/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 23:01:51,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 23:01:51,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 23:01:51,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 23:01:51,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 23:01:51,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 23:01:51,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 23:01:51,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 23:01:51,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 23:01:51,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 23:01:51,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 23:01:51,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 23:01:51,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 23:01:51,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 23:01:51,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 23:01:51,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 23:01:51,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 23:01:51,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 23:01:51,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 23:01:51,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 23:01:51,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 23:01:51,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 23:01:51,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 23:01:51,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 23:01:51,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 23:01:51,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 23:01:51,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 23:01:51,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 23:01:51,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 23:01:51,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 23:01:51,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 23:01:51,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 23:01:51,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 23:01:51,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 23:01:51,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 23:01:51,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 23:01:51,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 23:01:51,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 23:01:51,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 23:01:51,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 23:01:51,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 23:01:51,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-17 23:01:51,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 23:01:51,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 23:01:51,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 23:01:51,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 23:01:51,390 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 23:01:51,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 23:01:51,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 23:01:51,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 23:01:51,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 23:01:51,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 23:01:51,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 23:01:51,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 23:01:51,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 23:01:51,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 23:01:51,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 23:01:51,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 23:01:51,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:01:51,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-17 23:01:51,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 23:01:51,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 23:01:51,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 23:01:51,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 23:01:51,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 23:01:51,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 23:01:51,707 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 23:01:51,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2020-04-17 23:01:51,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563039cde/9eec342d6f1c4352b4915ea77e7d8478/FLAG132271e09 [2020-04-17 23:01:52,370 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 23:01:52,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2020-04-17 23:01:52,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563039cde/9eec342d6f1c4352b4915ea77e7d8478/FLAG132271e09 [2020-04-17 23:01:52,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563039cde/9eec342d6f1c4352b4915ea77e7d8478 [2020-04-17 23:01:52,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 23:01:52,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 23:01:52,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 23:01:52,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 23:01:52,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 23:01:52,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:01:52" (1/1) ... [2020-04-17 23:01:52,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:52, skipping insertion in model container [2020-04-17 23:01:52,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:01:52" (1/1) ... [2020-04-17 23:01:52,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 23:01:52,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 23:01:53,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:01:53,387 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 23:01:53,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:01:53,582 INFO L208 MainTranslator]: Completed translation [2020-04-17 23:01:53,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53 WrapperNode [2020-04-17 23:01:53,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 23:01:53,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 23:01:53,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 23:01:53,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 23:01:53,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 23:01:53,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 23:01:53,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 23:01:53,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 23:01:53,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... [2020-04-17 23:01:53,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 23:01:53,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 23:01:53,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 23:01:53,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 23:01:53,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-04-17 23:01:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-17 23:01:53,807 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-17 23:01:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-17 23:01:53,807 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-17 23:01:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 23:01:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 23:01:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 23:01:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 23:01:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-17 23:01:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 23:01:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 23:01:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 23:01:53,811 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 23:01:54,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 23:01:54,376 INFO L295 CfgBuilder]: Removed 26 assume(true) statements. [2020-04-17 23:01:54,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:01:54 BoogieIcfgContainer [2020-04-17 23:01:54,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 23:01:54,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 23:01:54,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 23:01:54,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 23:01:54,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 11:01:52" (1/3) ... [2020-04-17 23:01:54,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756687b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:01:54, skipping insertion in model container [2020-04-17 23:01:54,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:53" (2/3) ... [2020-04-17 23:01:54,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756687b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:01:54, skipping insertion in model container [2020-04-17 23:01:54,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:01:54" (3/3) ... [2020-04-17 23:01:54,393 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2020-04-17 23:01:54,404 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 23:01:54,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 23:01:54,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 23:01:54,414 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 23:01:54,449 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,449 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,449 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,449 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,450 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,450 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,464 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,464 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,465 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,465 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,465 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,465 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,466 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,466 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,466 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,466 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,467 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,467 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,467 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,467 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,467 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,468 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,468 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,468 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,468 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,468 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,469 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,469 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,469 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,469 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,469 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,470 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,471 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,471 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,471 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,471 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,472 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,472 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,472 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,472 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,472 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,473 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,473 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,473 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,473 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,474 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,474 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,474 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,474 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,474 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,475 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,475 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,475 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,475 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,476 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,476 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,476 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,476 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,476 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,477 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,477 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,477 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,477 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,478 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,479 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,479 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,479 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,479 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,479 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,480 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,480 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,480 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,480 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,480 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,481 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,481 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,481 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,482 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,482 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,482 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,482 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,482 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,483 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,484 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,484 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,484 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,484 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,485 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,485 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,485 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,485 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,485 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,486 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,486 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,486 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,486 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,487 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,487 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,487 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,487 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,487 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,488 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,488 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,488 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,488 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,489 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,489 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,489 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,489 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,489 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,490 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,490 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,490 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,490 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,491 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,491 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,491 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,491 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,491 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,492 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,492 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,492 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,492 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,496 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,496 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,496 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,496 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,497 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,497 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,497 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,497 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,497 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,498 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,498 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,498 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,498 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,498 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,499 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,500 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,500 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,500 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,515 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,516 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,516 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,516 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,517 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,518 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,518 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,518 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,518 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,518 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,519 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,519 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,519 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,519 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:54,541 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 23:01:54,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:01:54,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:01:54,561 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:01:54,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:01:54,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:01:54,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:01:54,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:01:54,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:01:54,581 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 145 transitions, 312 flow [2020-04-17 23:01:54,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 140 places, 145 transitions, 312 flow [2020-04-17 23:01:54,665 INFO L129 PetriNetUnfolder]: 11/145 cut-off events. [2020-04-17 23:01:54,665 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 23:01:54,678 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 145 events. 11/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 385 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-17 23:01:54,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 140 places, 145 transitions, 312 flow [2020-04-17 23:01:54,724 INFO L129 PetriNetUnfolder]: 11/145 cut-off events. [2020-04-17 23:01:54,724 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 23:01:54,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 145 events. 11/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 385 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-17 23:01:54,732 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6532 [2020-04-17 23:01:54,733 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:01:56,693 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-04-17 23:01:57,387 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-04-17 23:01:57,996 WARN L192 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-04-17 23:01:58,226 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-17 23:01:58,243 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7651 [2020-04-17 23:01:58,243 INFO L214 etLargeBlockEncoding]: Total number of compositions: 122 [2020-04-17 23:01:58,247 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 41 transitions, 104 flow [2020-04-17 23:01:58,272 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 360 states. [2020-04-17 23:01:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-04-17 23:01:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 23:01:58,281 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:58,282 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 23:01:58,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:58,289 INFO L82 PathProgramCache]: Analyzing trace with hash 475986746, now seen corresponding path program 1 times [2020-04-17 23:01:58,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:58,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706000471] [2020-04-17 23:01:58,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:58,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706000471] [2020-04-17 23:01:58,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:01:58,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:01:58,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128903001] [2020-04-17 23:01:58,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:01:58,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:01:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:01:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:01:58,598 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 3 states. [2020-04-17 23:01:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:01:58,686 INFO L93 Difference]: Finished difference Result 652 states and 1665 transitions. [2020-04-17 23:01:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:01:58,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 23:01:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:01:58,738 INFO L225 Difference]: With dead ends: 652 [2020-04-17 23:01:58,738 INFO L226 Difference]: Without dead ends: 630 [2020-04-17 23:01:58,743 INFO L678 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 [2020-04-17 23:01:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-04-17 23:01:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 462. [2020-04-17 23:01:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-04-17 23:01:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1240 transitions. [2020-04-17 23:01:58,847 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1240 transitions. Word has length 6 [2020-04-17 23:01:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:01:58,847 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 1240 transitions. [2020-04-17 23:01:58,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:01:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1240 transitions. [2020-04-17 23:01:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 23:01:58,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:58,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:01:58,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 929097400, now seen corresponding path program 1 times [2020-04-17 23:01:58,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:58,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703035764] [2020-04-17 23:01:58,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:58,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703035764] [2020-04-17 23:01:58,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:01:58,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:01:58,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320354704] [2020-04-17 23:01:58,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:01:58,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:01:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:01:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:01:58,953 INFO L87 Difference]: Start difference. First operand 462 states and 1240 transitions. Second operand 3 states. [2020-04-17 23:01:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:01:58,968 INFO L93 Difference]: Finished difference Result 561 states and 1452 transitions. [2020-04-17 23:01:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:01:58,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 23:01:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:01:58,973 INFO L225 Difference]: With dead ends: 561 [2020-04-17 23:01:58,973 INFO L226 Difference]: Without dead ends: 539 [2020-04-17 23:01:58,974 INFO L678 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 [2020-04-17 23:01:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-04-17 23:01:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 499. [2020-04-17 23:01:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-04-17 23:01:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1332 transitions. [2020-04-17 23:01:59,007 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1332 transitions. Word has length 9 [2020-04-17 23:01:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:01:59,008 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 1332 transitions. [2020-04-17 23:01:59,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:01:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1332 transitions. [2020-04-17 23:01:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 23:01:59,009 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:59,009 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:01:59,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:59,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1857688102, now seen corresponding path program 1 times [2020-04-17 23:01:59,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:59,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825718266] [2020-04-17 23:01:59,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:59,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825718266] [2020-04-17 23:01:59,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:01:59,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:01:59,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533576739] [2020-04-17 23:01:59,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:01:59,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:01:59,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:01:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:01:59,083 INFO L87 Difference]: Start difference. First operand 499 states and 1332 transitions. Second operand 3 states. [2020-04-17 23:01:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:01:59,099 INFO L93 Difference]: Finished difference Result 539 states and 1435 transitions. [2020-04-17 23:01:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:01:59,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 23:01:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:01:59,103 INFO L225 Difference]: With dead ends: 539 [2020-04-17 23:01:59,104 INFO L226 Difference]: Without dead ends: 539 [2020-04-17 23:01:59,104 INFO L678 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 [2020-04-17 23:01:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-04-17 23:01:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-04-17 23:01:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-04-17 23:01:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1435 transitions. [2020-04-17 23:01:59,140 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1435 transitions. Word has length 10 [2020-04-17 23:01:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:01:59,142 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 1435 transitions. [2020-04-17 23:01:59,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:01:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1435 transitions. [2020-04-17 23:01:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 23:01:59,144 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:59,145 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:01:59,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2118228877, now seen corresponding path program 1 times [2020-04-17 23:01:59,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:59,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203891724] [2020-04-17 23:01:59,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:59,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203891724] [2020-04-17 23:01:59,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923290273] [2020-04-17 23:01:59,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-17 23:01:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:59,340 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-17 23:01:59,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:01:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:59,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:01:59,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-17 23:01:59,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132611427] [2020-04-17 23:01:59,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 23:01:59,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:01:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 23:01:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 23:01:59,377 INFO L87 Difference]: Start difference. First operand 539 states and 1435 transitions. Second operand 7 states. [2020-04-17 23:01:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:01:59,513 INFO L93 Difference]: Finished difference Result 1015 states and 2609 transitions. [2020-04-17 23:01:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 23:01:59,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-17 23:01:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:01:59,520 INFO L225 Difference]: With dead ends: 1015 [2020-04-17 23:01:59,521 INFO L226 Difference]: Without dead ends: 1015 [2020-04-17 23:01:59,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 23:01:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-04-17 23:01:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 739. [2020-04-17 23:01:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-04-17 23:01:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1976 transitions. [2020-04-17 23:01:59,550 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1976 transitions. Word has length 14 [2020-04-17 23:01:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:01:59,550 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 1976 transitions. [2020-04-17 23:01:59,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 23:01:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1976 transitions. [2020-04-17 23:01:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:01:59,553 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:59,553 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:01:59,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:01:59,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1012308327, now seen corresponding path program 1 times [2020-04-17 23:01:59,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:59,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320449594] [2020-04-17 23:01:59,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:01:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:01:59,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320449594] [2020-04-17 23:01:59,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:01:59,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 23:01:59,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046135836] [2020-04-17 23:01:59,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:01:59,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:01:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:01:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:01:59,818 INFO L87 Difference]: Start difference. First operand 739 states and 1976 transitions. Second operand 4 states. [2020-04-17 23:01:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:01:59,870 INFO L93 Difference]: Finished difference Result 354 states and 799 transitions. [2020-04-17 23:01:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 23:01:59,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 23:01:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:01:59,873 INFO L225 Difference]: With dead ends: 354 [2020-04-17 23:01:59,873 INFO L226 Difference]: Without dead ends: 354 [2020-04-17 23:01:59,874 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:01:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-04-17 23:01:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 328. [2020-04-17 23:01:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-04-17 23:01:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 732 transitions. [2020-04-17 23:01:59,910 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 732 transitions. Word has length 17 [2020-04-17 23:01:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:01:59,910 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 732 transitions. [2020-04-17 23:01:59,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:01:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 732 transitions. [2020-04-17 23:01:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 23:01:59,916 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:01:59,916 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:01:59,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:01:59,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:01:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1241376286, now seen corresponding path program 1 times [2020-04-17 23:01:59,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:01:59,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478973531] [2020-04-17 23:01:59,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:01:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:00,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478973531] [2020-04-17 23:02:00,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:00,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 23:02:00,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009120767] [2020-04-17 23:02:00,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 23:02:00,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:00,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 23:02:00,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 23:02:00,025 INFO L87 Difference]: Start difference. First operand 328 states and 732 transitions. Second operand 5 states. [2020-04-17 23:02:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:00,096 INFO L93 Difference]: Finished difference Result 500 states and 1111 transitions. [2020-04-17 23:02:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 23:02:00,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 23:02:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:00,100 INFO L225 Difference]: With dead ends: 500 [2020-04-17 23:02:00,100 INFO L226 Difference]: Without dead ends: 500 [2020-04-17 23:02:00,100 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-17 23:02:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-04-17 23:02:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 373. [2020-04-17 23:02:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-04-17 23:02:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 837 transitions. [2020-04-17 23:02:00,112 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 837 transitions. Word has length 18 [2020-04-17 23:02:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:00,112 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 837 transitions. [2020-04-17 23:02:00,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 23:02:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 837 transitions. [2020-04-17 23:02:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-17 23:02:00,114 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:00,114 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:00,114 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:02:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash 624388862, now seen corresponding path program 1 times [2020-04-17 23:02:00,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:00,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277730332] [2020-04-17 23:02:00,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:00,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277730332] [2020-04-17 23:02:00,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:00,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-04-17 23:02:00,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618569855] [2020-04-17 23:02:00,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 23:02:00,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 23:02:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-04-17 23:02:00,600 INFO L87 Difference]: Start difference. First operand 373 states and 837 transitions. Second operand 12 states. [2020-04-17 23:02:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:01,398 INFO L93 Difference]: Finished difference Result 698 states and 1547 transitions. [2020-04-17 23:02:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 23:02:01,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-04-17 23:02:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:01,403 INFO L225 Difference]: With dead ends: 698 [2020-04-17 23:02:01,403 INFO L226 Difference]: Without dead ends: 698 [2020-04-17 23:02:01,403 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-04-17 23:02:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-04-17 23:02:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 524. [2020-04-17 23:02:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-04-17 23:02:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1213 transitions. [2020-04-17 23:02:01,419 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1213 transitions. Word has length 22 [2020-04-17 23:02:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:01,420 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 1213 transitions. [2020-04-17 23:02:01,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 23:02:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1213 transitions. [2020-04-17 23:02:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-17 23:02:01,421 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:01,422 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-17 23:02:01,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:02:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:01,422 INFO L82 PathProgramCache]: Analyzing trace with hash 752977068, now seen corresponding path program 2 times [2020-04-17 23:02:01,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:01,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634902766] [2020-04-17 23:02:01,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:01,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634902766] [2020-04-17 23:02:01,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903297447] [2020-04-17 23:02:01,524 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-04-17 23:02:01,623 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:02:01,624 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:01,625 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 23:02:01,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:01,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:01,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-17 23:02:01,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679245105] [2020-04-17 23:02:01,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-17 23:02:01,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:01,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-17 23:02:01,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-04-17 23:02:01,655 INFO L87 Difference]: Start difference. First operand 524 states and 1213 transitions. Second operand 9 states. [2020-04-17 23:02:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:01,739 INFO L93 Difference]: Finished difference Result 866 states and 1943 transitions. [2020-04-17 23:02:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 23:02:01,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-04-17 23:02:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:01,744 INFO L225 Difference]: With dead ends: 866 [2020-04-17 23:02:01,745 INFO L226 Difference]: Without dead ends: 866 [2020-04-17 23:02:01,745 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-17 23:02:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-04-17 23:02:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 616. [2020-04-17 23:02:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-04-17 23:02:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1417 transitions. [2020-04-17 23:02:01,766 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1417 transitions. Word has length 22 [2020-04-17 23:02:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:01,766 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 1417 transitions. [2020-04-17 23:02:01,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-17 23:02:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1417 transitions. [2020-04-17 23:02:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-17 23:02:01,768 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:01,768 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:01,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:01,981 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:02:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash 434974922, now seen corresponding path program 2 times [2020-04-17 23:02:01,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:01,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415226098] [2020-04-17 23:02:01,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:02,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415226098] [2020-04-17 23:02:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:02,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-04-17 23:02:02,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935653714] [2020-04-17 23:02:02,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 23:02:02,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:02,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 23:02:02,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-17 23:02:02,442 INFO L87 Difference]: Start difference. First operand 616 states and 1417 transitions. Second operand 12 states. [2020-04-17 23:02:03,029 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-17 23:02:03,207 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-04-17 23:02:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:03,483 INFO L93 Difference]: Finished difference Result 931 states and 2095 transitions. [2020-04-17 23:02:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 23:02:03,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-04-17 23:02:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:03,494 INFO L225 Difference]: With dead ends: 931 [2020-04-17 23:02:03,494 INFO L226 Difference]: Without dead ends: 931 [2020-04-17 23:02:03,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:02:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-04-17 23:02:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 602. [2020-04-17 23:02:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-04-17 23:02:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1380 transitions. [2020-04-17 23:02:03,514 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1380 transitions. Word has length 22 [2020-04-17 23:02:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:03,514 INFO L479 AbstractCegarLoop]: Abstraction has 602 states and 1380 transitions. [2020-04-17 23:02:03,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 23:02:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1380 transitions. [2020-04-17 23:02:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 23:02:03,516 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:03,516 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:03,516 INFO L427 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:02:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:03,517 INFO L82 PathProgramCache]: Analyzing trace with hash -333091595, now seen corresponding path program 1 times [2020-04-17 23:02:03,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:03,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514457843] [2020-04-17 23:02:03,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:02:03,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514457843] [2020-04-17 23:02:03,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841005697] [2020-04-17 23:02:03,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-04-17 23:02:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:03,795 INFO L264 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 23:02:03,797 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 23:02:03,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 23:02:03,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2020-04-17 23:02:03,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74117155] [2020-04-17 23:02:03,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 23:02:03,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:03,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 23:02:03,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-17 23:02:03,821 INFO L87 Difference]: Start difference. First operand 602 states and 1380 transitions. Second operand 6 states. [2020-04-17 23:02:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:03,908 INFO L93 Difference]: Finished difference Result 834 states and 1865 transitions. [2020-04-17 23:02:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 23:02:03,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-04-17 23:02:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:03,913 INFO L225 Difference]: With dead ends: 834 [2020-04-17 23:02:03,914 INFO L226 Difference]: Without dead ends: 834 [2020-04-17 23:02:03,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-04-17 23:02:03,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-04-17 23:02:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 630. [2020-04-17 23:02:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-04-17 23:02:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1456 transitions. [2020-04-17 23:02:03,933 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1456 transitions. Word has length 25 [2020-04-17 23:02:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:03,933 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 1456 transitions. [2020-04-17 23:02:03,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 23:02:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1456 transitions. [2020-04-17 23:02:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-17 23:02:03,935 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:03,935 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:04,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:04,139 INFO L427 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:02:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1736562886, now seen corresponding path program 1 times [2020-04-17 23:02:04,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410396058] [2020-04-17 23:02:04,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:02:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 23:02:04,234 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 23:02:04,234 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 23:02:04,235 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-17 23:02:04,235 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-17 23:02:04,236 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-17 23:02:04,243 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [557] [557] L3-->L977-1: Formula: (and (let ((.cse1 (mod t1Thread1of1ForFork0_~tmp~0_In2140241819 4294967296))) (let ((.cse0 (<= .cse1 2147483647))) (or (and .cse0 (= .cse1 |t1Thread1of1ForFork0_push_#in~x_Out2140241819|)) (and (not .cse0) (= (+ .cse1 (- 4294967296)) |t1Thread1of1ForFork0_push_#in~x_Out2140241819|))))) (= |~#arr~0.base_In2140241819| |t1Thread1of1ForFork0_push_#in~stack.base_Out2140241819|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out2140241819| |~#arr~0.offset_In2140241819|) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out2140241819 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_In2140241819|) (not (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out2140241819 0))) InVars {~#arr~0.offset=|~#arr~0.offset_In2140241819|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In2140241819, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_In2140241819|, ~#arr~0.base=|~#arr~0.base_In2140241819|} OutVars{~#arr~0.offset=|~#arr~0.offset_In2140241819|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out2140241819|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out2140241819, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out2140241819|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In2140241819, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out2140241819|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_In2140241819|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out2140241819|, ~#arr~0.base=|~#arr~0.base_In2140241819|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-04-17 23:02:04,248 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [558] [558] L977-2-->L980: Formula: (and (<= 0 (+ |t1Thread1of1ForFork0_#t~ret44_In1114064265| 2147483648)) (<= |t1Thread1of1ForFork0_#t~ret44_In1114064265| 2147483647) (= ~flag~0_Out1114064265 1) (not (= |t1Thread1of1ForFork0_#t~ret44_In1114064265| (- 1)))) InVars {t1Thread1of1ForFork0_#t~ret44=|t1Thread1of1ForFork0_#t~ret44_In1114064265|} OutVars{t1Thread1of1ForFork0_#t~ret44=|t1Thread1of1ForFork0_#t~ret44_Out1114064265|, ~flag~0=~flag~0_Out1114064265} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret44, ~flag~0] because there is no mapped edge [2020-04-17 23:02:04,253 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [569] [569] L992-4-->L987-6: Formula: (and (= (store |#pthreadsMutex_In1028891394| |~#m~0.base_In1028891394| (store (select |#pthreadsMutex_In1028891394| |~#m~0.base_In1028891394|) |~#m~0.offset_In1028891394| 0)) |#pthreadsMutex_Out1028891394|) (not (= |t2Thread1of1ForFork1_#t~ret47_In1028891394| (- 2))) (= (+ t2Thread1of1ForFork1_~i~1_In1028891394 1) t2Thread1of1ForFork1_~i~1_Out1028891394)) InVars {#pthreadsMutex=|#pthreadsMutex_In1028891394|, ~#m~0.base=|~#m~0.base_In1028891394|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_In1028891394|, ~#m~0.offset=|~#m~0.offset_In1028891394|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1028891394} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1028891394|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_Out1028891394|, ~#m~0.base=|~#m~0.base_In1028891394|, ~#m~0.offset=|~#m~0.offset_In1028891394|, t2Thread1of1ForFork1_#t~post45=|t2Thread1of1ForFork1_#t~post45_Out1028891394|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1028891394} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_#t~ret47, t2Thread1of1ForFork1_#t~post45, t2Thread1of1ForFork1_~i~1] because there is no mapped edge [2020-04-17 23:02:04,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 11:02:04 BasicIcfg [2020-04-17 23:02:04,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 23:02:04,326 INFO L168 Benchmark]: Toolchain (without parser) took 11691.37 ms. Allocated memory was 144.2 MB in the beginning and 319.3 MB in the end (delta: 175.1 MB). Free memory was 98.5 MB in the beginning and 183.2 MB in the end (delta: -84.6 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,327 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 933.08 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 96.6 MB in the beginning and 131.1 MB in the end (delta: -34.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.28 ms. Allocated memory is still 201.9 MB. Free memory was 131.1 MB in the beginning and 128.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,333 INFO L168 Benchmark]: Boogie Preprocessor took 38.34 ms. Allocated memory is still 201.9 MB. Free memory was 128.4 MB in the beginning and 126.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,334 INFO L168 Benchmark]: RCFGBuilder took 651.98 ms. Allocated memory is still 201.9 MB. Free memory was 126.3 MB in the beginning and 93.6 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,335 INFO L168 Benchmark]: TraceAbstraction took 9941.52 ms. Allocated memory was 201.9 MB in the beginning and 319.3 MB in the end (delta: 117.4 MB). Free memory was 92.9 MB in the beginning and 183.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-04-17 23:02:04,344 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 933.08 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 96.6 MB in the beginning and 131.1 MB in the end (delta: -34.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 106.28 ms. Allocated memory is still 201.9 MB. Free memory was 131.1 MB in the beginning and 128.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.34 ms. Allocated memory is still 201.9 MB. Free memory was 128.4 MB in the beginning and 126.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.98 ms. Allocated memory is still 201.9 MB. Free memory was 126.3 MB in the beginning and 93.6 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9941.52 ms. Allocated memory was 201.9 MB in the beginning and 319.3 MB in the end (delta: 117.4 MB). Free memory was 92.9 MB in the beginning and 183.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.6s, 140 ProgramPointsBefore, 41 ProgramPointsAfterwards, 145 TransitionsBefore, 41 TransitionsAfterwards, 6532 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 5 ChoiceCompositions, 3568 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7651 CheckedPairsTotal, 122 TotalNumberOfCompositions - CounterExampleResult [Line: 922]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L916] 0 static int top=0; [L917] 0 static unsigned int arr[(800)]; [L918] 0 pthread_mutex_t m; [L919] 0 _Bool flag=(0); [L1001] 0 pthread_t id1, id2; [L1003] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L970] 1 int i; [L971] 1 unsigned int tmp; [L972] 1 i=0 VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L972] COND TRUE 1 i<(800) [L975] 1 tmp = __VERIFIER_nondet_uint() [L942] COND FALSE 1 !(top==(800)) [L1004] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L986] 2 int i; [L987] 2 i=0 VAL [arr={3:0}, flag=0, m={2:0}, top=0] [L934] 1 return top; [L949] 1 stack[get_top()] = x [L926] 1 top++ [L952] 1 return 0; [L972] 1 i++ VAL [arr={3:0}, flag=1, m={2:0}, top=1] [L987] COND TRUE 2 i<(800) [L990] COND TRUE 2 \read(flag) [L934] 2 return top; [L956] COND FALSE 2 !(get_top()==0) [L930] 2 top-- [L934] 2 return top; VAL [arr={3:0}, flag=1, m={2:0}, top=0] [L964] EXPR 2 stack[get_top()] [L964] 2 return stack[get_top()]; [L987] COND TRUE 2 i<(800) [L990] COND TRUE 2 \read(flag) [L934] 2 return top; [L956] COND TRUE 2 get_top()==0 [L959] 2 return (-2); [L992] COND TRUE 2 !(pop(arr)!=(-2)) [L922] 2 __VERIFIER_error() VAL [arr={3:0}, flag=1, m={2:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 134 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 454 SDtfs, 759 SDslu, 1143 SDs, 0 SdLazy, 794 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=739occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1594 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 41992 SizeOfPredicates, 9 NumberOfNonLiveVariables, 516 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 10/40 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 proved your program to be incorrect! Received shutdown request...