/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/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:41:41,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:41:41,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:41:41,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:41:41,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:41:41,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:41:41,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:41:41,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:41:41,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:41:41,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:41:41,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:41:41,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:41:41,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:41:41,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:41:41,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:41:41,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:41:41,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:41:41,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:41:41,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:41:41,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:41:41,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:41:41,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:41:41,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:41:41,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:41:41,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:41:41,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:41:41,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:41:41,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:41:41,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:41:41,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:41:41,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:41:41,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:41:41,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:41:41,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:41:41,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:41:41,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:41:41,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:41:41,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:41:41,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:41:41,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:41:41,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:41:41,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:41:41,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:41:41,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:41:41,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:41:41,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:41:41,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:41:41,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:41:41,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:41:41,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:41:41,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:41:41,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:41:41,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:41:41,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:41:41,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:41:41,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:41:41,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:41:41,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:41:41,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:41:41,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:41:41,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:41:41,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:41:41,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:41:41,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:41:41,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:41:41,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:41:41,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:41:41,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:41:41,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:41:41,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:41:41,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:41:41,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:41:41,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-10-11 18:41:41,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4db73af6/b2235b1602c54448af0ed47922c5e16b/FLAG23ff2e98e [2020-10-11 18:41:42,386 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:41:42,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-10-11 18:41:42,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4db73af6/b2235b1602c54448af0ed47922c5e16b/FLAG23ff2e98e [2020-10-11 18:41:42,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4db73af6/b2235b1602c54448af0ed47922c5e16b [2020-10-11 18:41:42,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:41:42,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:41:42,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:42,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:41:42,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:41:42,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:42" (1/1) ... [2020-10-11 18:41:42,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c83fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:42, skipping insertion in model container [2020-10-11 18:41:42,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:42" (1/1) ... [2020-10-11 18:41:42,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:41:42,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:41:43,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:43,314 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:41:43,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:43,444 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:41:43,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43 WrapperNode [2020-10-11 18:41:43,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:43,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:43,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:41:43,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:41:43,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:43,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:41:43,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:41:43,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:41:43,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (1/1) ... [2020-10-11 18:41:43,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:41:43,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:41:43,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:41:43,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:41:43,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (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 18:41:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:41:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:41:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:41:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:41:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:41:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:41:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:41:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:41:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:41:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:41:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:41:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:41:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:41:43,597 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 18:41:43,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:41:43,923 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:41:43,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:43 BoogieIcfgContainer [2020-10-11 18:41:43,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:41:43,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:41:43,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:41:43,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:41:43,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:41:42" (1/3) ... [2020-10-11 18:41:43,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb6995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:43, skipping insertion in model container [2020-10-11 18:41:43,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:43" (2/3) ... [2020-10-11 18:41:43,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb6995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:43, skipping insertion in model container [2020-10-11 18:41:43,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:43" (3/3) ... [2020-10-11 18:41:43,933 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-10-11 18:41:43,944 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:41:43,951 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:41:43,952 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:41:43,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,980 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,980 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,980 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,982 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,982 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,982 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,983 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,984 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,984 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,984 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,984 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,985 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,985 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,988 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,989 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:43,989 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,000 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,001 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:44,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:41:44,059 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:41:44,059 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:41:44,059 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:41:44,060 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:41:44,060 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:41:44,060 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:41:44,060 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:41:44,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:41:44,073 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-11 18:41:44,117 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-11 18:41:44,117 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:44,122 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. [2020-10-11 18:41:44,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-11 18:41:44,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-11 18:41:44,153 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-11 18:41:44,153 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:44,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:44,155 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] [2020-10-11 18:41:44,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:44,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:44,161 INFO L82 PathProgramCache]: Analyzing trace with hash 69348230, now seen corresponding path program 1 times [2020-10-11 18:41:44,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:44,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469613516] [2020-10-11 18:41:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:44,613 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 18:41:44,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469613516] [2020-10-11 18:41:44,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:44,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:44,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757569870] [2020-10-11 18:41:44,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:44,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:44,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:44,866 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-11 18:41:44,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand 6 states. [2020-10-11 18:41:44,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:44,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-11 18:41:44,870 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:45,047 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2020-10-11 18:41:45,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:45,048 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 120 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. [2020-10-11 18:41:45,050 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 6 selfloop transitions, 2 changer transitions 11/66 dead transitions. [2020-10-11 18:41:45,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 177 flow [2020-10-11 18:41:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2020-10-11 18:41:45,070 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8935837245696401 [2020-10-11 18:41:45,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2020-10-11 18:41:45,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2020-10-11 18:41:45,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:45,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2020-10-11 18:41:45,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:45,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:45,092 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:45,095 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 9 states and 571 transitions. [2020-10-11 18:41:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 177 flow [2020-10-11 18:41:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:41:45,105 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 136 flow [2020-10-11 18:41:45,108 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} [2020-10-11 18:41:45,109 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-11 18:41:45,110 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 136 flow [2020-10-11 18:41:45,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:45,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:45,110 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] [2020-10-11 18:41:45,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:41:45,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1620918905, now seen corresponding path program 1 times [2020-10-11 18:41:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:45,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965297812] [2020-10-11 18:41:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:45,264 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 18:41:45,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965297812] [2020-10-11 18:41:45,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:45,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:45,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475268928] [2020-10-11 18:41:45,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:45,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:45,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:45,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:45,443 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:41:45,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 136 flow. Second operand 7 states. [2020-10-11 18:41:45,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:45,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:41:45,444 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:45,612 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2020-10-11 18:41:45,612 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2020-10-11 18:41:45,613 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 76 events. 4/76 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2020-10-11 18:41:45,614 INFO L132 encePairwiseOnDemand]: 63/71 looper letters, 6 selfloop transitions, 4 changer transitions 12/67 dead transitions. [2020-10-11 18:41:45,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 67 transitions, 227 flow [2020-10-11 18:41:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:41:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:41:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 614 transitions. [2020-10-11 18:41:45,618 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8647887323943662 [2020-10-11 18:41:45,618 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 614 transitions. [2020-10-11 18:41:45,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 614 transitions. [2020-10-11 18:41:45,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:45,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 614 transitions. [2020-10-11 18:41:45,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:41:45,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:41:45,624 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:41:45,624 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 136 flow. Second operand 10 states and 614 transitions. [2020-10-11 18:41:45,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 67 transitions, 227 flow [2020-10-11 18:41:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 67 transitions, 193 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:45,628 INFO L241 Difference]: Finished difference. Result has 80 places, 55 transitions, 150 flow [2020-10-11 18:41:45,629 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2020-10-11 18:41:45,629 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2020-10-11 18:41:45,630 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 150 flow [2020-10-11 18:41:45,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:45,630 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:45,630 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] [2020-10-11 18:41:45,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:41:45,631 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1267516492, now seen corresponding path program 1 times [2020-10-11 18:41:45,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:45,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108368689] [2020-10-11 18:41:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:45,805 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 18:41:45,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108368689] [2020-10-11 18:41:45,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:45,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:45,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707932040] [2020-10-11 18:41:45,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:45,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:45,940 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:41:45,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 150 flow. Second operand 6 states. [2020-10-11 18:41:45,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:45,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:41:45,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:46,110 INFO L129 PetriNetUnfolder]: 91/280 cut-off events. [2020-10-11 18:41:46,110 INFO L130 PetriNetUnfolder]: For 47/48 co-relation queries the response was YES. [2020-10-11 18:41:46,113 INFO L80 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 280 events. 91/280 cut-off events. For 47/48 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1331 event pairs, 10 based on Foata normal form. 8/280 useless extension candidates. Maximal degree in co-relation 500. Up to 81 conditions per place. [2020-10-11 18:41:46,115 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 10 selfloop transitions, 6 changer transitions 19/80 dead transitions. [2020-10-11 18:41:46,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 270 flow [2020-10-11 18:41:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 559 transitions. [2020-10-11 18:41:46,119 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8748043818466353 [2020-10-11 18:41:46,120 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 559 transitions. [2020-10-11 18:41:46,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 559 transitions. [2020-10-11 18:41:46,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:46,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 559 transitions. [2020-10-11 18:41:46,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:46,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:46,124 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:46,125 INFO L185 Difference]: Start difference. First operand has 80 places, 55 transitions, 150 flow. Second operand 9 states and 559 transitions. [2020-10-11 18:41:46,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 270 flow [2020-10-11 18:41:46,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 244 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-11 18:41:46,130 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 180 flow [2020-10-11 18:41:46,131 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2020-10-11 18:41:46,131 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-11 18:41:46,131 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 180 flow [2020-10-11 18:41:46,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:46,132 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:46,132 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] [2020-10-11 18:41:46,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:41:46,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:46,133 INFO L82 PathProgramCache]: Analyzing trace with hash 653079045, now seen corresponding path program 1 times [2020-10-11 18:41:46,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:46,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778966434] [2020-10-11 18:41:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:46,310 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 18:41:46,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778966434] [2020-10-11 18:41:46,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:46,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:46,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316468429] [2020-10-11 18:41:46,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:46,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:46,438 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:41:46,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 180 flow. Second operand 7 states. [2020-10-11 18:41:46,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:46,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:41:46,439 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:46,636 INFO L129 PetriNetUnfolder]: 52/196 cut-off events. [2020-10-11 18:41:46,636 INFO L130 PetriNetUnfolder]: For 267/303 co-relation queries the response was YES. [2020-10-11 18:41:46,638 INFO L80 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 196 events. 52/196 cut-off events. For 267/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 755 event pairs, 0 based on Foata normal form. 13/205 useless extension candidates. Maximal degree in co-relation 548. Up to 75 conditions per place. [2020-10-11 18:41:46,639 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 10 selfloop transitions, 9 changer transitions 19/83 dead transitions. [2020-10-11 18:41:46,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 433 flow [2020-10-11 18:41:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:41:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:41:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 620 transitions. [2020-10-11 18:41:46,642 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8732394366197183 [2020-10-11 18:41:46,643 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 620 transitions. [2020-10-11 18:41:46,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 620 transitions. [2020-10-11 18:41:46,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:46,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 620 transitions. [2020-10-11 18:41:46,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:41:46,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:41:46,647 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:41:46,647 INFO L185 Difference]: Start difference. First operand has 78 places, 58 transitions, 180 flow. Second operand 10 states and 620 transitions. [2020-10-11 18:41:46,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 433 flow [2020-10-11 18:41:46,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 409 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:41:46,653 INFO L241 Difference]: Finished difference. Result has 84 places, 61 transitions, 248 flow [2020-10-11 18:41:46,653 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2020-10-11 18:41:46,653 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2020-10-11 18:41:46,653 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 248 flow [2020-10-11 18:41:46,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:46,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:46,654 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] [2020-10-11 18:41:46,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:41:46,654 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -201929254, now seen corresponding path program 1 times [2020-10-11 18:41:46,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:46,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769232856] [2020-10-11 18:41:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:46,776 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 18:41:46,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769232856] [2020-10-11 18:41:46,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:46,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:41:46,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128467200] [2020-10-11 18:41:46,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:41:46,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:41:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:41:46,929 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:41:46,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 248 flow. Second operand 8 states. [2020-10-11 18:41:46,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:46,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:41:46,931 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:47,113 INFO L129 PetriNetUnfolder]: 16/101 cut-off events. [2020-10-11 18:41:47,113 INFO L130 PetriNetUnfolder]: For 390/437 co-relation queries the response was YES. [2020-10-11 18:41:47,114 INFO L80 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 101 events. 16/101 cut-off events. For 390/437 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 0 based on Foata normal form. 14/114 useless extension candidates. Maximal degree in co-relation 318. Up to 30 conditions per place. [2020-10-11 18:41:47,115 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 4 selfloop transitions, 12 changer transitions 13/74 dead transitions. [2020-10-11 18:41:47,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 74 transitions, 432 flow [2020-10-11 18:41:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:41:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:41:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2020-10-11 18:41:47,118 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8565941101152369 [2020-10-11 18:41:47,118 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2020-10-11 18:41:47,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2020-10-11 18:41:47,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:47,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2020-10-11 18:41:47,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:41:47,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:41:47,123 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:41:47,123 INFO L185 Difference]: Start difference. First operand has 84 places, 61 transitions, 248 flow. Second operand 11 states and 669 transitions. [2020-10-11 18:41:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 74 transitions, 432 flow [2020-10-11 18:41:47,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 333 flow, removed 39 selfloop flow, removed 10 redundant places. [2020-10-11 18:41:47,129 INFO L241 Difference]: Finished difference. Result has 86 places, 61 transitions, 234 flow [2020-10-11 18:41:47,129 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=234, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2020-10-11 18:41:47,129 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2020-10-11 18:41:47,130 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 234 flow [2020-10-11 18:41:47,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:41:47,130 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:47,130 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, 1, 1, 1, 1] [2020-10-11 18:41:47,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:41:47,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:47,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1795180804, now seen corresponding path program 1 times [2020-10-11 18:41:47,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:47,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103574922] [2020-10-11 18:41:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:47,225 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 18:41:47,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103574922] [2020-10-11 18:41:47,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:47,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:47,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320462011] [2020-10-11 18:41:47,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:47,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:47,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:47,476 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:41:47,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 234 flow. Second operand 7 states. [2020-10-11 18:41:47,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:47,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:41:47,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:47,551 INFO L129 PetriNetUnfolder]: 10/112 cut-off events. [2020-10-11 18:41:47,551 INFO L130 PetriNetUnfolder]: For 139/149 co-relation queries the response was YES. [2020-10-11 18:41:47,552 INFO L80 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 112 events. 10/112 cut-off events. For 139/149 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 228. Up to 21 conditions per place. [2020-10-11 18:41:47,552 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 9 selfloop transitions, 1 changer transitions 5/66 dead transitions. [2020-10-11 18:41:47,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 274 flow [2020-10-11 18:41:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2020-10-11 18:41:47,555 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2020-10-11 18:41:47,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2020-10-11 18:41:47,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2020-10-11 18:41:47,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:47,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2020-10-11 18:41:47,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:47,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:47,558 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:47,558 INFO L185 Difference]: Start difference. First operand has 86 places, 61 transitions, 234 flow. Second operand 7 states and 429 transitions. [2020-10-11 18:41:47,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 274 flow [2020-10-11 18:41:47,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 192 flow, removed 22 selfloop flow, removed 15 redundant places. [2020-10-11 18:41:47,562 INFO L241 Difference]: Finished difference. Result has 78 places, 61 transitions, 165 flow [2020-10-11 18:41:47,562 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2020-10-11 18:41:47,562 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-11 18:41:47,562 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 165 flow [2020-10-11 18:41:47,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:47,563 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:47,563 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, 1, 1, 1, 1] [2020-10-11 18:41:47,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:41:47,563 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash -511071604, now seen corresponding path program 2 times [2020-10-11 18:41:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:47,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726910331] [2020-10-11 18:41:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:47,662 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 18:41:47,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726910331] [2020-10-11 18:41:47,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:47,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:47,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237696211] [2020-10-11 18:41:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:47,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:47,826 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:41:47,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 165 flow. Second operand 7 states. [2020-10-11 18:41:47,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:47,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:41:47,828 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:47,902 INFO L129 PetriNetUnfolder]: 7/93 cut-off events. [2020-10-11 18:41:47,902 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 18:41:47,903 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 93 events. 7/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 0 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 140. Up to 10 conditions per place. [2020-10-11 18:41:47,903 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-11 18:41:47,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 60 transitions, 181 flow [2020-10-11 18:41:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2020-10-11 18:41:47,905 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8531187122736419 [2020-10-11 18:41:47,906 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2020-10-11 18:41:47,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2020-10-11 18:41:47,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:47,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2020-10-11 18:41:47,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:47,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:47,909 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:47,909 INFO L185 Difference]: Start difference. First operand has 78 places, 61 transitions, 165 flow. Second operand 7 states and 424 transitions. [2020-10-11 18:41:47,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 60 transitions, 181 flow [2020-10-11 18:41:47,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:41:47,911 INFO L241 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2020-10-11 18:41:47,911 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2020-10-11 18:41:47,911 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2020-10-11 18:41:47,912 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2020-10-11 18:41:47,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:47,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:41:47,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:41:47 BasicIcfg [2020-10-11 18:41:47,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:41:47,921 INFO L168 Benchmark]: Toolchain (without parser) took 5211.75 ms. Allocated memory was 254.8 MB in the beginning and 421.0 MB in the end (delta: 166.2 MB). Free memory was 209.5 MB in the beginning and 289.3 MB in the end (delta: -79.8 MB). Peak memory consumption was 86.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:47,922 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:41:47,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.20 ms. Allocated memory was 254.8 MB in the beginning and 322.4 MB in the end (delta: 67.6 MB). Free memory was 209.5 MB in the beginning and 275.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:47,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 322.4 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:41:47,924 INFO L168 Benchmark]: Boogie Preprocessor took 27.85 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 272.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:47,925 INFO L168 Benchmark]: RCFGBuilder took 392.15 ms. Allocated memory is still 322.4 MB. Free memory was 272.6 MB in the beginning and 250.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:47,926 INFO L168 Benchmark]: TraceAbstraction took 3992.41 ms. Allocated memory was 322.4 MB in the beginning and 421.0 MB in the end (delta: 98.6 MB). Free memory was 248.3 MB in the beginning and 289.3 MB in the end (delta: -41.0 MB). Peak memory consumption was 57.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:47,930 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 733.20 ms. Allocated memory was 254.8 MB in the beginning and 322.4 MB in the end (delta: 67.6 MB). Free memory was 209.5 MB in the beginning and 275.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 57.08 ms. Allocated memory is still 322.4 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.85 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 272.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 392.15 ms. Allocated memory is still 322.4 MB. Free memory was 272.6 MB in the beginning and 250.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3992.41 ms. Allocated memory was 322.4 MB in the beginning and 421.0 MB in the end (delta: 98.6 MB). Free memory was 248.3 MB in the beginning and 289.3 MB in the end (delta: -41.0 MB). Peak memory consumption was 57.5 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: 3.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 193 SDslu, 398 SDs, 0 SdLazy, 462 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 36573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...