32,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:32,581 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:32,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-07 14:55:32,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:32,795 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1751701388, now seen corresponding path program 1 times [2021-10-07 14:55:32,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:32,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367193459] [2021-10-07 14:55:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:32,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:32,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:32,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173049903] [2021-10-07 14:55:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:32,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:32,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:32,806 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) [2021-10-07 14:55:32,806 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 [2021-10-07 14:55:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:33,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 14:55:33,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:55:33,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:33,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367193459] [2021-10-07 14:55:33,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:33,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173049903] [2021-10-07 14:55:33,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173049903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:33,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:33,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-07 14:55:33,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319582279] [2021-10-07 14:55:33,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:33,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:33,278 INFO L87 Difference]: Start difference. First operand 2247 states and 6367 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-10-07 14:55:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:33,560 INFO L93 Difference]: Finished difference Result 4378 states and 11875 transitions. [2021-10-07 14:55:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:55:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 23 [2021-10-07 14:55:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:33,570 INFO L225 Difference]: With dead ends: 4378 [2021-10-07 14:55:33,570 INFO L226 Difference]: Without dead ends: 3508 [2021-10-07 14:55:33,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 184.3ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:55:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-10-07 14:55:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 2418. [2021-10-07 14:55:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2408 states have (on average 2.8492524916943522) internal successors, (6861), 2417 states have internal predecessors, (6861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 6861 transitions. [2021-10-07 14:55:33,653 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 6861 transitions. Word has length 23 [2021-10-07 14:55:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:33,653 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 6861 transitions. [2021-10-07 14:55:33,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-10-07 14:55:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 6861 transitions. [2021-10-07 14:55:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:55:33,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:33,656 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:33,696 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 [2021-10-07 14:55:33,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-07 14:55:33,872 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:33,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1629451794, now seen corresponding path program 1 times [2021-10-07 14:55:33,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:33,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374112455] [2021-10-07 14:55:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:33,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:33,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:33,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546287543] [2021-10-07 14:55:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:33,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:33,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:33,882 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) [2021-10-07 14:55:33,882 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 [2021-10-07 14:55:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:34,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:34,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-07 14:55:34,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:34,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374112455] [2021-10-07 14:55:34,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:34,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546287543] [2021-10-07 14:55:34,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546287543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:34,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:34,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:34,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525402742] [2021-10-07 14:55:34,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:34,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:34,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:34,466 INFO L87 Difference]: Start difference. First operand 2418 states and 6861 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:34,626 INFO L93 Difference]: Finished difference Result 2720 states and 7491 transitions. [2021-10-07 14:55:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:34,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 14:55:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:34,633 INFO L225 Difference]: With dead ends: 2720 [2021-10-07 14:55:34,633 INFO L226 Difference]: Without dead ends: 2720 [2021-10-07 14:55:34,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-10-07 14:55:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2366. [2021-10-07 14:55:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2358 states have (on average 2.7955894826123835) internal successors, (6592), 2365 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 6592 transitions. [2021-10-07 14:55:34,691 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 6592 transitions. Word has length 23 [2021-10-07 14:55:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:34,691 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 6592 transitions. [2021-10-07 14:55:34,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 6592 transitions. [2021-10-07 14:55:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:55:34,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:34,695 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:34,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-07 14:55:34,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:34,910 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:34,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1629451795, now seen corresponding path program 1 times [2021-10-07 14:55:34,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:34,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232050941] [2021-10-07 14:55:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:34,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:34,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:34,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799207754] [2021-10-07 14:55:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:34,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:34,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:34,924 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) [2021-10-07 14:55:34,926 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 [2021-10-07 14:55:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:35,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 14:55:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:35,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:35,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232050941] [2021-10-07 14:55:35,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:35,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799207754] [2021-10-07 14:55:35,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799207754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:35,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:35,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-07 14:55:35,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509283786] [2021-10-07 14:55:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:35,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:35,586 INFO L87 Difference]: Start difference. First operand 2366 states and 6592 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:35,976 INFO L93 Difference]: Finished difference Result 3200 states and 8735 transitions. [2021-10-07 14:55:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:55:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 14:55:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:35,982 INFO L225 Difference]: With dead ends: 3200 [2021-10-07 14:55:35,982 INFO L226 Difference]: Without dead ends: 2974 [2021-10-07 14:55:35,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:55:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-10-07 14:55:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2605. [2021-10-07 14:55:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2597 states have (on average 2.7685791297651137) internal successors, (7190), 2604 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 7190 transitions. [2021-10-07 14:55:36,035 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 7190 transitions. Word has length 23 [2021-10-07 14:55:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:36,035 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 7190 transitions. [2021-10-07 14:55:36,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 7190 transitions. [2021-10-07 14:55:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 14:55:36,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:36,039 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:36,069 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 [2021-10-07 14:55:36,253 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,SelfDestructingSolverStorable46 [2021-10-07 14:55:36,254 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash 381434285, now seen corresponding path program 2 times [2021-10-07 14:55:36,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:36,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094812462] [2021-10-07 14:55:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:36,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:36,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:36,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491435354] [2021-10-07 14:55:36,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:36,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:36,266 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) [2021-10-07 14:55:36,275 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 [2021-10-07 14:55:36,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:36,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:36,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 14:55:36,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-07 14:55:37,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:37,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094812462] [2021-10-07 14:55:37,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:37,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491435354] [2021-10-07 14:55:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491435354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:37,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:37,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-07 14:55:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350237896] [2021-10-07 14:55:37,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:37,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:37,061 INFO L87 Difference]: Start difference. First operand 2605 states and 7190 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:37,215 INFO L93 Difference]: Finished difference Result 2499 states and 6766 transitions. [2021-10-07 14:55:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 14:55:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:37,221 INFO L225 Difference]: With dead ends: 2499 [2021-10-07 14:55:37,221 INFO L226 Difference]: Without dead ends: 1914 [2021-10-07 14:55:37,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:55:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-10-07 14:55:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1418. [2021-10-07 14:55:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1416 states have (on average 2.5508474576271185) internal successors, (3612), 1417 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 3612 transitions. [2021-10-07 14:55:37,265 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 3612 transitions. Word has length 24 [2021-10-07 14:55:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:37,266 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 3612 transitions. [2021-10-07 14:55:37,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 3612 transitions. [2021-10-07 14:55:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 14:55:37,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:37,268 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:37,307 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 [2021-10-07 14:55:37,483 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,SelfDestructingSolverStorable47 [2021-10-07 14:55:37,483 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash -144655927, now seen corresponding path program 2 times [2021-10-07 14:55:37,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:37,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807500019] [2021-10-07 14:55:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:37,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:37,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:37,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931871810] [2021-10-07 14:55:37,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:37,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:37,495 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) [2021-10-07 14:55:37,510 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 [2021-10-07 14:55:37,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:55:37,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:37,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:37,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:39,447 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:41,882 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-07 14:55:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807500019] [2021-10-07 14:55:41,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931871810] [2021-10-07 14:55:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931871810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:41,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:41,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:41,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135258467] [2021-10-07 14:55:41,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:41,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:41,904 INFO L87 Difference]: Start difference. First operand 1418 states and 3612 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,911 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:43,917 INFO L93 Difference]: Finished difference Result 1427 states and 3636 transitions. [2021-10-07 14:55:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:43,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 14:55:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:43,919 INFO L225 Difference]: With dead ends: 1427 [2021-10-07 14:55:43,919 INFO L226 Difference]: Without dead ends: 1427 [2021-10-07 14:55:43,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5646.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-10-07 14:55:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1419. [2021-10-07 14:55:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1417 states have (on average 2.551164431898377) internal successors, (3615), 1418 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 3615 transitions. [2021-10-07 14:55:43,943 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 3615 transitions. Word has length 25 [2021-10-07 14:55:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:43,943 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 3615 transitions. [2021-10-07 14:55:43,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 3615 transitions. [2021-10-07 14:55:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 14:55:43,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:43,945 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:43,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-07 14:55:44,158 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,SelfDestructingSolverStorable48 [2021-10-07 14:55:44,159 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:44,159 INFO L82 PathProgramCache]: Analyzing trace with hash -149198760, now seen corresponding path program 3 times [2021-10-07 14:55:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:44,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134780679] [2021-10-07 14:55:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:44,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:44,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:44,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218123037] [2021-10-07 14:55:44,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:55:44,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:44,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:44,184 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) [2021-10-07 14:55:44,189 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 [2021-10-07 14:55:44,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:55:44,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:44,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:44,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:46,125 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:48,111 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-07 14:55:48,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:48,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134780679] [2021-10-07 14:55:48,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:48,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218123037] [2021-10-07 14:55:48,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218123037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:48,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:48,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:48,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650867819] [2021-10-07 14:55:48,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:48,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:48,114 INFO L87 Difference]: Start difference. First operand 1419 states and 3615 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:50,123 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:50,128 INFO L93 Difference]: Finished difference Result 1427 states and 3633 transitions. [2021-10-07 14:55:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 14:55:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:50,130 INFO L225 Difference]: With dead ends: 1427 [2021-10-07 14:55:50,130 INFO L226 Difference]: Without dead ends: 1427 [2021-10-07 14:55:50,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5275.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-10-07 14:55:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1419. [2021-10-07 14:55:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1417 states have (on average 2.551164431898377) internal successors, (3615), 1418 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 3615 transitions. [2021-10-07 14:55:50,172 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 3615 transitions. Word has length 25 [2021-10-07 14:55:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:50,173 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 3615 transitions. [2021-10-07 14:55:50,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 3615 transitions. [2021-10-07 14:55:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 14:55:50,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:50,175 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:50,214 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 [2021-10-07 14:55:50,388 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,SelfDestructingSolverStorable49 [2021-10-07 14:55:50,389 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash -154769677, now seen corresponding path program 3 times [2021-10-07 14:55:50,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:50,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671992131] [2021-10-07 14:55:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:50,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:50,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:50,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537697403] [2021-10-07 14:55:50,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:55:50,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:50,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:50,400 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) [2021-10-07 14:55:50,401 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 [2021-10-07 14:55:50,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:55:50,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:55:50,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:52,348 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:54,318 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:55:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-07 14:55:54,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:54,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671992131] [2021-10-07 14:55:54,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:54,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537697403] [2021-10-07 14:55:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537697403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:54,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:54,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:55:54,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866986952] [2021-10-07 14:55:54,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:55:54,321 INFO L87 Difference]: Start difference. First operand 1419 states and 3615 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:56,331 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:55:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:56,336 INFO L93 Difference]: Finished difference Result 1443 states and 3685 transitions. [2021-10-07 14:55:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 14:55:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:56,340 INFO L225 Difference]: With dead ends: 1443 [2021-10-07 14:55:56,340 INFO L226 Difference]: Without dead ends: 1443 [2021-10-07 14:55:56,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5293.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:55:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-07 14:55:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1426. [2021-10-07 14:55:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1424 states have (on average 2.554073033707865) internal successors, (3637), 1425 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3637 transitions. [2021-10-07 14:55:56,379 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3637 transitions. Word has length 25 [2021-10-07 14:55:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 3637 transitions. [2021-10-07 14:55:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3637 transitions. [2021-10-07 14:55:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 14:55:56,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:56,382 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:56,421 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 [2021-10-07 14:55:56,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:56,597 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:56,598 INFO L82 PathProgramCache]: Analyzing trace with hash -806086560, now seen corresponding path program 4 times [2021-10-07 14:55:56,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:56,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39358361] [2021-10-07 14:55:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:56,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:56,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:56,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317711636] [2021-10-07 14:55:56,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:55:56,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:56,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:56,621 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) [2021-10-07 14:55:56,637 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 [2021-10-07 14:55:56,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:55:56,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:56,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:55:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-07 14:55:57,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:57,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39358361] [2021-10-07 14:55:57,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:55:57,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317711636] [2021-10-07 14:55:57,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317711636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:57,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:55:57,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-07 14:55:57,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906020037] [2021-10-07 14:55:57,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:55:57,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:55:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:55:57,047 INFO L87 Difference]: Start difference. First operand 1426 states and 3637 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:57,079 INFO L93 Difference]: Finished difference Result 1755 states and 4488 transitions. [2021-10-07 14:55:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:55:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 14:55:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:57,082 INFO L225 Difference]: With dead ends: 1755 [2021-10-07 14:55:57,083 INFO L226 Difference]: Without dead ends: 1755 [2021-10-07 14:55:57,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:55:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-10-07 14:55:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1752. [2021-10-07 14:55:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1750 states have (on average 2.56) internal successors, (4480), 1751 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 4480 transitions. [2021-10-07 14:55:57,109 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 4480 transitions. Word has length 25 [2021-10-07 14:55:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:57,109 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 4480 transitions. [2021-10-07 14:55:57,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 4480 transitions. [2021-10-07 14:55:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 14:55:57,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:57,111 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:57,136 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 [2021-10-07 14:55:57,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:57,312 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:55:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1273821531, now seen corresponding path program 5 times [2021-10-07 14:55:57,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:57,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254291562] [2021-10-07 14:55:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:57,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:57,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:55:57,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129156381] [2021-10-07 14:55:57,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:55:57,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:57,323 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) [2021-10-07 14:55:57,324 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 [2021-10-07 14:55:59,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-07 14:55:59,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:59,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:55:59,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 14:56:00,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:00,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254291562] [2021-10-07 14:56:00,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:56:00,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129156381] [2021-10-07 14:56:00,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129156381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:00,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:00,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-07 14:56:00,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977556974] [2021-10-07 14:56:00,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:00,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:00,189 INFO L87 Difference]: Start difference. First operand 1752 states and 4480 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:00,502 INFO L93 Difference]: Finished difference Result 3387 states and 8417 transitions. [2021-10-07 14:56:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:56:00,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-07 14:56:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:00,507 INFO L225 Difference]: With dead ends: 3387 [2021-10-07 14:56:00,507 INFO L226 Difference]: Without dead ends: 1754 [2021-10-07 14:56:00,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 231.4ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:56:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-10-07 14:56:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1754. [2021-10-07 14:56:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 2.558219178082192) internal successors, (4482), 1753 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 4482 transitions. [2021-10-07 14:56:00,551 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 4482 transitions. Word has length 27 [2021-10-07 14:56:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 4482 transitions. [2021-10-07 14:56:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 4482 transitions. [2021-10-07 14:56:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 14:56:00,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:00,554 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:00,601 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 [2021-10-07 14:56:00,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:00,769 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:56:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash -424233104, now seen corresponding path program 6 times [2021-10-07 14:56:00,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:00,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078265624] [2021-10-07 14:56:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:00,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:00,781 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:56:00,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592894149] [2021-10-07 14:56:00,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:56:00,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:00,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:00,783 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) [2021-10-07 14:56:00,801 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 [2021-10-07 14:56:01,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 14:56:01,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:56:01,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:56:01,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:02,760 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:56:04,947 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:56:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 4 not checked. [2021-10-07 14:56:04,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:04,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078265624] [2021-10-07 14:56:04,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:56:04,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592894149] [2021-10-07 14:56:04,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592894149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:04,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:04,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:56:04,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478938396] [2021-10-07 14:56:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:04,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:56:04,972 INFO L87 Difference]: Start difference. First operand 1754 states and 4482 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:06,978 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:56:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:06,986 INFO L93 Difference]: Finished difference Result 1768 states and 4515 transitions. [2021-10-07 14:56:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-07 14:56:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:06,989 INFO L225 Difference]: With dead ends: 1768 [2021-10-07 14:56:06,989 INFO L226 Difference]: Without dead ends: 1768 [2021-10-07 14:56:06,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5446.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:56:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-10-07 14:56:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1756. [2021-10-07 14:56:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1754 states have (on average 2.558152793614595) internal successors, (4487), 1755 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 4487 transitions. [2021-10-07 14:56:07,015 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 4487 transitions. Word has length 29 [2021-10-07 14:56:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:07,015 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 4487 transitions. [2021-10-07 14:56:07,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 4487 transitions. [2021-10-07 14:56:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 14:56:07,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:07,017 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:07,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-07 14:56:07,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-07 14:56:07,218 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:56:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash -424238901, now seen corresponding path program 4 times [2021-10-07 14:56:07,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:07,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034783639] [2021-10-07 14:56:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:07,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:07,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:56:07,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433399051] [2021-10-07 14:56:07,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:56:07,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:07,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:07,230 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) [2021-10-07 14:56:07,231 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 [2021-10-07 14:56:07,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:56:07,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:56:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 14:56:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:56:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 14:56:07,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:07,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034783639] [2021-10-07 14:56:07,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:56:07,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433399051] [2021-10-07 14:56:07,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433399051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:56:07,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:56:07,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-07 14:56:07,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794066979] [2021-10-07 14:56:07,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:56:07,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:56:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:56:07,714 INFO L87 Difference]: Start difference. First operand 1756 states and 4487 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 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) [2021-10-07 14:56:07,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:07,748 INFO L93 Difference]: Finished difference Result 2087 states and 5343 transitions. [2021-10-07 14:56:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:56:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 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 29 [2021-10-07 14:56:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:07,753 INFO L225 Difference]: With dead ends: 2087 [2021-10-07 14:56:07,753 INFO L226 Difference]: Without dead ends: 2087 [2021-10-07 14:56:07,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:56:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2021-10-07 14:56:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2082. [2021-10-07 14:56:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 2.5625) internal successors, (5330), 2081 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 5330 transitions. [2021-10-07 14:56:07,792 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 5330 transitions. Word has length 29 [2021-10-07 14:56:07,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:07,792 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 5330 transitions. [2021-10-07 14:56:07,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 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) [2021-10-07 14:56:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 5330 transitions. [2021-10-07 14:56:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-07 14:56:07,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:07,796 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:07,823 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 [2021-10-07 14:56:07,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:07,997 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:56:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash 615123728, now seen corresponding path program 5 times [2021-10-07 14:56:07,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:07,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913287167] [2021-10-07 14:56:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:07,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:08,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:56:08,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406299884] [2021-10-07 14:56:08,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:56:08,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:56:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:56:08,008 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) [2021-10-07 14:56:08,009 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 [2021-10-07 14:58:33,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-07 14:58:33,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:33,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 14:58:33,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 14:58:33,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:33,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913287167] [2021-10-07 14:58:33,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:33,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406299884] [2021-10-07 14:58:33,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406299884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:33,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:33,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-07 14:58:33,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381772331] [2021-10-07 14:58:33,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:58:33,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:58:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:58:33,592 INFO L87 Difference]: Start difference. First operand 2082 states and 5330 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 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) [2021-10-07 14:58:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:33,978 INFO L93 Difference]: Finished difference Result 4072 states and 10171 transitions. [2021-10-07 14:58:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 14:58:33,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 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 31 [2021-10-07 14:58:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:33,985 INFO L225 Difference]: With dead ends: 4072 [2021-10-07 14:58:33,985 INFO L226 Difference]: Without dead ends: 2084 [2021-10-07 14:58:33,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 307.7ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-10-07 14:58:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2084. [2021-10-07 14:58:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2082 states have (on average 2.5609990393852065) internal successors, (5332), 2083 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 5332 transitions. [2021-10-07 14:58:34,032 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 5332 transitions. Word has length 31 [2021-10-07 14:58:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:34,032 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 5332 transitions. [2021-10-07 14:58:34,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 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) [2021-10-07 14:58:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 5332 transitions. [2021-10-07 14:58:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 14:58:34,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:34,035 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:34,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-07 14:58:34,235 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,SelfDestructingSolverStorable55 [2021-10-07 14:58:34,236 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash -71843675, now seen corresponding path program 6 times [2021-10-07 14:58:34,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:34,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485887912] [2021-10-07 14:58:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:34,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:34,245 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:34,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126476484] [2021-10-07 14:58:34,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:58:34,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:34,247 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) [2021-10-07 14:58:34,248 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 [2021-10-07 14:58:34,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 14:58:34,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:58:34,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:36,207 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:38,320 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2021-10-07 14:58:38,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:38,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485887912] [2021-10-07 14:58:38,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:38,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126476484] [2021-10-07 14:58:38,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126476484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:38,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:38,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:58:38,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433814325] [2021-10-07 14:58:38,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:38,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:58:38,347 INFO L87 Difference]: Start difference. First operand 2084 states and 5332 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:40,354 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:58:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:40,363 INFO L93 Difference]: Finished difference Result 2099 states and 5373 transitions. [2021-10-07 14:58:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-07 14:58:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:40,367 INFO L225 Difference]: With dead ends: 2099 [2021-10-07 14:58:40,367 INFO L226 Difference]: Without dead ends: 2099 [2021-10-07 14:58:40,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5281.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:58:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-10-07 14:58:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2083. [2021-10-07 14:58:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2081 states have (on average 2.560788082652571) internal successors, (5329), 2082 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5329 transitions. [2021-10-07 14:58:40,402 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5329 transitions. Word has length 33 [2021-10-07 14:58:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:40,402 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5329 transitions. [2021-10-07 14:58:40,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5329 transitions. [2021-10-07 14:58:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 14:58:40,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:40,405 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:40,432 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 [2021-10-07 14:58:40,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:40,607 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1044128068, now seen corresponding path program 7 times [2021-10-07 14:58:40,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:40,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177776143] [2021-10-07 14:58:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:40,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:40,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:40,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313869149] [2021-10-07 14:58:40,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:58:40,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:40,617 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) [2021-10-07 14:58:40,633 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 [2021-10-07 14:58:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:41,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:58:41,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-07 14:58:41,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:41,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177776143] [2021-10-07 14:58:41,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:41,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313869149] [2021-10-07 14:58:41,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313869149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:41,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:41,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-07 14:58:41,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589022256] [2021-10-07 14:58:41,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:58:41,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:58:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:58:41,164 INFO L87 Difference]: Start difference. First operand 2083 states and 5329 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:41,210 INFO L93 Difference]: Finished difference Result 2413 states and 6182 transitions. [2021-10-07 14:58:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:58:41,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-07 14:58:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:41,215 INFO L225 Difference]: With dead ends: 2413 [2021-10-07 14:58:41,216 INFO L226 Difference]: Without dead ends: 2413 [2021-10-07 14:58:41,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:58:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-10-07 14:58:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2021-10-07 14:58:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2407 states have (on average 2.5641877856252595) internal successors, (6172), 2408 states have internal predecessors, (6172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6172 transitions. [2021-10-07 14:58:41,274 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6172 transitions. Word has length 33 [2021-10-07 14:58:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:41,275 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 6172 transitions. [2021-10-07 14:58:41,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6172 transitions. [2021-10-07 14:58:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 14:58:41,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:41,280 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:41,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-07 14:58:41,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-07 14:58:41,496 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash -509111777, now seen corresponding path program 8 times [2021-10-07 14:58:41,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:41,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220059914] [2021-10-07 14:58:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:41,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:41,506 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:41,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997674354] [2021-10-07 14:58:41,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:41,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:41,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:41,508 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) [2021-10-07 14:58:41,508 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 [2021-10-07 14:58:41,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:41,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:41,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:58:41,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:43,771 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:45,814 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 6 not checked. [2021-10-07 14:58:45,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:45,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220059914] [2021-10-07 14:58:45,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:45,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997674354] [2021-10-07 14:58:45,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997674354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:45,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:45,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:58:45,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577078523] [2021-10-07 14:58:45,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:45,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:58:45,854 INFO L87 Difference]: Start difference. First operand 2409 states and 6172 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:47,861 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:58:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:47,869 INFO L93 Difference]: Finished difference Result 2425 states and 6210 transitions. [2021-10-07 14:58:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-07 14:58:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:47,873 INFO L225 Difference]: With dead ends: 2425 [2021-10-07 14:58:47,873 INFO L226 Difference]: Without dead ends: 2425 [2021-10-07 14:58:47,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5487.3ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:58:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-10-07 14:58:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2407. [2021-10-07 14:58:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 2.564656964656965) internal successors, (6168), 2406 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 6168 transitions. [2021-10-07 14:58:47,910 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 6168 transitions. Word has length 35 [2021-10-07 14:58:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 6168 transitions. [2021-10-07 14:58:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 6168 transitions. [2021-10-07 14:58:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 14:58:47,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:47,913 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:47,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-07 14:58:48,114 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,SelfDestructingSolverStorable58 [2021-10-07 14:58:48,114 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:48,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash -509117574, now seen corresponding path program 7 times [2021-10-07 14:58:48,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:48,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083024016] [2021-10-07 14:58:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:48,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:48,141 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:48,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280607458] [2021-10-07 14:58:48,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:58:48,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:48,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:48,143 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) [2021-10-07 14:58:48,144 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 [2021-10-07 14:58:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:48,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 14:58:48,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-07 14:58:48,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:48,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083024016] [2021-10-07 14:58:48,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:48,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280607458] [2021-10-07 14:58:48,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280607458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:48,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:48,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-07 14:58:48,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134248499] [2021-10-07 14:58:48,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:58:48,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:58:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:58:48,937 INFO L87 Difference]: Start difference. First operand 2407 states and 6168 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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) [2021-10-07 14:58:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:49,395 INFO L93 Difference]: Finished difference Result 4752 states and 11913 transitions. [2021-10-07 14:58:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 14:58:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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 35 [2021-10-07 14:58:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:49,401 INFO L225 Difference]: With dead ends: 4752 [2021-10-07 14:58:49,402 INFO L226 Difference]: Without dead ends: 2409 [2021-10-07 14:58:49,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 355.3ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-10-07 14:58:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2021-10-07 14:58:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2409. [2021-10-07 14:58:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2407 states have (on average 2.563356875778978) internal successors, (6170), 2408 states have internal predecessors, (6170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6170 transitions. [2021-10-07 14:58:49,444 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6170 transitions. Word has length 35 [2021-10-07 14:58:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:49,445 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 6170 transitions. [2021-10-07 14:58:49,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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) [2021-10-07 14:58:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6170 transitions. [2021-10-07 14:58:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-07 14:58:49,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:49,449 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:49,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-07 14:58:49,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:49,650 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:49,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 520052741, now seen corresponding path program 8 times [2021-10-07 14:58:49,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:49,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821971591] [2021-10-07 14:58:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:49,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:49,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:49,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496361806] [2021-10-07 14:58:49,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:49,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:49,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:49,662 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) [2021-10-07 14:58:49,666 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 [2021-10-07 14:58:50,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:50,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:50,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:58:50,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:51,881 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:53,845 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:58:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 6 not checked. [2021-10-07 14:58:53,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:53,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821971591] [2021-10-07 14:58:53,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:53,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496361806] [2021-10-07 14:58:53,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496361806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:53,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:53,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:58:53,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932432893] [2021-10-07 14:58:53,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:53,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:58:53,902 INFO L87 Difference]: Start difference. First operand 2409 states and 6170 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,908 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:58:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:55,916 INFO L93 Difference]: Finished difference Result 2426 states and 6215 transitions. [2021-10-07 14:58:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-07 14:58:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:55,920 INFO L225 Difference]: With dead ends: 2426 [2021-10-07 14:58:55,920 INFO L226 Difference]: Without dead ends: 2426 [2021-10-07 14:58:55,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5324.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:58:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-10-07 14:58:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2406. [2021-10-07 14:58:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 2404 states have (on average 2.562811980033278) internal successors, (6161), 2405 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 6161 transitions. [2021-10-07 14:58:55,980 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 6161 transitions. Word has length 37 [2021-10-07 14:58:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 2406 states and 6161 transitions. [2021-10-07 14:58:55,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 6161 transitions. [2021-10-07 14:58:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-07 14:58:55,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:55,985 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:56,025 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 [2021-10-07 14:58:56,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:56,200 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1790686940, now seen corresponding path program 1 times [2021-10-07 14:58:56,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:56,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132513894] [2021-10-07 14:58:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:56,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:56,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:56,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695629861] [2021-10-07 14:58:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:56,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:56,214 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) [2021-10-07 14:58:56,230 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 [2021-10-07 14:58:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:56,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 14:58:56,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-07 14:58:56,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:56,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132513894] [2021-10-07 14:58:56,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:58:56,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695629861] [2021-10-07 14:58:56,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695629861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:56,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:56,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-07 14:58:56,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535323661] [2021-10-07 14:58:56,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:58:56,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:58:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:58:56,837 INFO L87 Difference]: Start difference. First operand 2406 states and 6161 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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) [2021-10-07 14:58:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:56,890 INFO L93 Difference]: Finished difference Result 2732 states and 7004 transitions. [2021-10-07 14:58:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:58:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 37 [2021-10-07 14:58:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:56,897 INFO L225 Difference]: With dead ends: 2732 [2021-10-07 14:58:56,898 INFO L226 Difference]: Without dead ends: 2732 [2021-10-07 14:58:56,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:58:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-10-07 14:58:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-10-07 14:58:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2730 states have (on average 2.565567765567766) internal successors, (7004), 2731 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 7004 transitions. [2021-10-07 14:58:56,963 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 7004 transitions. Word has length 37 [2021-10-07 14:58:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:56,964 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 7004 transitions. [2021-10-07 14:58:56,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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) [2021-10-07 14:58:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 7004 transitions. [2021-10-07 14:58:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-07 14:58:56,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:56,969 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:57,015 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 [2021-10-07 14:58:57,183 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,SelfDestructingSolverStorable61 [2021-10-07 14:58:57,183 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:58:57,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:57,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1431813225, now seen corresponding path program 2 times [2021-10-07 14:58:57,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:57,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397545739] [2021-10-07 14:58:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:57,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:57,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:58:57,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561174172] [2021-10-07 14:58:57,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:57,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:57,234 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) [2021-10-07 14:58:57,251 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 [2021-10-07 14:58:57,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:57,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:58:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:59,284 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:01,351 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 7 not checked. [2021-10-07 14:59:01,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:01,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397545739] [2021-10-07 14:59:01,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:01,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561174172] [2021-10-07 14:59:01,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561174172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:01,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:59:01,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58934346] [2021-10-07 14:59:01,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:59:01,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:59:01,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:59:01,354 INFO L87 Difference]: Start difference. First operand 2732 states and 7004 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,363 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:59:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:03,372 INFO L93 Difference]: Finished difference Result 2753 states and 7046 transitions. [2021-10-07 14:59:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:59:03,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-07 14:59:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:03,377 INFO L225 Difference]: With dead ends: 2753 [2021-10-07 14:59:03,377 INFO L226 Difference]: Without dead ends: 2753 [2021-10-07 14:59:03,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5219.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:59:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-10-07 14:59:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2734. [2021-10-07 14:59:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2732 states have (on average 2.5651537335285504) internal successors, (7008), 2733 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7008 transitions. [2021-10-07 14:59:03,418 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7008 transitions. Word has length 39 [2021-10-07 14:59:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:03,418 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 7008 transitions. [2021-10-07 14:59:03,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7008 transitions. [2021-10-07 14:59:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-07 14:59:03,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:03,422 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:03,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:03,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:03,623 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 127864963, now seen corresponding path program 3 times [2021-10-07 14:59:03,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:03,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121638203] [2021-10-07 14:59:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:03,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:03,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:03,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748284813] [2021-10-07 14:59:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:03,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:03,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:03,636 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) [2021-10-07 14:59:03,644 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 [2021-10-07 14:59:04,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:59:04,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:04,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:59:04,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:05,760 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:07,914 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 7 not checked. [2021-10-07 14:59:07,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:07,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121638203] [2021-10-07 14:59:07,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:07,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748284813] [2021-10-07 14:59:07,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748284813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:07,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:07,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:59:07,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682325425] [2021-10-07 14:59:07,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:59:07,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:07,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:59:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:59:07,934 INFO L87 Difference]: Start difference. First operand 2734 states and 7008 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:09,942 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:59:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:09,951 INFO L93 Difference]: Finished difference Result 2751 states and 7042 transitions. [2021-10-07 14:59:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:59:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-07 14:59:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:09,956 INFO L225 Difference]: With dead ends: 2751 [2021-10-07 14:59:09,956 INFO L226 Difference]: Without dead ends: 2751 [2021-10-07 14:59:09,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5292.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:59:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-10-07 14:59:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2730. [2021-10-07 14:59:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2728 states have (on average 2.565982404692082) internal successors, (7000), 2729 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 7000 transitions. [2021-10-07 14:59:10,001 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 7000 transitions. Word has length 39 [2021-10-07 14:59:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:10,002 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 7000 transitions. [2021-10-07 14:59:10,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:10,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 7000 transitions. [2021-10-07 14:59:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-07 14:59:10,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:10,007 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:10,034 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 [2021-10-07 14:59:10,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:10,208 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:10,209 INFO L82 PathProgramCache]: Analyzing trace with hash -283159684, now seen corresponding path program 1 times [2021-10-07 14:59:10,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:10,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749235198] [2021-10-07 14:59:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:10,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:10,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:10,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228418813] [2021-10-07 14:59:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:10,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:10,222 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) [2021-10-07 14:59:10,223 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 [2021-10-07 14:59:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:10,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 14:59:10,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-07 14:59:11,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:11,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749235198] [2021-10-07 14:59:11,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:11,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228418813] [2021-10-07 14:59:11,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228418813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:11,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:11,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-07 14:59:11,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241298367] [2021-10-07 14:59:11,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:59:11,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:59:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:11,202 INFO L87 Difference]: Start difference. First operand 2730 states and 7000 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 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) [2021-10-07 14:59:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:11,752 INFO L93 Difference]: Finished difference Result 5430 states and 13649 transitions. [2021-10-07 14:59:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 14:59:11,753 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 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 40 [2021-10-07 14:59:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:11,758 INFO L225 Difference]: With dead ends: 5430 [2021-10-07 14:59:11,758 INFO L226 Difference]: Without dead ends: 2732 [2021-10-07 14:59:11,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 486.5ms TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:59:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-10-07 14:59:11,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-10-07 14:59:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2730 states have (on average 2.564835164835165) internal successors, (7002), 2731 states have internal predecessors, (7002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 7002 transitions. [2021-10-07 14:59:11,845 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 7002 transitions. Word has length 40 [2021-10-07 14:59:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:11,845 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 7002 transitions. [2021-10-07 14:59:11,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 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) [2021-10-07 14:59:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 7002 transitions. [2021-10-07 14:59:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 14:59:11,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:11,851 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:11,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:12,064 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,SelfDestructingSolverStorable64 [2021-10-07 14:59:12,064 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1806244793, now seen corresponding path program 2 times [2021-10-07 14:59:12,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:12,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57883608] [2021-10-07 14:59:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:12,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:12,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:12,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958365623] [2021-10-07 14:59:12,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:12,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:12,075 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) [2021-10-07 14:59:12,076 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 [2021-10-07 14:59:12,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:59:12,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:12,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:59:12,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:14,139 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:16,272 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 7 not checked. [2021-10-07 14:59:16,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:16,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57883608] [2021-10-07 14:59:16,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:16,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958365623] [2021-10-07 14:59:16,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958365623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:16,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:16,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:59:16,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851804757] [2021-10-07 14:59:16,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:59:16,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:59:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:59:16,287 INFO L87 Difference]: Start difference. First operand 2732 states and 7002 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:59:18,295 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:59:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:18,310 INFO L93 Difference]: Finished difference Result 2769 states and 7091 transitions. [2021-10-07 14:59:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:59:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 42 [2021-10-07 14:59:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:18,315 INFO L225 Difference]: With dead ends: 2769 [2021-10-07 14:59:18,315 INFO L226 Difference]: Without dead ends: 2769 [2021-10-07 14:59:18,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5119.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:59:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-10-07 14:59:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2734. [2021-10-07 14:59:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2732 states have (on average 2.5644216691068813) internal successors, (7006), 2733 states have internal predecessors, (7006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7006 transitions. [2021-10-07 14:59:18,356 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7006 transitions. Word has length 42 [2021-10-07 14:59:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:18,356 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 7006 transitions. [2021-10-07 14:59:18,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:59:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7006 transitions. [2021-10-07 14:59:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 14:59:18,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:18,360 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:18,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-07 14:59:18,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:18,562 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1816358543, now seen corresponding path program 3 times [2021-10-07 14:59:18,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:18,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428293921] [2021-10-07 14:59:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:18,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:18,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:18,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732078803] [2021-10-07 14:59:18,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:18,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:18,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:18,574 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:18,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-07 14:59:19,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 14:59:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:59:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:20,796 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:22,909 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-07 14:59:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 7 not checked. [2021-10-07 14:59:22,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:22,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428293921] [2021-10-07 14:59:22,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:22,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732078803] [2021-10-07 14:59:22,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732078803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:22,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:22,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-07 14:59:22,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422006261] [2021-10-07 14:59:22,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:59:22,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:59:22,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-07 14:59:22,912 INFO L87 Difference]: Start difference. First operand 2734 states and 7006 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:59:24,921 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-07 14:59:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,932 INFO L93 Difference]: Finished difference Result 2817 states and 7195 transitions. [2021-10-07 14:59:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:59:24,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 42 [2021-10-07 14:59:24,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,937 INFO L225 Difference]: With dead ends: 2817 [2021-10-07 14:59:24,938 INFO L226 Difference]: Without dead ends: 2817 [2021-10-07 14:59:24,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5296.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-07 14:59:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-10-07 14:59:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2766. [2021-10-07 14:59:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 2.564399421128799) internal successors, (7088), 2765 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 7088 transitions. [2021-10-07 14:59:25,007 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 7088 transitions. Word has length 42 [2021-10-07 14:59:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:25,008 INFO L470 AbstractCegarLoop]: Abstraction has 2766 states and 7088 transitions. [2021-10-07 14:59:25,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-07 14:59:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 7088 transitions. [2021-10-07 14:59:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 14:59:25,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:25,013 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:25,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:25,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:25,225 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1491178225, now seen corresponding path program 4 times [2021-10-07 14:59:25,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:25,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304611554] [2021-10-07 14:59:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:25,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:25,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:25,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367128712] [2021-10-07 14:59:25,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:25,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:25,238 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:25,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-07 14:59:25,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:25,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:25,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:59:25,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-07 14:59:25,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:25,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304611554] [2021-10-07 14:59:25,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-07 14:59:25,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367128712] [2021-10-07 14:59:25,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367128712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:25,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:25,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-07 14:59:25,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651047316] [2021-10-07 14:59:25,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:59:25,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:59:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:25,996 INFO L87 Difference]: Start difference. First operand 2766 states and 7088 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2021-10-07 14:59:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:26,060 INFO L93 Difference]: Finished difference Result 3098 states and 7945 transitions. [2021-10-07 14:59:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:59:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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 42 [2021-10-07 14:59:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:26,069 INFO L225 Difference]: With dead ends: 3098 [2021-10-07 14:59:26,069 INFO L226 Difference]: Without dead ends: 3098 [2021-10-07 14:59:26,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-10-07 14:59:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3096. [2021-10-07 14:59:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3094 states have (on average 2.5665804783451844) internal successors, (7941), 3095 states have internal predecessors, (7941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 7941 transitions. [2021-10-07 14:59:26,167 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 7941 transitions. Word has length 42 [2021-10-07 14:59:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:26,167 INFO L470 AbstractCegarLoop]: Abstraction has 3096 states and 7941 transitions. [2021-10-07 14:59:26,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 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) [2021-10-07 14:59:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 7941 transitions. [2021-10-07 14:59:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-07 14:59:26,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:26,179 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:26,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-07 14:59:26,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-07 14:59:26,394 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-07 14:59:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1492177140, now seen corresponding path program 5 times [2021-10-07 14:59:26,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:26,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680385063] [2021-10-07 14:59:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:26,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:26,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-07 14:59:26,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664285237] [2021-10-07 14:59:26,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:26,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:26,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:26,406 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:26,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process Received shutdown request... [2021-10-07 15:08:21,360 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:08:21,360 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 [2021-10-07 15:08:22,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2021-10-07 15:08:22,561 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forcibly destroying the process [2021-10-07 15:08:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 137 [2021-10-07 15:08:22,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-07 15:08:22,601 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-07 15:08:22,602 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2021-10-07 15:08:22,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,606 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,607 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,608 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,608 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,608 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,608 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:08:22,614 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:08:22,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:08:22,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:08:22 BasicIcfg [2021-10-07 15:08:22,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:08:22,616 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:08:22,617 INFO L168 Benchmark]: Toolchain (without parser) took 858618.18 ms. Allocated memory was 164.6 MB in the beginning and 287.3 MB in the end (delta: 122.7 MB). Free memory was 139.0 MB in the beginning and 101.2 MB in the end (delta: 37.8 MB). Peak memory consumption was 160.8 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,618 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:08:22,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.12 ms. Allocated memory is still 164.6 MB. Free memory was 138.6 MB in the beginning and 127.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.75 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 125.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,619 INFO L168 Benchmark]: Boogie Preprocessor took 99.28 ms. Allocated memory is still 164.6 MB. Free memory was 125.3 MB in the beginning and 123.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,619 INFO L168 Benchmark]: RCFGBuilder took 801.04 ms. Allocated memory is still 164.6 MB. Free memory was 123.4 MB in the beginning and 135.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,620 INFO L168 Benchmark]: TraceAbstraction took 857224.83 ms. Allocated memory was 164.6 MB in the beginning and 287.3 MB in the end (delta: 122.7 MB). Free memory was 135.1 MB in the beginning and 101.7 MB in the end (delta: 33.3 MB). Peak memory consumption was 156.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:08:22,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 361.12 ms. Allocated memory is still 164.6 MB. Free memory was 138.6 MB in the beginning and 127.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 108.75 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 125.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.28 ms. Allocated memory is still 164.6 MB. Free memory was 125.3 MB in the beginning and 123.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 801.04 ms. Allocated memory is still 164.6 MB. Free memory was 123.4 MB in the beginning and 135.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 857224.83 ms. Allocated memory was 164.6 MB in the beginning and 287.3 MB in the end (delta: 122.7 MB). Free memory was 135.1 MB in the beginning and 101.7 MB in the end (delta: 33.3 MB). Peak memory consumption was 156.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22097.7ms, 276 PlacesBefore, 56 PlacesAfterwards, 295 TransitionsBefore, 56 TransitionsAfterwards, 1916 CoEnabledTransitionPairs, 8 FixpointIterations, 223 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 50 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 351 TotalNumberOfCompositions, 3741 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2263, positive: 2129, positive conditional: 0, positive unconditional: 2129, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1249, positive: 1218, positive conditional: 0, positive unconditional: 1218, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1249, positive: 1218, positive conditional: 0, positive unconditional: 1218, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 114, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2263, positive: 911, positive conditional: 0, positive unconditional: 911, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 1249, unknown conditional: 0, unknown unconditional: 1249] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 321 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 857049.4ms, OverallIterations: 69, TraceHistogramMax: 9, EmptinessCheckTime: 170.4ms, AutomataDifference: 46501.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22174.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2862 SDtfs, 3823 SDslu, 5210 SDs, 0 SdLazy, 1944 SolverSat, 370 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6430.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1369 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 359 ConstructedPredicates, 53 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 97172.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3315occurred in iteration=41, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3338.5ms AutomataMinimizationTime, 68 MinimizatonAttempts, 14184 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 886.7ms SsaConstructionTime, 149539.7ms SatisfiabilityAnalysisTime, 70496.5ms InterpolantComputationTime, 1308 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1240 ConstructedInterpolants, 497 QuantifiedInterpolants, 8633 SizeOfPredicates, 139 NumberOfNonLiveVariables, 12947 ConjunctsInSsa, 436 ConjunctsInUnsatCore, 68 InterpolantComputations, 21 PerfectInterpolantSequences, 1550/1905 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