/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:04:10,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:04:10,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:04:10,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:04:10,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:04:10,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:04:10,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:04:10,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:04:10,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:04:10,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:04:10,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:04:10,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:04:10,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:04:10,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:04:10,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:04:10,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:04:10,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:04:10,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:04:10,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:04:10,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:04:10,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:04:10,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:04:10,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:04:10,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:04:10,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:04:10,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:04:10,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:04:10,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:04:10,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:04:10,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:04:10,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:04:10,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:04:10,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:04:10,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:04:10,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:04:10,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:04:10,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:04:10,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:04:10,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:04:10,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:04:10,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:04:10,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:04:10,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:04:10,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:04:10,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:04:10,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:04:10,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:04:10,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:04:10,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:04:10,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:04:10,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:04:10,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:04:10,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:04:10,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:04:10,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:04:10,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:04:10,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:04:10,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:04:10,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:04:10,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:04:10,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:04:10,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:04:10,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:04:10,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:04:10,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:04:10,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:04:10,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:04:10,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:04:10,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:04:10,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:04:10,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:04:10,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-16 05:04:10,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5582c412/b472ea074e6d4ccc87aec216bce0f851/FLAG882f6e33b [2020-10-16 05:04:10,935 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:04:10,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-16 05:04:10,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5582c412/b472ea074e6d4ccc87aec216bce0f851/FLAG882f6e33b [2020-10-16 05:04:11,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5582c412/b472ea074e6d4ccc87aec216bce0f851 [2020-10-16 05:04:11,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:04:11,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:04:11,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:11,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:04:11,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:04:11,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:11,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6f427d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11, skipping insertion in model container [2020-10-16 05:04:11,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:11,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:04:11,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:04:11,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:11,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:04:11,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:11,938 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:04:11,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11 WrapperNode [2020-10-16 05:04:11,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:11,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:11,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:04:11,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:04:11,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:11,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:11,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:11,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:04:11,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:04:11,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:04:12,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (1/1) ... [2020-10-16 05:04:12,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:04:12,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:04:12,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:04:12,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:04:12,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (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 [2020-10-16 05:04:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:04:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:04:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:04:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:04:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:04:12,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:04:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:04:12,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:04:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:04:12,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:04:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:04:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:04:12,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:04:12,087 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:04:12,469 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:04:12,469 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:04:12,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:12 BoogieIcfgContainer [2020-10-16 05:04:12,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:04:12,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:04:12,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:04:12,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:04:12,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:04:11" (1/3) ... [2020-10-16 05:04:12,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b9ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:12, skipping insertion in model container [2020-10-16 05:04:12,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:11" (2/3) ... [2020-10-16 05:04:12,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b9ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:12, skipping insertion in model container [2020-10-16 05:04:12,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:12" (3/3) ... [2020-10-16 05:04:12,480 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-10-16 05:04:12,491 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:04:12,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:04:12,499 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:04:12,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:12,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:04:12,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:04:12,605 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:04:12,605 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:04:12,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:04:12,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:04:12,605 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:04:12,605 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:04:12,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:04:12,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:04:12,660 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 05:04:12,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:12,666 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. [2020-10-16 05:04:12,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:04:12,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 05:04:12,675 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:04:12,677 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:04:12,680 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:04:12,681 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 05:04:12,698 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 05:04:12,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:12,699 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:04:12,701 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:04:14,026 INFO L132 LiptonReduction]: Checked pairs total: 1796 [2020-10-16 05:04:14,026 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 05:04:14,029 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1357 [2020-10-16 05:04:14,037 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:04:14,037 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:14,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:14,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:14,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1282912004, now seen corresponding path program 1 times [2020-10-16 05:04:14,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:14,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230565225] [2020-10-16 05:04:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:14,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230565225] [2020-10-16 05:04:14,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:14,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:14,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695169525] [2020-10-16 05:04:14,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:14,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:14,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:14,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:14,332 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 115 [2020-10-16 05:04:14,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:04:14,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:14,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 115 [2020-10-16 05:04:14,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:14,357 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:04:14,358 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:14,358 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:04:14,359 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:04:14,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:04:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:04:14,377 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-16 05:04:14,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:04:14,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:04:14,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:14,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:04:14,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:14,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:14,396 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:14,398 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:04:14,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:04:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:04:14,404 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:04:14,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:04:14,408 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:04:14,409 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:04:14,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:14,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:14,409 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:14,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:04:14,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1115567179, now seen corresponding path program 1 times [2020-10-16 05:04:14,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:14,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003641631] [2020-10-16 05:04:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:14,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003641631] [2020-10-16 05:04:14,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:14,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:14,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495051814] [2020-10-16 05:04:14,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:14,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:14,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:14,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:14,486 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:04:14,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:04:14,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:14,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:04:14,488 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:14,517 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:04:14,517 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2020-10-16 05:04:14,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:04:14,518 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:04:14,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 05:04:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:04:14,523 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:04:14,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:14,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:14,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:14,531 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:14,532 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:04:14,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 05:04:14,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:14,533 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:14,534 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:04:14,534 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:14,535 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:14,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:14,535 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:14,535 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:14,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:04:14,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1662706082, now seen corresponding path program 1 times [2020-10-16 05:04:14,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:14,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089557010] [2020-10-16 05:04:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:14,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089557010] [2020-10-16 05:04:14,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954426857] [2020-10-16 05:04:14,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:14,599 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:04:14,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:04:14,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:14,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:04:14,601 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:14,626 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-10-16 05:04:14,626 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-16 05:04:14,627 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 25 events. 0/25 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:04:14,627 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:04:14,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 70 flow [2020-10-16 05:04:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:04:14,630 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:04:14,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:14,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:04:14,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:14,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:14,634 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:14,634 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:04:14,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 70 flow [2020-10-16 05:04:14,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 56 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 05:04:14,636 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:14,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:04:14,637 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:14,637 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:04:14,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:14,638 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:14,638 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:14,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:04:14,638 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:14,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1423547940, now seen corresponding path program 1 times [2020-10-16 05:04:14,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:14,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712823334] [2020-10-16 05:04:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:14,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712823334] [2020-10-16 05:04:14,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:14,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:14,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329253335] [2020-10-16 05:04:14,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:14,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:14,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:14,756 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2020-10-16 05:04:14,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:04:14,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:14,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2020-10-16 05:04:14,757 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:14,821 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:04:14,821 INFO L130 PetriNetUnfolder]: For 79/86 co-relation queries the response was YES. [2020-10-16 05:04:14,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 69 events. 28/69 cut-off events. For 79/86 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 208 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 155. Up to 45 conditions per place. [2020-10-16 05:04:14,826 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:04:14,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 110 flow [2020-10-16 05:04:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2020-10-16 05:04:14,831 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7965217391304348 [2020-10-16 05:04:14,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2020-10-16 05:04:14,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2020-10-16 05:04:14,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:14,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2020-10-16 05:04:14,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:14,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:14,838 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:14,838 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 5 states and 458 transitions. [2020-10-16 05:04:14,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 110 flow [2020-10-16 05:04:14,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 98 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:14,840 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 82 flow [2020-10-16 05:04:14,840 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2020-10-16 05:04:14,841 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:04:14,841 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 82 flow [2020-10-16 05:04:14,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:14,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:14,841 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:14,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:04:14,842 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1875712993, now seen corresponding path program 1 times [2020-10-16 05:04:14,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:14,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259391636] [2020-10-16 05:04:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:14,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259391636] [2020-10-16 05:04:14,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:14,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:14,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590673779] [2020-10-16 05:04:14,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:04:14,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:14,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:04:14,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:04:14,922 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2020-10-16 05:04:14,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 82 flow. Second operand 5 states. [2020-10-16 05:04:14,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:14,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2020-10-16 05:04:14,923 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:14,987 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:04:14,987 INFO L130 PetriNetUnfolder]: For 74/119 co-relation queries the response was YES. [2020-10-16 05:04:14,988 INFO L80 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 50 events. 16/50 cut-off events. For 74/119 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 166. Up to 35 conditions per place. [2020-10-16 05:04:14,989 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:04:14,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 178 flow [2020-10-16 05:04:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:04:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:04:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2020-10-16 05:04:14,992 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7956521739130434 [2020-10-16 05:04:14,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2020-10-16 05:04:14,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2020-10-16 05:04:14,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:14,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2020-10-16 05:04:14,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:04:14,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:04:14,996 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:04:14,996 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 82 flow. Second operand 6 states and 549 transitions. [2020-10-16 05:04:14,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 178 flow [2020-10-16 05:04:14,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:14,999 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 132 flow [2020-10-16 05:04:14,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 05:04:14,999 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:04:14,999 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 132 flow [2020-10-16 05:04:15,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:04:15,000 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:15,000 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:15,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:04:15,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1577494974, now seen corresponding path program 1 times [2020-10-16 05:04:15,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:15,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011698112] [2020-10-16 05:04:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:15,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011698112] [2020-10-16 05:04:15,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:15,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:04:15,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088125108] [2020-10-16 05:04:15,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:04:15,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:04:15,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:04:15,075 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2020-10-16 05:04:15,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 132 flow. Second operand 6 states. [2020-10-16 05:04:15,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:15,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2020-10-16 05:04:15,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:15,156 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:04:15,157 INFO L130 PetriNetUnfolder]: For 102/135 co-relation queries the response was YES. [2020-10-16 05:04:15,157 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 32 events. 7/32 cut-off events. For 102/135 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 123. Up to 20 conditions per place. [2020-10-16 05:04:15,157 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:04:15,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 200 flow [2020-10-16 05:04:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2020-10-16 05:04:15,161 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7875776397515528 [2020-10-16 05:04:15,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2020-10-16 05:04:15,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2020-10-16 05:04:15,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:15,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2020-10-16 05:04:15,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:15,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:15,166 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:15,166 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 132 flow. Second operand 7 states and 634 transitions. [2020-10-16 05:04:15,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 200 flow [2020-10-16 05:04:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 164 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:15,174 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 134 flow [2020-10-16 05:04:15,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2020-10-16 05:04:15,175 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 05:04:15,175 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 134 flow [2020-10-16 05:04:15,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:04:15,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:15,175 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:15,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:04:15,176 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 133238228, now seen corresponding path program 1 times [2020-10-16 05:04:15,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:15,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171885780] [2020-10-16 05:04:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:15,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171885780] [2020-10-16 05:04:15,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:15,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:15,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60533811] [2020-10-16 05:04:15,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:15,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:15,250 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:04:15,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 134 flow. Second operand 4 states. [2020-10-16 05:04:15,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:15,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:04:15,254 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:15,274 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 05:04:15,275 INFO L130 PetriNetUnfolder]: For 46/51 co-relation queries the response was YES. [2020-10-16 05:04:15,275 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 25 events. 5/25 cut-off events. For 46/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 77. Up to 11 conditions per place. [2020-10-16 05:04:15,275 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:04:15,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 22 transitions, 130 flow [2020-10-16 05:04:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2020-10-16 05:04:15,278 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-10-16 05:04:15,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2020-10-16 05:04:15,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2020-10-16 05:04:15,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:15,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2020-10-16 05:04:15,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:15,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:15,282 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:15,282 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 134 flow. Second operand 4 states and 368 transitions. [2020-10-16 05:04:15,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 22 transitions, 130 flow [2020-10-16 05:04:15,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 96 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 05:04:15,285 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2020-10-16 05:04:15,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2020-10-16 05:04:15,285 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:04:15,286 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2020-10-16 05:04:15,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:15,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:04:15,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:04:15 BasicIcfg [2020-10-16 05:04:15,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:04:15,294 INFO L168 Benchmark]: Toolchain (without parser) took 4043.32 ms. Allocated memory was 249.6 MB in the beginning and 368.6 MB in the end (delta: 119.0 MB). Free memory was 204.9 MB in the beginning and 266.7 MB in the end (delta: -61.8 MB). Peak memory consumption was 57.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:15,295 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:15,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.43 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.9 MB in the beginning and 265.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:15,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.11 ms. Allocated memory is still 309.9 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:15,303 INFO L168 Benchmark]: Boogie Preprocessor took 30.20 ms. Allocated memory is still 309.9 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:15,304 INFO L168 Benchmark]: RCFGBuilder took 447.69 ms. Allocated memory is still 309.9 MB. Free memory was 260.1 MB in the beginning and 238.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:15,305 INFO L168 Benchmark]: TraceAbstraction took 2818.73 ms. Allocated memory was 309.9 MB in the beginning and 368.6 MB in the end (delta: 58.7 MB). Free memory was 238.0 MB in the beginning and 266.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:15,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 688.43 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.9 MB in the beginning and 265.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.11 ms. Allocated memory is still 309.9 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.20 ms. Allocated memory is still 309.9 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 447.69 ms. Allocated memory is still 309.9 MB. Free memory was 260.1 MB in the beginning and 238.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2818.73 ms. Allocated memory was 309.9 MB in the beginning and 368.6 MB in the end (delta: 58.7 MB). Free memory was 238.0 MB in the beginning and 266.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 653 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 99 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 1796 MoverChecksTotal - 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: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 22 SDtfs, 12 SDslu, 14 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, 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, 0.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 3258 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...