/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/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:14:26,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:14:26,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:14:26,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:14:26,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:14:26,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:14:26,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:14:26,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:14:26,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:14:26,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:14:26,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:14:26,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:14:26,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:14:26,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:14:26,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:14:26,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:14:26,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:14:26,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:14:26,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:14:26,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:14:26,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:14:26,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:14:26,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:14:26,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:14:26,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:14:26,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:14:26,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:14:26,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:14:26,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:14:26,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:14:26,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:14:26,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:14:26,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:14:26,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:14:26,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:14:26,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:14:26,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:14:26,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:14:26,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:14:26,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:14:26,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:14:26,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:14:26,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:14:26,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:14:26,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:14:26,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:14:26,344 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:14:26,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:14:26,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:14:26,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:14:26,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:14:26,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:14:26,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:14:26,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:14:26,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:14:26,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:14:26,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:14:26,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:14:26,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:14:26,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:14:26,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:14:26,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:14:26,348 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:14:26,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:14:26,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:14:26,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:14:26,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:14:26,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:14:26,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:14:26,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:14:26,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:14:26,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:14:26,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-10-09 18:14:26,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579a219e5/8e01c3b4b6cd40f7a3dd4bf66636dd34/FLAG696308e87 [2020-10-09 18:14:27,224 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:14:27,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-10-09 18:14:27,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579a219e5/8e01c3b4b6cd40f7a3dd4bf66636dd34/FLAG696308e87 [2020-10-09 18:14:27,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579a219e5/8e01c3b4b6cd40f7a3dd4bf66636dd34 [2020-10-09 18:14:27,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:14:27,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:14:27,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:27,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:14:27,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:14:27,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:27" (1/1) ... [2020-10-09 18:14:27,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463ba846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:27, skipping insertion in model container [2020-10-09 18:14:27,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:27" (1/1) ... [2020-10-09 18:14:27,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:14:27,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:14:28,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:28,050 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:14:28,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:28,216 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:14:28,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28 WrapperNode [2020-10-09 18:14:28,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:28,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:28,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:14:28,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:14:28,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:28,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:14:28,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:14:28,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:14:28,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (1/1) ... [2020-10-09 18:14:28,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:14:28,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:14:28,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:14:28,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:14:28,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (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 [2020-10-09 18:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:14:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:14:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:14:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:14:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:14:28,420 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:14:28,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:14:28,809 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:14:28,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:28 BoogieIcfgContainer [2020-10-09 18:14:28,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:14:28,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:14:28,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:14:28,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:14:28,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:14:27" (1/3) ... [2020-10-09 18:14:28,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de79cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:28, skipping insertion in model container [2020-10-09 18:14:28,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:28" (2/3) ... [2020-10-09 18:14:28,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de79cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:28, skipping insertion in model container [2020-10-09 18:14:28,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:28" (3/3) ... [2020-10-09 18:14:28,820 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2020-10-09 18:14:28,832 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:14:28,839 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:14:28,840 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:14:28,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,867 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,868 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,875 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,884 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,884 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,885 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,885 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:28,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 18:14:28,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:14:28,931 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:14:28,931 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:14:28,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:14:28,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:14:28,932 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:14:28,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:14:28,932 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:14:28,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 18:14:28,990 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-09 18:14:28,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:28,996 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 18:14:28,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 18:14:29,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-09 18:14:29,021 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-09 18:14:29,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:29,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:29,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:29,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 1 times [2020-10-09 18:14:29,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:29,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541480103] [2020-10-09 18:14:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:29,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:29,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:29,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:29,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:29,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541480103] [2020-10-09 18:14:29,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:29,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:29,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845393832] [2020-10-09 18:14:29,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:29,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:29,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:29,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:29,566 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-09 18:14:29,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand 8 states. [2020-10-09 18:14:29,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:29,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-09 18:14:29,571 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:29,705 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2020-10-09 18:14:29,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:29,706 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 79 events. 3/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2020-10-09 18:14:29,708 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 6 selfloop transitions, 2 changer transitions 11/66 dead transitions. [2020-10-09 18:14:29,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 177 flow [2020-10-09 18:14:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2020-10-09 18:14:29,728 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8935837245696401 [2020-10-09 18:14:29,729 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2020-10-09 18:14:29,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2020-10-09 18:14:29,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:29,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2020-10-09 18:14:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:29,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:29,752 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:29,754 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 9 states and 571 transitions. [2020-10-09 18:14:29,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 177 flow [2020-10-09 18:14:29,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 18:14:29,764 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 136 flow [2020-10-09 18:14:29,767 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-09 18:14:29,768 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-09 18:14:29,769 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 136 flow [2020-10-09 18:14:29,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:29,769 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:29,769 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:29,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:14:29,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:29,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1160241260, now seen corresponding path program 1 times [2020-10-09 18:14:29,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:29,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530620408] [2020-10-09 18:14:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:30,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:30,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:30,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:30,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:30,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530620408] [2020-10-09 18:14:30,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:30,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:30,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954186029] [2020-10-09 18:14:30,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:30,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:30,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:30,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:30,365 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-09 18:14:30,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 136 flow. Second operand 8 states. [2020-10-09 18:14:30,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:30,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-09 18:14:30,366 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:30,476 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2020-10-09 18:14:30,477 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 18:14:30,478 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 78 events. 3/78 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 117. Up to 7 conditions per place. [2020-10-09 18:14:30,479 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 6 selfloop transitions, 2 changer transitions 10/65 dead transitions. [2020-10-09 18:14:30,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 210 flow [2020-10-09 18:14:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 569 transitions. [2020-10-09 18:14:30,484 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904538341158059 [2020-10-09 18:14:30,484 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 569 transitions. [2020-10-09 18:14:30,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 569 transitions. [2020-10-09 18:14:30,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:30,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 569 transitions. [2020-10-09 18:14:30,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:30,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:30,489 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:30,489 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 136 flow. Second operand 9 states and 569 transitions. [2020-10-09 18:14:30,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 210 flow [2020-10-09 18:14:30,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 178 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:30,493 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 140 flow [2020-10-09 18:14:30,494 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-09 18:14:30,495 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-09 18:14:30,495 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 140 flow [2020-10-09 18:14:30,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:30,495 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:30,495 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:30,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:14:30,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1372231315, now seen corresponding path program 1 times [2020-10-09 18:14:30,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:30,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256094106] [2020-10-09 18:14:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:30,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:30,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:30,778 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:30,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:30,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256094106] [2020-10-09 18:14:30,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:30,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:30,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571965668] [2020-10-09 18:14:30,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:30,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:30,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:30,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:30,995 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-09 18:14:30,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 140 flow. Second operand 8 states. [2020-10-09 18:14:30,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:30,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-09 18:14:30,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:31,087 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2020-10-09 18:14:31,087 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2020-10-09 18:14:31,088 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 78 events. 3/78 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 120. Up to 7 conditions per place. [2020-10-09 18:14:31,088 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 6 selfloop transitions, 2 changer transitions 10/65 dead transitions. [2020-10-09 18:14:31,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 216 flow [2020-10-09 18:14:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 569 transitions. [2020-10-09 18:14:31,092 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904538341158059 [2020-10-09 18:14:31,092 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 569 transitions. [2020-10-09 18:14:31,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 569 transitions. [2020-10-09 18:14:31,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:31,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 569 transitions. [2020-10-09 18:14:31,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:31,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:31,097 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:31,097 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 140 flow. Second operand 9 states and 569 transitions. [2020-10-09 18:14:31,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 216 flow [2020-10-09 18:14:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 184 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:31,101 INFO L241 Difference]: Finished difference. Result has 79 places, 55 transitions, 144 flow [2020-10-09 18:14:31,102 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=144, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2020-10-09 18:14:31,102 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2020-10-09 18:14:31,102 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 144 flow [2020-10-09 18:14:31,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:31,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:31,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:31,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:14:31,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:31,316 INFO L82 PathProgramCache]: Analyzing trace with hash -699810066, now seen corresponding path program 1 times [2020-10-09 18:14:31,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:31,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463257361] [2020-10-09 18:14:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:31,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:31,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:31,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:31,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:31,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463257361] [2020-10-09 18:14:31,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:31,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:31,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301423854] [2020-10-09 18:14:31,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:31,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:31,788 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:14:31,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 144 flow. Second operand 9 states. [2020-10-09 18:14:31,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:31,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:14:31,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:31,921 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2020-10-09 18:14:31,921 INFO L130 PetriNetUnfolder]: For 34/41 co-relation queries the response was YES. [2020-10-09 18:14:31,922 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 76 events. 4/76 cut-off events. For 34/41 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 131. Up to 7 conditions per place. [2020-10-09 18:14:31,923 INFO L132 encePairwiseOnDemand]: 63/71 looper letters, 6 selfloop transitions, 4 changer transitions 12/67 dead transitions. [2020-10-09 18:14:31,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 67 transitions, 243 flow [2020-10-09 18:14:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 614 transitions. [2020-10-09 18:14:31,926 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8647887323943662 [2020-10-09 18:14:31,926 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 614 transitions. [2020-10-09 18:14:31,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 614 transitions. [2020-10-09 18:14:31,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:31,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 614 transitions. [2020-10-09 18:14:31,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:31,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:31,931 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:31,931 INFO L185 Difference]: Start difference. First operand has 79 places, 55 transitions, 144 flow. Second operand 10 states and 614 transitions. [2020-10-09 18:14:31,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 67 transitions, 243 flow [2020-10-09 18:14:31,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 209 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:31,934 INFO L241 Difference]: Finished difference. Result has 82 places, 55 transitions, 158 flow [2020-10-09 18:14:31,935 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=158, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2020-10-09 18:14:31,935 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2020-10-09 18:14:31,935 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 158 flow [2020-10-09 18:14:31,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:31,936 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:31,936 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:32,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:14:32,156 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 418548482, now seen corresponding path program 1 times [2020-10-09 18:14:32,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:32,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346588701] [2020-10-09 18:14:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:32,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:32,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:32,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:32,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:32,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346588701] [2020-10-09 18:14:32,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:32,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818667810] [2020-10-09 18:14:32,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:32,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:32,542 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:14:32,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 158 flow. Second operand 9 states. [2020-10-09 18:14:32,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:32,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:14:32,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:32,676 INFO L129 PetriNetUnfolder]: 4/81 cut-off events. [2020-10-09 18:14:32,676 INFO L130 PetriNetUnfolder]: For 61/73 co-relation queries the response was YES. [2020-10-09 18:14:32,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 4/81 cut-off events. For 61/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 3/83 useless extension candidates. Maximal degree in co-relation 151. Up to 7 conditions per place. [2020-10-09 18:14:32,677 INFO L132 encePairwiseOnDemand]: 63/71 looper letters, 6 selfloop transitions, 4 changer transitions 12/67 dead transitions. [2020-10-09 18:14:32,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 67 transitions, 263 flow [2020-10-09 18:14:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 614 transitions. [2020-10-09 18:14:32,683 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8647887323943662 [2020-10-09 18:14:32,684 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 614 transitions. [2020-10-09 18:14:32,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 614 transitions. [2020-10-09 18:14:32,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:32,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 614 transitions. [2020-10-09 18:14:32,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:32,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:32,688 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:32,688 INFO L185 Difference]: Start difference. First operand has 82 places, 55 transitions, 158 flow. Second operand 10 states and 614 transitions. [2020-10-09 18:14:32,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 67 transitions, 263 flow [2020-10-09 18:14:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 213 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:14:32,691 INFO L241 Difference]: Finished difference. Result has 83 places, 55 transitions, 162 flow [2020-10-09 18:14:32,692 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2020-10-09 18:14:32,692 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2020-10-09 18:14:32,692 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 162 flow [2020-10-09 18:14:32,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:32,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:32,693 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:32,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:14:32,913 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1916680376, now seen corresponding path program 1 times [2020-10-09 18:14:32,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:32,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10750948] [2020-10-09 18:14:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:32,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:32,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:32,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:33,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:33,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10750948] [2020-10-09 18:14:33,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:33,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:33,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58179788] [2020-10-09 18:14:33,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:33,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:33,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:33,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:33,240 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:14:33,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 162 flow. Second operand 9 states. [2020-10-09 18:14:33,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:33,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:14:33,244 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:33,350 INFO L129 PetriNetUnfolder]: 4/61 cut-off events. [2020-10-09 18:14:33,350 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2020-10-09 18:14:33,351 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 61 events. 4/61 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 114. Up to 5 conditions per place. [2020-10-09 18:14:33,351 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-09 18:14:33,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 60 transitions, 218 flow [2020-10-09 18:14:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 608 transitions. [2020-10-09 18:14:33,358 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.856338028169014 [2020-10-09 18:14:33,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 608 transitions. [2020-10-09 18:14:33,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 608 transitions. [2020-10-09 18:14:33,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:33,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 608 transitions. [2020-10-09 18:14:33,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:33,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:33,362 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:33,362 INFO L185 Difference]: Start difference. First operand has 83 places, 55 transitions, 162 flow. Second operand 10 states and 608 transitions. [2020-10-09 18:14:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 60 transitions, 218 flow [2020-10-09 18:14:33,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 178 flow, removed 14 selfloop flow, removed 9 redundant places. [2020-10-09 18:14:33,365 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-09 18:14:33,365 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-09 18:14:33,365 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2020-10-09 18:14:33,365 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-09 18:14:33,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:33,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:14:33,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:14:33 BasicIcfg [2020-10-09 18:14:33,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:14:33,588 INFO L168 Benchmark]: Toolchain (without parser) took 6073.47 ms. Allocated memory was 244.8 MB in the beginning and 427.3 MB in the end (delta: 182.5 MB). Free memory was 200.8 MB in the beginning and 338.2 MB in the end (delta: -137.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:33,589 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 244.8 MB. Free memory is still 221.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:14:33,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.94 ms. Allocated memory was 244.8 MB in the beginning and 294.6 MB in the end (delta: 49.8 MB). Free memory was 200.8 MB in the beginning and 247.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:33,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.70 ms. Allocated memory is still 294.6 MB. Free memory is still 247.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:14:33,591 INFO L168 Benchmark]: Boogie Preprocessor took 40.42 ms. Allocated memory is still 294.6 MB. Free memory was 247.5 MB in the beginning and 245.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:33,592 INFO L168 Benchmark]: RCFGBuilder took 466.04 ms. Allocated memory is still 294.6 MB. Free memory was 245.0 MB in the beginning and 223.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:33,593 INFO L168 Benchmark]: TraceAbstraction took 4771.67 ms. Allocated memory was 294.6 MB in the beginning and 427.3 MB in the end (delta: 132.6 MB). Free memory was 220.6 MB in the beginning and 338.2 MB in the end (delta: -117.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:33,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 244.8 MB. Free memory is still 221.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 702.94 ms. Allocated memory was 244.8 MB in the beginning and 294.6 MB in the end (delta: 49.8 MB). Free memory was 200.8 MB in the beginning and 247.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 87.70 ms. Allocated memory is still 294.6 MB. Free memory is still 247.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 40.42 ms. Allocated memory is still 294.6 MB. Free memory was 247.5 MB in the beginning and 245.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 466.04 ms. Allocated memory is still 294.6 MB. Free memory was 245.0 MB in the beginning and 223.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4771.67 ms. Allocated memory was 294.6 MB in the beginning and 427.3 MB in the end (delta: 132.6 MB). Free memory was 220.6 MB in the beginning and 338.2 MB in the end (delta: -117.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 228 SDslu, 474 SDs, 0 SdLazy, 339 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 522 GetRequests, 432 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 486 ConstructedInterpolants, 0 QuantifiedInterpolants, 56612 SizeOfPredicates, 51 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...