/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:39:57,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:39:57,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:39:57,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:39:57,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:39:57,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:39:57,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:39:57,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:39:57,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:39:57,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:39:57,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:39:57,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:39:57,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:39:57,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:39:57,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:39:57,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:39:57,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:39:57,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:39:57,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:39:57,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:39:57,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:39:57,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:39:57,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:39:57,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:39:57,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:39:57,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:39:57,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:39:57,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:39:57,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:39:57,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:39:57,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:39:57,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:39:57,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:39:57,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:39:57,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:39:57,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:39:57,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:39:57,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:39:57,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:39:57,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:39:57,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:39:57,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:39:57,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:39:57,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:39:57,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:39:57,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:39:57,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:39:57,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:39:57,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:39:57,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:39:57,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:39:57,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:39:57,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:39:57,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:39:57,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:39:57,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:39:57,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:39:57,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:39:57,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:39:57,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:39:57,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:39:57,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:39:57,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:39:57,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:39:57,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:39:57,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:39:57,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:39:57,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:39:57,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:39:57,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:39:57,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:39:57,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 11:39:57,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f1b4e16/397c6c3830964e86b23c0abe14ff03fb/FLAG080732b47 [2020-10-16 11:39:58,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:39:58,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 11:39:58,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f1b4e16/397c6c3830964e86b23c0abe14ff03fb/FLAG080732b47 [2020-10-16 11:39:58,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f1b4e16/397c6c3830964e86b23c0abe14ff03fb [2020-10-16 11:39:58,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:39:58,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:39:58,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:39:58,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:39:58,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:39:58,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:39:58" (1/1) ... [2020-10-16 11:39:58,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bed768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:58, skipping insertion in model container [2020-10-16 11:39:58,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:39:58" (1/1) ... [2020-10-16 11:39:58,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:39:58,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:39:59,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:39:59,342 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:39:59,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:39:59,572 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:39:59,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59 WrapperNode [2020-10-16 11:39:59,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:39:59,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:39:59,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:39:59,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:39:59,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:39:59,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:39:59,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:39:59,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:39:59,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... [2020-10-16 11:39:59,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:39:59,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:39:59,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:39:59,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:39:59,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:39:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 11:39:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 11:39:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 11:39:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 11:39:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:39:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:39:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:39:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:39:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 11:39:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 11:39:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:39:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:39:59,773 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:40:00,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:40:00,316 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-16 11:40:00,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:40:00 BoogieIcfgContainer [2020-10-16 11:40:00,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:40:00,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:40:00,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:40:00,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:40:00,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:39:58" (1/3) ... [2020-10-16 11:40:00,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddbdc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:40:00, skipping insertion in model container [2020-10-16 11:40:00,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:59" (2/3) ... [2020-10-16 11:40:00,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddbdc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:40:00, skipping insertion in model container [2020-10-16 11:40:00,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:40:00" (3/3) ... [2020-10-16 11:40:00,330 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-16 11:40:00,344 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:40:00,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:40:00,355 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:40:00,356 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:40:00,397 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,398 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,398 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,398 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,399 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,399 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,399 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,400 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,400 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,400 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,400 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,401 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,401 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,401 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,402 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,402 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,402 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,402 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,403 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,403 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,403 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,403 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,404 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,404 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,404 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,404 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,404 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,405 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,425 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,426 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,427 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,428 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,428 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,429 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,430 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,430 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,431 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,432 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,432 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,432 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,433 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,434 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,435 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,435 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,435 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,435 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,435 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,436 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,436 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,437 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,441 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,441 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,442 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,442 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,443 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,443 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,443 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,444 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,444 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,444 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,445 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,447 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,447 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,447 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,447 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,447 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,448 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,449 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,449 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,450 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,450 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,450 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,450 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,451 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,451 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,451 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,451 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,451 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,452 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,452 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,453 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,454 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,454 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,454 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,455 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,459 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,459 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,460 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,461 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,469 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,470 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,471 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,471 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,472 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,472 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,473 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,486 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,487 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,487 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,488 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,488 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,489 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,489 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,489 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,489 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,489 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,490 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,490 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,490 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,490 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,490 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,491 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,491 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,491 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,492 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,492 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,492 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,507 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,508 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,508 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,508 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,508 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,508 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,509 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,510 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,510 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,511 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,511 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,511 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,511 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,511 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:40:00,532 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 11:40:00,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:40:00,576 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:40:00,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:40:00,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:40:00,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:40:00,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:40:00,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:40:00,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:40:00,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:40:00,603 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:40:00,604 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-16 11:40:00,606 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-16 11:40:00,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-16 11:40:00,677 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-16 11:40:00,677 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 11:40:00,691 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 11:40:00,702 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-16 11:40:03,178 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-16 11:40:04,008 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-16 11:40:04,267 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-16 11:40:04,291 INFO L132 LiptonReduction]: Checked pairs total: 10135 [2020-10-16 11:40:04,291 INFO L134 LiptonReduction]: Total number of compositions: 129 [2020-10-16 11:40:04,299 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-10-16 11:40:04,325 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-10-16 11:40:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-16 11:40:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:40:04,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:04,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:40:04,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:04,344 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-10-16 11:40:04,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:04,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101592200] [2020-10-16 11:40:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:04,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101592200] [2020-10-16 11:40:04,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:40:04,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:40:04,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761376110] [2020-10-16 11:40:04,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:40:04,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:40:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:04,634 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-10-16 11:40:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:04,749 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-10-16 11:40:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:40:04,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 11:40:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:04,773 INFO L225 Difference]: With dead ends: 504 [2020-10-16 11:40:04,773 INFO L226 Difference]: Without dead ends: 460 [2020-10-16 11:40:04,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-16 11:40:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-10-16 11:40:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-16 11:40:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-10-16 11:40:04,867 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-10-16 11:40:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:04,868 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-10-16 11:40:04,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:40:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-10-16 11:40:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:40:04,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:04,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:04,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:40:04,870 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:04,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:04,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-10-16 11:40:04,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:04,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864873790] [2020-10-16 11:40:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:04,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864873790] [2020-10-16 11:40:04,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:40:04,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:40:04,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211418472] [2020-10-16 11:40:04,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:40:04,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:04,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:40:04,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:04,972 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-10-16 11:40:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:04,991 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-10-16 11:40:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:40:04,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:40:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:04,997 INFO L225 Difference]: With dead ends: 464 [2020-10-16 11:40:04,997 INFO L226 Difference]: Without dead ends: 464 [2020-10-16 11:40:04,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-16 11:40:05,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-16 11:40:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-16 11:40:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-10-16 11:40:05,061 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-10-16 11:40:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:05,062 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-10-16 11:40:05,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:40:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-10-16 11:40:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:40:05,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:05,067 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:05,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:40:05,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-10-16 11:40:05,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:05,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997322122] [2020-10-16 11:40:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:05,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997322122] [2020-10-16 11:40:05,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185377699] [2020-10-16 11:40:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 11:40:05,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:05,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:40:05,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 11:40:05,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901162315] [2020-10-16 11:40:05,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:40:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:40:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:40:05,403 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-10-16 11:40:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:05,521 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-10-16 11:40:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:40:05,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-16 11:40:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:05,529 INFO L225 Difference]: With dead ends: 866 [2020-10-16 11:40:05,529 INFO L226 Difference]: Without dead ends: 851 [2020-10-16 11:40:05,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:40:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-16 11:40:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-10-16 11:40:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-16 11:40:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-10-16 11:40:05,563 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-10-16 11:40:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:05,564 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-10-16 11:40:05,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:40:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-10-16 11:40:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:40:05,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:05,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:05,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 11:40:05,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-10-16 11:40:05,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:05,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808608237] [2020-10-16 11:40:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:05,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808608237] [2020-10-16 11:40:05,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:40:05,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:40:05,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102409493] [2020-10-16 11:40:05,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:40:05,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:05,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:40:05,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:05,829 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-10-16 11:40:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:05,851 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-10-16 11:40:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:40:05,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-16 11:40:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:05,854 INFO L225 Difference]: With dead ends: 304 [2020-10-16 11:40:05,854 INFO L226 Difference]: Without dead ends: 304 [2020-10-16 11:40:05,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-16 11:40:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-10-16 11:40:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-16 11:40:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-10-16 11:40:05,866 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-10-16 11:40:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:05,867 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-10-16 11:40:05,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:40:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-10-16 11:40:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:40:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:05,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:05,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:40:05,870 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-10-16 11:40:05,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:05,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672638148] [2020-10-16 11:40:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:05,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672638148] [2020-10-16 11:40:05,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:40:05,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:40:05,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339750766] [2020-10-16 11:40:05,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:40:05,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:05,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:40:05,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:05,920 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-10-16 11:40:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:05,957 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-10-16 11:40:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:40:05,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:40:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:05,961 INFO L225 Difference]: With dead ends: 372 [2020-10-16 11:40:05,961 INFO L226 Difference]: Without dead ends: 372 [2020-10-16 11:40:05,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:40:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-16 11:40:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-10-16 11:40:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-16 11:40:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-10-16 11:40:05,999 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-10-16 11:40:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:06,002 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-10-16 11:40:06,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:40:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-10-16 11:40:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 11:40:06,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:06,004 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 11:40:06,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:40:06,004 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 2 times [2020-10-16 11:40:06,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:06,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659191879] [2020-10-16 11:40:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:06,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659191879] [2020-10-16 11:40:06,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113704191] [2020-10-16 11:40:06,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:06,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:40:06,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:40:06,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:40:06,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:06,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:40:06,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-16 11:40:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80755764] [2020-10-16 11:40:06,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:40:06,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:40:06,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:40:06,245 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 9 states. [2020-10-16 11:40:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:06,337 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-10-16 11:40:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:40:06,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-16 11:40:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:06,341 INFO L225 Difference]: With dead ends: 542 [2020-10-16 11:40:06,342 INFO L226 Difference]: Without dead ends: 542 [2020-10-16 11:40:06,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:40:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-16 11:40:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-10-16 11:40:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-16 11:40:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-10-16 11:40:06,355 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-10-16 11:40:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:06,356 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-10-16 11:40:06,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:40:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-10-16 11:40:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:40:06,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:06,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:06,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:06,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-10-16 11:40:06,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:06,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854407394] [2020-10-16 11:40:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:07,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854407394] [2020-10-16 11:40:07,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:40:07,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 11:40:07,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938767668] [2020-10-16 11:40:07,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 11:40:07,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:07,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 11:40:07,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-16 11:40:07,101 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 14 states. [2020-10-16 11:40:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:08,345 INFO L93 Difference]: Finished difference Result 703 states and 1483 transitions. [2020-10-16 11:40:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 11:40:08,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-10-16 11:40:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:08,350 INFO L225 Difference]: With dead ends: 703 [2020-10-16 11:40:08,351 INFO L226 Difference]: Without dead ends: 631 [2020-10-16 11:40:08,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-16 11:40:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-16 11:40:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 422. [2020-10-16 11:40:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-16 11:40:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 927 transitions. [2020-10-16 11:40:08,366 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 927 transitions. Word has length 21 [2020-10-16 11:40:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:08,367 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 927 transitions. [2020-10-16 11:40:08,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 11:40:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 927 transitions. [2020-10-16 11:40:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 11:40:08,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:08,369 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-16 11:40:08,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:40:08,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:08,370 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 3 times [2020-10-16 11:40:08,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:08,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642361785] [2020-10-16 11:40:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:08,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642361785] [2020-10-16 11:40:08,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727268633] [2020-10-16 11:40:08,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:08,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 11:40:08,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:40:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:40:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:08,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:40:08,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-16 11:40:08,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930648603] [2020-10-16 11:40:08,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:40:08,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:08,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:40:08,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:40:08,719 INFO L87 Difference]: Start difference. First operand 422 states and 927 transitions. Second operand 11 states. [2020-10-16 11:40:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:08,845 INFO L93 Difference]: Finished difference Result 759 states and 1604 transitions. [2020-10-16 11:40:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 11:40:08,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-16 11:40:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:08,851 INFO L225 Difference]: With dead ends: 759 [2020-10-16 11:40:08,851 INFO L226 Difference]: Without dead ends: 759 [2020-10-16 11:40:08,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:40:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-16 11:40:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 499. [2020-10-16 11:40:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-16 11:40:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1096 transitions. [2020-10-16 11:40:08,873 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1096 transitions. Word has length 27 [2020-10-16 11:40:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:08,874 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 1096 transitions. [2020-10-16 11:40:08,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:40:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1096 transitions. [2020-10-16 11:40:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 11:40:08,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:08,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:09,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:09,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 2 times [2020-10-16 11:40:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:09,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187602867] [2020-10-16 11:40:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187602867] [2020-10-16 11:40:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606409275] [2020-10-16 11:40:09,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:09,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-16 11:40:09,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:40:09,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-16 11:40:09,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:09,736 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 11:40:09,737 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:40:09,767 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 11:40:09,773 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:40:09,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 11:40:10,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 11:40:10,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 11:40:10,273 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:10,628 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:11,216 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:15,155 INFO L545 ElimStorePlain]: Start of recursive call 2: 18 dim-0 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-16 11:40:15,169 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 11:40:15,260 INFO L545 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-16 11:40:16,135 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 120 [2020-10-16 11:40:16,138 INFO L625 ElimStorePlain]: treesize reduction 263, result has 59.3 percent of original size [2020-10-16 11:40:17,657 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-16 11:40:17,658 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:383 [2020-10-16 11:40:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:40:19,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 11:40:19,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-16 11:40:19,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925971394] [2020-10-16 11:40:19,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 11:40:19,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 11:40:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2020-10-16 11:40:19,310 INFO L87 Difference]: Start difference. First operand 499 states and 1096 transitions. Second operand 13 states. [2020-10-16 11:40:21,977 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-16 11:40:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:22,988 INFO L93 Difference]: Finished difference Result 850 states and 1830 transitions. [2020-10-16 11:40:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 11:40:22,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-16 11:40:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:22,994 INFO L225 Difference]: With dead ends: 850 [2020-10-16 11:40:22,994 INFO L226 Difference]: Without dead ends: 850 [2020-10-16 11:40:22,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 11:40:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-16 11:40:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 563. [2020-10-16 11:40:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-16 11:40:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1242 transitions. [2020-10-16 11:40:23,015 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1242 transitions. Word has length 28 [2020-10-16 11:40:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:23,015 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 1242 transitions. [2020-10-16 11:40:23,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 11:40:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1242 transitions. [2020-10-16 11:40:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 11:40:23,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:23,017 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:23,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:23,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:23,233 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 1 times [2020-10-16 11:40:23,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:23,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692689335] [2020-10-16 11:40:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:40:23,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692689335] [2020-10-16 11:40:23,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419715740] [2020-10-16 11:40:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:23,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:40:23,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:40:23,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:40:23,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:40:23,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891123378] [2020-10-16 11:40:23,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 11:40:23,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:23,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 11:40:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-16 11:40:23,438 INFO L87 Difference]: Start difference. First operand 563 states and 1242 transitions. Second operand 10 states. [2020-10-16 11:40:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:23,579 INFO L93 Difference]: Finished difference Result 912 states and 1935 transitions. [2020-10-16 11:40:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 11:40:23,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-16 11:40:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:23,585 INFO L225 Difference]: With dead ends: 912 [2020-10-16 11:40:23,585 INFO L226 Difference]: Without dead ends: 912 [2020-10-16 11:40:23,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:40:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-16 11:40:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 607. [2020-10-16 11:40:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-16 11:40:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1366 transitions. [2020-10-16 11:40:23,625 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1366 transitions. Word has length 31 [2020-10-16 11:40:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:23,625 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 1366 transitions. [2020-10-16 11:40:23,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 11:40:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1366 transitions. [2020-10-16 11:40:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-16 11:40:23,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:23,628 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-16 11:40:23,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 11:40:23,843 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 4 times [2020-10-16 11:40:23,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:23,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542176610] [2020-10-16 11:40:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:23,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542176610] [2020-10-16 11:40:23,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111966673] [2020-10-16 11:40:23,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:24,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:40:24,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:40:24,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:40:24,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:24,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:40:24,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-16 11:40:24,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118627421] [2020-10-16 11:40:24,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 11:40:24,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:40:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 11:40:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 11:40:24,086 INFO L87 Difference]: Start difference. First operand 607 states and 1366 transitions. Second operand 13 states. [2020-10-16 11:40:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:40:24,259 INFO L93 Difference]: Finished difference Result 984 states and 2121 transitions. [2020-10-16 11:40:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:40:24,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-16 11:40:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:40:24,265 INFO L225 Difference]: With dead ends: 984 [2020-10-16 11:40:24,266 INFO L226 Difference]: Without dead ends: 984 [2020-10-16 11:40:24,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:40:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-16 11:40:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 684. [2020-10-16 11:40:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-10-16 11:40:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1535 transitions. [2020-10-16 11:40:24,289 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1535 transitions. Word has length 34 [2020-10-16 11:40:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:40:24,290 INFO L481 AbstractCegarLoop]: Abstraction has 684 states and 1535 transitions. [2020-10-16 11:40:24,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 11:40:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1535 transitions. [2020-10-16 11:40:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-16 11:40:24,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:40:24,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:40:24,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:24,508 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:40:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:40:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1848776679, now seen corresponding path program 1 times [2020-10-16 11:40:24,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:40:24,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177382738] [2020-10-16 11:40:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:40:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:40:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177382738] [2020-10-16 11:40:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312247916] [2020-10-16 11:40:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:40:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:40:25,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-16 11:40:25,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:40:25,422 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 11:40:25,423 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:40:25,447 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 11:40:25,450 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:40:25,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 11:40:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 11:40:25,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 11:40:25,851 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:40:25,870 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 11:40:25,871 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:40:25,872 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 11:40:26,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 11:40:26,387 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 11:40:26,402 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 11:40:26,416 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 11:40:26,477 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:26,680 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:27,107 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:27,634 INFO L721 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:28,144 INFO L721 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:40:28,842 INFO L721 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:43:32,029 INFO L545 ElimStorePlain]: Start of recursive call 3: 40 dim-0 vars, End of recursive call: 40 dim-0 vars, and 1 xjuncts. [2020-10-16 11:43:38,562 WARN L193 SmtUtils]: Spent 6.53 s on a formula simplification. DAG size of input: 294 DAG size of output: 235 [2020-10-16 11:43:38,564 INFO L625 ElimStorePlain]: treesize reduction 276, result has 75.9 percent of original size [2020-10-16 11:43:41,908 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 35 dim-0 vars, and 1 xjuncts. [2020-10-16 11:43:41,909 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:759 [2020-10-16 11:43:45,376 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-16 11:43:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:43:45,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:43:45,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2020-10-16 11:43:45,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364803562] [2020-10-16 11:43:45,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-16 11:43:45,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:43:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-16 11:43:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2020-10-16 11:43:45,395 INFO L87 Difference]: Start difference. First operand 684 states and 1535 transitions. Second operand 37 states. [2020-10-16 11:43:46,766 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-16 11:43:47,099 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-16 11:43:47,469 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-16 11:43:47,690 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-16 11:43:48,006 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-16 11:43:48,223 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-16 11:43:48,937 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-16 11:43:52,271 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 254 DAG size of output: 252 [2020-10-16 11:43:52,518 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-16 11:43:52,977 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-16 11:43:53,682 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-16 11:43:54,072 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-16 11:43:54,516 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-16 11:43:55,036 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-16 11:43:55,523 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 11:43:56,299 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-16 11:43:57,973 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 277 [2020-10-16 11:43:58,276 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-16 11:43:58,871 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-16 11:43:59,328 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-16 11:43:59,824 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-16 11:44:00,332 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 11:44:00,807 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-16 11:44:01,181 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-16 11:44:01,598 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-16 11:44:02,050 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-16 11:44:02,517 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-16 11:44:02,923 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-16 11:44:03,257 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 11:44:03,660 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-16 11:44:04,149 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-16 11:44:04,464 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 11:44:06,680 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-16 11:44:07,123 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-16 11:44:07,910 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-16 11:44:08,176 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 11:44:08,476 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-16 11:44:09,012 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-16 11:44:09,329 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 11:44:09,725 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-16 11:44:10,496 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-16 11:44:11,132 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-16 11:44:12,737 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-16 11:44:13,583 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-16 11:44:13,793 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-16 11:44:14,171 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-16 11:44:14,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-16 11:44:15,156 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-16 11:44:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:15,356 INFO L93 Difference]: Finished difference Result 2296 states and 4900 transitions. [2020-10-16 11:44:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-16 11:44:15,357 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2020-10-16 11:44:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:15,368 INFO L225 Difference]: With dead ends: 2296 [2020-10-16 11:44:15,369 INFO L226 Difference]: Without dead ends: 2144 [2020-10-16 11:44:15,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=1350, Invalid=10422, Unknown=0, NotChecked=0, Total=11772 [2020-10-16 11:44:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-16 11:44:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 850. [2020-10-16 11:44:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-16 11:44:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-16 11:44:15,404 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 36 [2020-10-16 11:44:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:15,404 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-16 11:44:15,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-16 11:44:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-16 11:44:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-16 11:44:15,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:15,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:44:15,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:15,620 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133555, now seen corresponding path program 2 times [2020-10-16 11:44:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:15,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998816333] [2020-10-16 11:44:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:44:15,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998816333] [2020-10-16 11:44:15,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232362610] [2020-10-16 11:44:15,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:15,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:44:15,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:15,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 11:44:15,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:44:15,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:44:15,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 11:44:15,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253400694] [2020-10-16 11:44:15,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:44:15,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:15,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:44:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:44:15,935 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 12 states. [2020-10-16 11:44:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:16,169 INFO L93 Difference]: Finished difference Result 1531 states and 3311 transitions. [2020-10-16 11:44:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 11:44:16,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-16 11:44:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:16,179 INFO L225 Difference]: With dead ends: 1531 [2020-10-16 11:44:16,179 INFO L226 Difference]: Without dead ends: 1531 [2020-10-16 11:44:16,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 11:44:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-10-16 11:44:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 850. [2020-10-16 11:44:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-16 11:44:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-16 11:44:16,204 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 38 [2020-10-16 11:44:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:16,205 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-16 11:44:16,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:44:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-16 11:44:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-16 11:44:16,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:16,210 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-16 11:44:16,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 11:44:16,425 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1525277201, now seen corresponding path program 5 times [2020-10-16 11:44:16,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:16,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233517606] [2020-10-16 11:44:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:44:16,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233517606] [2020-10-16 11:44:16,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187341621] [2020-10-16 11:44:16,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:16,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-16 11:44:16,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:16,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 11:44:16,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:44:16,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 11:44:16,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-16 11:44:16,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999648780] [2020-10-16 11:44:16,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 11:44:16,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:16,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 11:44:16,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:44:16,732 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 8 states. [2020-10-16 11:44:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:16,787 INFO L93 Difference]: Finished difference Result 1901 states and 4130 transitions. [2020-10-16 11:44:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 11:44:16,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-16 11:44:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:16,795 INFO L225 Difference]: With dead ends: 1901 [2020-10-16 11:44:16,795 INFO L226 Difference]: Without dead ends: 1151 [2020-10-16 11:44:16,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:44:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-16 11:44:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 919. [2020-10-16 11:44:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-10-16 11:44:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1913 transitions. [2020-10-16 11:44:16,821 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1913 transitions. Word has length 41 [2020-10-16 11:44:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:16,821 INFO L481 AbstractCegarLoop]: Abstraction has 919 states and 1913 transitions. [2020-10-16 11:44:16,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 11:44:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1913 transitions. [2020-10-16 11:44:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 11:44:16,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:16,824 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:44:17,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:17,038 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1282653762, now seen corresponding path program 3 times [2020-10-16 11:44:17,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:17,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145754578] [2020-10-16 11:44:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 11:44:17,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145754578] [2020-10-16 11:44:17,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424378812] [2020-10-16 11:44:17,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:17,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 11:44:17,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:44:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 11:44:17,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:44:17,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-16 11:44:17,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589374676] [2020-10-16 11:44:17,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:44:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:44:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:44:17,304 INFO L87 Difference]: Start difference. First operand 919 states and 1913 transitions. Second operand 12 states. [2020-10-16 11:44:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:17,504 INFO L93 Difference]: Finished difference Result 1454 states and 2944 transitions. [2020-10-16 11:44:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 11:44:17,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-16 11:44:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:17,510 INFO L225 Difference]: With dead ends: 1454 [2020-10-16 11:44:17,510 INFO L226 Difference]: Without dead ends: 1127 [2020-10-16 11:44:17,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:44:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-16 11:44:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 882. [2020-10-16 11:44:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-16 11:44:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1819 transitions. [2020-10-16 11:44:17,530 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1819 transitions. Word has length 45 [2020-10-16 11:44:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:17,530 INFO L481 AbstractCegarLoop]: Abstraction has 882 states and 1819 transitions. [2020-10-16 11:44:17,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:44:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1819 transitions. [2020-10-16 11:44:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 11:44:17,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:17,532 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:44:17,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 11:44:17,748 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:17,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2015805632, now seen corresponding path program 4 times [2020-10-16 11:44:17,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:17,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771189360] [2020-10-16 11:44:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 11:44:17,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771189360] [2020-10-16 11:44:17,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9098240] [2020-10-16 11:44:17,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:17,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:44:17,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:17,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:44:17,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 11:44:17,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:44:17,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 11:44:17,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837254381] [2020-10-16 11:44:17,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:44:17,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:44:17,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:44:17,998 INFO L87 Difference]: Start difference. First operand 882 states and 1819 transitions. Second operand 12 states. [2020-10-16 11:44:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:18,182 INFO L93 Difference]: Finished difference Result 1257 states and 2501 transitions. [2020-10-16 11:44:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:44:18,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-16 11:44:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:18,187 INFO L225 Difference]: With dead ends: 1257 [2020-10-16 11:44:18,188 INFO L226 Difference]: Without dead ends: 1177 [2020-10-16 11:44:18,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-16 11:44:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-16 11:44:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 778. [2020-10-16 11:44:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-16 11:44:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-16 11:44:18,227 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-16 11:44:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:18,227 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-16 11:44:18,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:44:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-16 11:44:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 11:44:18,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:18,229 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:44:18,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 11:44:18,445 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:18,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1958720896, now seen corresponding path program 5 times [2020-10-16 11:44:18,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:18,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419075435] [2020-10-16 11:44:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:44:18,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419075435] [2020-10-16 11:44:18,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598370685] [2020-10-16 11:44:18,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:18,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 11:44:18,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:18,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 11:44:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:44:18,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:44:18,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-16 11:44:18,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426598311] [2020-10-16 11:44:18,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 11:44:18,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 11:44:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-16 11:44:18,750 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 14 states. [2020-10-16 11:44:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:44:19,016 INFO L93 Difference]: Finished difference Result 1374 states and 2723 transitions. [2020-10-16 11:44:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 11:44:19,017 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-16 11:44:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:44:19,024 INFO L225 Difference]: With dead ends: 1374 [2020-10-16 11:44:19,024 INFO L226 Difference]: Without dead ends: 1364 [2020-10-16 11:44:19,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:44:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-16 11:44:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 778. [2020-10-16 11:44:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-16 11:44:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-16 11:44:19,044 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-16 11:44:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:44:19,044 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-16 11:44:19,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 11:44:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-16 11:44:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-16 11:44:19,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:44:19,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:44:19,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 11:44:19,260 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:44:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:44:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash 579552405, now seen corresponding path program 2 times [2020-10-16 11:44:19,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:44:19,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628606139] [2020-10-16 11:44:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:44:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:44:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:44:20,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628606139] [2020-10-16 11:44:20,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102315711] [2020-10-16 11:44:20,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:44:20,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:44:20,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:44:20,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-16 11:44:20,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:44:20,837 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 11:44:20,838 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:44:20,874 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 11:44:20,876 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:44:20,876 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 11:44:21,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 11:44:21,435 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 11:44:21,436 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:44:21,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 11:44:21,462 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:44:21,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 11:44:21,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 11:44:21,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 11:44:21,967 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 11:44:21,993 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 11:44:21,996 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 11:44:21,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 11:44:22,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 11:44:22,854 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 11:44:22,882 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 11:44:23,003 INFO L545 ElimStorePlain]: Start of recursive call 2: 9 dim-0 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-16 11:44:23,012 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 11:44:23,021 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 11:44:23,299 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2020-10-16 11:44:23,300 INFO L625 ElimStorePlain]: treesize reduction 101, result has 65.8 percent of original size [2020-10-16 11:44:23,331 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-16 11:44:23,331 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:194 [2020-10-16 11:44:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:44:23,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:44:23,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2020-10-16 11:44:23,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011738768] [2020-10-16 11:44:23,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-16 11:44:23,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:44:23,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-16 11:44:23,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 11:44:23,659 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 49 states. Received shutdown request... [2020-10-16 11:44:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:44:24,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:44:24,024 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:44:24,029 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:44:24,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:44:24 BasicIcfg [2020-10-16 11:44:24,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:44:24,030 INFO L168 Benchmark]: Toolchain (without parser) took 265317.14 ms. Allocated memory was 138.9 MB in the beginning and 310.4 MB in the end (delta: 171.4 MB). Free memory was 100.2 MB in the beginning and 64.6 MB in the end (delta: 35.6 MB). Peak memory consumption was 207.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,031 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:44:24,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.20 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 134.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.85 ms. Allocated memory is still 203.4 MB. Free memory was 134.2 MB in the beginning and 131.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,032 INFO L168 Benchmark]: Boogie Preprocessor took 39.50 ms. Allocated memory is still 203.4 MB. Free memory was 131.5 MB in the beginning and 129.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,032 INFO L168 Benchmark]: RCFGBuilder took 634.53 ms. Allocated memory is still 203.4 MB. Free memory was 129.4 MB in the beginning and 96.2 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,033 INFO L168 Benchmark]: TraceAbstraction took 263708.33 ms. Allocated memory was 203.4 MB in the beginning and 310.4 MB in the end (delta: 107.0 MB). Free memory was 96.2 MB in the beginning and 64.6 MB in the end (delta: 31.6 MB). Peak memory consumption was 138.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:44:24,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.20 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 134.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.85 ms. Allocated memory is still 203.4 MB. Free memory was 134.2 MB in the beginning and 131.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.50 ms. Allocated memory is still 203.4 MB. Free memory was 131.5 MB in the beginning and 129.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 634.53 ms. Allocated memory is still 203.4 MB. Free memory was 129.4 MB in the beginning and 96.2 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263708.33 ms. Allocated memory was 203.4 MB in the beginning and 310.4 MB in the end (delta: 107.0 MB). Free memory was 96.2 MB in the beginning and 64.6 MB in the end (delta: 31.6 MB). Peak memory consumption was 138.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3384 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 230 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 137 PlacesBefore, 40 PlacesAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 129 TotalNumberOfCompositions, 10135 MoverChecksTotal - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (778states) and FLOYD_HOARE automaton (currently 3 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 49 known predicates. - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (778states) and FLOYD_HOARE automaton (currently 3 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 49 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 263.4s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 986 SDtfs, 3258 SDslu, 5572 SDs, 0 SdLazy, 4754 SolverSat, 479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 802 GetRequests, 433 SyntacticMatches, 5 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5311 ImplicationChecksByTransitivity, 35.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 5371 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 217.0s InterpolantComputationTime, 978 NumberOfCodeBlocks, 971 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 947 ConstructedInterpolants, 3 QuantifiedInterpolants, 396652 SizeOfPredicates, 132 NumberOfNonLiveVariables, 3498 ConjunctsInSsa, 269 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 240/914 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