/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:13:56,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:13:56,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:13:56,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:13:56,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:13:56,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:13:56,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:13:56,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:13:56,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:13:56,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:13:56,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:13:56,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:13:56,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:13:56,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:13:56,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:13:56,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:13:56,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:13:56,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:13:56,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:13:56,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:13:56,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:13:56,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:13:56,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:13:56,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:13:56,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 13:13:56,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 13:13:56,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 13:13:56,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 13:13:56,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 13:13:56,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 13:13:56,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 13:13:56,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 13:13:56,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 13:13:56,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:13:56,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:13:56,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:13:56,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:13:56,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:13:56,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:13:56,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:13:56,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:13:56,423 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:13:56,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:13:56,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:13:56,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:13:56,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:13:56,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:13:56,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:13:56,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:13:56,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:13:56,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:13:56,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:13:56,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:13:56,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:13:56,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:13:56,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:13:56,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:13:56,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:13:56,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:13:56,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:13:56,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:13:56,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:13:56,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:13:56,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:13:56,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:13:56,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:13:56,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:13:56,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:13:56,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:13:56,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:13:56,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:13:56,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:13:56,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-11 13:13:56,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6144385b/d0ae8aa76ff648018129a231687d7861/FLAG3f0f8f220 [2020-10-11 13:13:57,303 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:13:57,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-11 13:13:57,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6144385b/d0ae8aa76ff648018129a231687d7861/FLAG3f0f8f220 [2020-10-11 13:13:57,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6144385b/d0ae8aa76ff648018129a231687d7861 [2020-10-11 13:13:57,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:13:57,624 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:13:57,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:13:57,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:13:57,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:13:57,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:57" (1/1) ... [2020-10-11 13:13:57,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e19730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:57, skipping insertion in model container [2020-10-11 13:13:57,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:57" (1/1) ... [2020-10-11 13:13:57,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:13:57,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:13:58,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:13:58,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:13:58,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:13:58,250 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:13:58,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58 WrapperNode [2020-10-11 13:13:58,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:13:58,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:13:58,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:13:58,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:13:58,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:13:58,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:13:58,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:13:58,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:13:58,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (1/1) ... [2020-10-11 13:13:58,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:13:58,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:13:58,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:13:58,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:13:58,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (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 [2020-10-11 13:13:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 13:13:58,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-11 13:13:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-11 13:13:58,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 13:13:58,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 13:13:58,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:13:58,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:13:58,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:13:58,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:13:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:13:58,382 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:13:58,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:13:58,685 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-11 13:13:58,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:58 BoogieIcfgContainer [2020-10-11 13:13:58,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:13:58,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:13:58,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:13:58,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:13:58,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:13:57" (1/3) ... [2020-10-11 13:13:58,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:58, skipping insertion in model container [2020-10-11 13:13:58,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:58" (2/3) ... [2020-10-11 13:13:58,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d0102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:58, skipping insertion in model container [2020-10-11 13:13:58,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:58" (3/3) ... [2020-10-11 13:13:58,694 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-11 13:13:58,704 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:13:58,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:13:58,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 13:13:58,712 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:13:58,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:58,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 13:13:58,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:13:58,797 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:13:58,797 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:13:58,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:13:58,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:13:58,798 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:13:58,798 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:13:58,798 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:13:58,811 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:13:58,814 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-11 13:13:58,819 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-11 13:13:58,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-11 13:13:58,859 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-11 13:13:58,859 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 13:13:58,868 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-11 13:13:58,870 INFO L117 LiptonReduction]: Number of co-enabled transitions 756 [2020-10-11 13:13:59,721 INFO L132 LiptonReduction]: Checked pairs total: 2346 [2020-10-11 13:13:59,721 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-11 13:13:59,728 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions, 90 flow [2020-10-11 13:13:59,748 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-10-11 13:13:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-10-11 13:13:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 13:13:59,758 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:59,759 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-11 13:13:59,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:59,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2020-10-11 13:13:59,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:59,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573158838] [2020-10-11 13:13:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:59,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573158838] [2020-10-11 13:13:59,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:59,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:13:59,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985261330] [2020-10-11 13:13:59,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 13:13:59,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 13:13:59,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:13:59,962 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2020-10-11 13:13:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:59,988 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-10-11 13:13:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 13:13:59,990 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-11 13:13:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:14:00,011 INFO L225 Difference]: With dead ends: 197 [2020-10-11 13:14:00,012 INFO L226 Difference]: Without dead ends: 174 [2020-10-11 13:14:00,013 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:14:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-11 13:14:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-11 13:14:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-11 13:14:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2020-10-11 13:14:00,100 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2020-10-11 13:14:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:14:00,100 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2020-10-11 13:14:00,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 13:14:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-10-11 13:14:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:14:00,101 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:14:00,101 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:14:00,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:14:00,102 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:14:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:14:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2020-10-11 13:14:00,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:14:00,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171280479] [2020-10-11 13:14:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:14:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:14:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:14:00,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171280479] [2020-10-11 13:14:00,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:14:00,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:14:00,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136891013] [2020-10-11 13:14:00,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:14:00,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:14:00,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:14:00,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:14:00,178 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2020-10-11 13:14:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:14:00,204 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2020-10-11 13:14:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:14:00,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-11 13:14:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:14:00,206 INFO L225 Difference]: With dead ends: 189 [2020-10-11 13:14:00,207 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 13:14:00,207 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:14:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 13:14:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-10-11 13:14:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 13:14:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2020-10-11 13:14:00,218 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2020-10-11 13:14:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:14:00,219 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2020-10-11 13:14:00,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:14:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2020-10-11 13:14:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:14:00,220 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:14:00,220 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:14:00,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:14:00,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:14:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:14:00,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2020-10-11 13:14:00,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:14:00,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232777228] [2020-10-11 13:14:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:14:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:14:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:14:00,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232777228] [2020-10-11 13:14:00,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:14:00,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:14:00,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506407393] [2020-10-11 13:14:00,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:14:00,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:14:00,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:14:00,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:14:00,291 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2020-10-11 13:14:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:14:00,314 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-10-11 13:14:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:14:00,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 13:14:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:14:00,318 INFO L225 Difference]: With dead ends: 135 [2020-10-11 13:14:00,318 INFO L226 Difference]: Without dead ends: 96 [2020-10-11 13:14:00,319 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:14:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-11 13:14:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-11 13:14:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-11 13:14:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-10-11 13:14:00,331 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-10-11 13:14:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:14:00,332 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-10-11 13:14:00,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:14:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-10-11 13:14:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:14:00,334 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:14:00,334 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:14:00,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 13:14:00,335 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:14:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:14:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2020-10-11 13:14:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:14:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725972369] [2020-10-11 13:14:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:14:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:14:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:14:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725972369] [2020-10-11 13:14:00,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:14:00,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 13:14:00,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062756851] [2020-10-11 13:14:00,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:14:00,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:14:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:14:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:14:00,427 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-10-11 13:14:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:14:00,451 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-10-11 13:14:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:14:00,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 13:14:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:14:00,453 INFO L225 Difference]: With dead ends: 106 [2020-10-11 13:14:00,453 INFO L226 Difference]: Without dead ends: 82 [2020-10-11 13:14:00,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:14:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-11 13:14:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-11 13:14:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 13:14:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-11 13:14:00,461 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-10-11 13:14:00,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:14:00,462 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-11 13:14:00,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:14:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-11 13:14:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:14:00,463 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:14:00,463 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:14:00,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:14:00,464 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:14:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:14:00,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2020-10-11 13:14:00,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:14:00,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450977867] [2020-10-11 13:14:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:14:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:14:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:14:00,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450977867] [2020-10-11 13:14:00,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:14:00,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 13:14:00,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970367395] [2020-10-11 13:14:00,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:14:00,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:14:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:14:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:14:00,515 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-10-11 13:14:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:14:00,527 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-10-11 13:14:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:14:00,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 13:14:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:14:00,528 INFO L225 Difference]: With dead ends: 36 [2020-10-11 13:14:00,529 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 13:14:00,529 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:14:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 13:14:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 13:14:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 13:14:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 13:14:00,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-11 13:14:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:14:00,530 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 13:14:00,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:14:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 13:14:00,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 13:14:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:14:00,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:14:00 BasicIcfg [2020-10-11 13:14:00,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:14:00,539 INFO L168 Benchmark]: Toolchain (without parser) took 2914.84 ms. Allocated memory was 253.8 MB in the beginning and 358.6 MB in the end (delta: 104.9 MB). Free memory was 206.6 MB in the beginning and 237.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 73.7 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,541 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 253.8 MB. Free memory is still 227.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:14:00,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.39 ms. Allocated memory was 253.8 MB in the beginning and 319.8 MB in the end (delta: 66.1 MB). Free memory was 206.6 MB in the beginning and 277.8 MB in the end (delta: -71.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 319.8 MB. Free memory was 277.8 MB in the beginning and 275.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,543 INFO L168 Benchmark]: Boogie Preprocessor took 24.54 ms. Allocated memory is still 319.8 MB. Free memory was 275.3 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,544 INFO L168 Benchmark]: RCFGBuilder took 361.88 ms. Allocated memory is still 319.8 MB. Free memory was 272.8 MB in the beginning and 253.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,545 INFO L168 Benchmark]: TraceAbstraction took 1849.76 ms. Allocated memory was 319.8 MB in the beginning and 358.6 MB in the end (delta: 38.8 MB). Free memory was 253.4 MB in the beginning and 237.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:14:00,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 253.8 MB. Free memory is still 227.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 626.39 ms. Allocated memory was 253.8 MB in the beginning and 319.8 MB in the end (delta: 66.1 MB). Free memory was 206.6 MB in the beginning and 277.8 MB in the end (delta: -71.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 319.8 MB. Free memory was 277.8 MB in the beginning and 275.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.54 ms. Allocated memory is still 319.8 MB. Free memory was 275.3 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 361.88 ms. Allocated memory is still 319.8 MB. Free memory was 272.8 MB in the beginning and 253.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1849.76 ms. Allocated memory was 319.8 MB in the beginning and 358.6 MB in the end (delta: 38.8 MB). Free memory was 253.4 MB in the beginning and 237.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 488 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 179 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 61 PlacesBefore, 34 PlacesAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 34 TotalNumberOfCompositions, 2346 MoverChecksTotal - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 139 SDtfs, 60 SDslu, 60 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...