/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/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:34:41,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:34:41,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:34:41,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:34:41,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:34:41,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:34:41,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:34:41,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:34:41,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:34:41,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:34:41,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:34:41,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:34:41,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:34:41,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:34:41,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:34:41,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:34:41,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:34:41,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:34:41,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:34:42,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:34:42,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:34:42,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:34:42,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:34:42,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:34:42,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:34:42,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:34:42,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:34:42,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:34:42,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:34:42,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:34:42,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:34:42,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:34:42,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:34:42,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:34:42,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:34:42,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:34:42,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:34:42,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:34:42,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:34:42,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:34:42,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:34:42,035 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 18:34:42,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:34:42,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:34:42,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:34:42,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:34:42,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:34:42,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:34:42,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:34:42,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:34:42,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:34:42,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:34:42,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:34:42,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:34:42,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:34:42,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:34:42,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:34:42,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:34:42,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:34:42,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:34:42,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:34:42,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:34:42,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:34:42,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:34:42,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:34:42,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:34:42,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:34:42,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:34:42,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:34:42,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:34:42,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:34:42,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:34:42,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:34:42,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:34:42,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:34:42,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:34:42,357 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:34:42,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-10-11 18:34:42,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eece85a45/a58672e25cd647ccae0c1228330696b4/FLAG349846e41 [2020-10-11 18:34:43,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:34:43,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-10-11 18:34:43,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eece85a45/a58672e25cd647ccae0c1228330696b4/FLAG349846e41 [2020-10-11 18:34:43,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eece85a45/a58672e25cd647ccae0c1228330696b4 [2020-10-11 18:34:43,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:34:43,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:34:43,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:34:43,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:34:43,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:34:43,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:34:43" (1/1) ... [2020-10-11 18:34:43,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230290f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:43, skipping insertion in model container [2020-10-11 18:34:43,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:34:43" (1/1) ... [2020-10-11 18:34:43,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:34:43,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:34:43,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:34:43,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:34:43,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:34:44,015 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:34:44,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44 WrapperNode [2020-10-11 18:34:44,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:34:44,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:34:44,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:34:44,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:34:44,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:34:44,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:34:44,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:34:44,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:34:44,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (1/1) ... [2020-10-11 18:34:44,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:34:44,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:34:44,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:34:44,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:34:44,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (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 18:34:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:34:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:34:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:34:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:34:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:34:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:34:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:34:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:34:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:34:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:34:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:34:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:34:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:34:44,159 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 18:34:44,482 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:34:44,482 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:34:44,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:34:44 BoogieIcfgContainer [2020-10-11 18:34:44,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:34:44,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:34:44,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:34:44,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:34:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:34:43" (1/3) ... [2020-10-11 18:34:44,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:34:44, skipping insertion in model container [2020-10-11 18:34:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:34:44" (2/3) ... [2020-10-11 18:34:44,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:34:44, skipping insertion in model container [2020-10-11 18:34:44,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:34:44" (3/3) ... [2020-10-11 18:34:44,493 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-10-11 18:34:44,503 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:34:44,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:34:44,510 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:34:44,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:34:44,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:34:44,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:34:44,602 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:34:44,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:34:44,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:34:44,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:34:44,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:34:44,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:34:44,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:34:44,617 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-11 18:34:44,661 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-11 18:34:44,662 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:34:44,667 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-11 18:34:44,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-11 18:34:44,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-11 18:34:44,698 INFO L129 PetriNetUnfolder]: 1/53 cut-off events. [2020-10-11 18:34:44,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:34:44,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:44,702 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] [2020-10-11 18:34:44,703 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:44,709 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 1 times [2020-10-11 18:34:44,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:44,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457332111] [2020-10-11 18:34:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:45,104 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 18:34:45,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457332111] [2020-10-11 18:34:45,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:45,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:34:45,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134236302] [2020-10-11 18:34:45,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:34:45,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:45,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:34:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:34:45,396 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:34:45,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 117 flow. Second operand 6 states. [2020-10-11 18:34:45,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:45,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:34:45,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:45,602 INFO L129 PetriNetUnfolder]: 24/139 cut-off events. [2020-10-11 18:34:45,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:34:45,603 INFO L80 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 139 events. 24/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 501 event pairs, 5 based on Foata normal form. 6/142 useless extension candidates. Maximal degree in co-relation 186. Up to 31 conditions per place. [2020-10-11 18:34:45,605 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:34:45,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 217 flow [2020-10-11 18:34:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:34:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:34:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2020-10-11 18:34:45,625 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8937908496732027 [2020-10-11 18:34:45,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2020-10-11 18:34:45,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2020-10-11 18:34:45,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:45,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2020-10-11 18:34:45,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:34:45,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:34:45,652 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:34:45,654 INFO L185 Difference]: Start difference. First operand has 63 places, 54 transitions, 117 flow. Second operand 9 states and 547 transitions. [2020-10-11 18:34:45,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 217 flow [2020-10-11 18:34:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:34:45,665 INFO L241 Difference]: Finished difference. Result has 75 places, 55 transitions, 155 flow [2020-10-11 18:34:45,668 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=155, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2020-10-11 18:34:45,669 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2020-10-11 18:34:45,669 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 155 flow [2020-10-11 18:34:45,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:34:45,670 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:45,670 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 18:34:45,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:34:45,671 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1136574554, now seen corresponding path program 1 times [2020-10-11 18:34:45,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:45,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203270787] [2020-10-11 18:34:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:45,807 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 18:34:45,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203270787] [2020-10-11 18:34:45,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:45,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:34:45,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129541403] [2020-10-11 18:34:45,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:34:45,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:34:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:34:45,971 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 68 [2020-10-11 18:34:45,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 155 flow. Second operand 6 states. [2020-10-11 18:34:45,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:45,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 68 [2020-10-11 18:34:45,972 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:46,101 INFO L129 PetriNetUnfolder]: 26/156 cut-off events. [2020-10-11 18:34:46,102 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2020-10-11 18:34:46,104 INFO L80 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 156 events. 26/156 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 605 event pairs, 8 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 317. Up to 28 conditions per place. [2020-10-11 18:34:46,105 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 6 selfloop transitions, 2 changer transitions 10/65 dead transitions. [2020-10-11 18:34:46,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 229 flow [2020-10-11 18:34:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:34:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:34:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2020-10-11 18:34:46,109 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8856209150326797 [2020-10-11 18:34:46,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:46,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:34:46,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:34:46,114 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:34:46,114 INFO L185 Difference]: Start difference. First operand has 75 places, 55 transitions, 155 flow. Second operand 9 states and 542 transitions. [2020-10-11 18:34:46,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 229 flow [2020-10-11 18:34:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 212 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:34:46,121 INFO L241 Difference]: Finished difference. Result has 80 places, 55 transitions, 166 flow [2020-10-11 18:34:46,121 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2020-10-11 18:34:46,122 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2020-10-11 18:34:46,122 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 166 flow [2020-10-11 18:34:46,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:34:46,123 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:46,123 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 18:34:46,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:34:46,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1502392217, now seen corresponding path program 1 times [2020-10-11 18:34:46,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:46,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61838279] [2020-10-11 18:34:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:46,244 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 18:34:46,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61838279] [2020-10-11 18:34:46,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:46,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:34:46,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610219721] [2020-10-11 18:34:46,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:34:46,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:34:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:34:46,364 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 68 [2020-10-11 18:34:46,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 166 flow. Second operand 6 states. [2020-10-11 18:34:46,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:46,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 68 [2020-10-11 18:34:46,365 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:46,481 INFO L129 PetriNetUnfolder]: 14/107 cut-off events. [2020-10-11 18:34:46,481 INFO L130 PetriNetUnfolder]: For 164/166 co-relation queries the response was YES. [2020-10-11 18:34:46,483 INFO L80 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 107 events. 14/107 cut-off events. For 164/166 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 279 event pairs, 5 based on Foata normal form. 3/107 useless extension candidates. Maximal degree in co-relation 238. Up to 21 conditions per place. [2020-10-11 18:34:46,484 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 6 selfloop transitions, 2 changer transitions 10/65 dead transitions. [2020-10-11 18:34:46,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 250 flow [2020-10-11 18:34:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:34:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:34:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2020-10-11 18:34:46,487 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8856209150326797 [2020-10-11 18:34:46,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:46,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2020-10-11 18:34:46,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:34:46,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:34:46,491 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:34:46,491 INFO L185 Difference]: Start difference. First operand has 80 places, 55 transitions, 166 flow. Second operand 9 states and 542 transitions. [2020-10-11 18:34:46,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 250 flow [2020-10-11 18:34:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 218 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:34:46,497 INFO L241 Difference]: Finished difference. Result has 81 places, 55 transitions, 170 flow [2020-10-11 18:34:46,497 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2020-10-11 18:34:46,497 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2020-10-11 18:34:46,498 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 170 flow [2020-10-11 18:34:46,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:34:46,498 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:46,498 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] [2020-10-11 18:34:46,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:34:46,499 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1547998419, now seen corresponding path program 1 times [2020-10-11 18:34:46,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:46,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61032328] [2020-10-11 18:34:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:46,637 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 18:34:46,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61032328] [2020-10-11 18:34:46,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:46,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:34:46,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297988977] [2020-10-11 18:34:46,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:34:46,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:34:46,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:34:46,825 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:34:46,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 170 flow. Second operand 6 states. [2020-10-11 18:34:46,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:46,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:34:46,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:46,935 INFO L129 PetriNetUnfolder]: 7/115 cut-off events. [2020-10-11 18:34:46,935 INFO L130 PetriNetUnfolder]: For 169/187 co-relation queries the response was YES. [2020-10-11 18:34:46,936 INFO L80 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 115 events. 7/115 cut-off events. For 169/187 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 359 event pairs, 0 based on Foata normal form. 5/117 useless extension candidates. Maximal degree in co-relation 248. Up to 18 conditions per place. [2020-10-11 18:34:46,937 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 12 selfloop transitions, 3 changer transitions 11/69 dead transitions. [2020-10-11 18:34:46,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 320 flow [2020-10-11 18:34:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:34:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:34:46,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 539 transitions. [2020-10-11 18:34:46,939 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.880718954248366 [2020-10-11 18:34:46,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 539 transitions. [2020-10-11 18:34:46,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 539 transitions. [2020-10-11 18:34:46,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:46,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 539 transitions. [2020-10-11 18:34:46,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:34:46,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:34:46,943 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:34:46,943 INFO L185 Difference]: Start difference. First operand has 81 places, 55 transitions, 170 flow. Second operand 9 states and 539 transitions. [2020-10-11 18:34:46,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 320 flow [2020-10-11 18:34:46,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 268 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-11 18:34:46,948 INFO L241 Difference]: Finished difference. Result has 82 places, 54 transitions, 173 flow [2020-10-11 18:34:46,948 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=173, PETRI_PLACES=82, PETRI_TRANSITIONS=54} [2020-10-11 18:34:46,948 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2020-10-11 18:34:46,948 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 173 flow [2020-10-11 18:34:46,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:34:46,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:46,949 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:34:46,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:34:46,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:46,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:46,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1040210536, now seen corresponding path program 1 times [2020-10-11 18:34:46,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:46,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530506229] [2020-10-11 18:34:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:47,046 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 18:34:47,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530506229] [2020-10-11 18:34:47,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:47,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:34:47,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843733464] [2020-10-11 18:34:47,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:34:47,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:47,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:34:47,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:34:47,221 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:34:47,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 54 transitions, 173 flow. Second operand 7 states. [2020-10-11 18:34:47,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:47,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:34:47,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:47,331 INFO L129 PetriNetUnfolder]: 9/135 cut-off events. [2020-10-11 18:34:47,332 INFO L130 PetriNetUnfolder]: For 326/384 co-relation queries the response was YES. [2020-10-11 18:34:47,333 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 135 events. 9/135 cut-off events. For 326/384 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 499 event pairs, 4 based on Foata normal form. 7/139 useless extension candidates. Maximal degree in co-relation 321. Up to 26 conditions per place. [2020-10-11 18:34:47,334 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 9 selfloop transitions, 5 changer transitions 9/64 dead transitions. [2020-10-11 18:34:47,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 313 flow [2020-10-11 18:34:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:34:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:34:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 409 transitions. [2020-10-11 18:34:47,336 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8592436974789915 [2020-10-11 18:34:47,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 409 transitions. [2020-10-11 18:34:47,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 409 transitions. [2020-10-11 18:34:47,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:47,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 409 transitions. [2020-10-11 18:34:47,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:34:47,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:34:47,339 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:34:47,339 INFO L185 Difference]: Start difference. First operand has 82 places, 54 transitions, 173 flow. Second operand 7 states and 409 transitions. [2020-10-11 18:34:47,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 313 flow [2020-10-11 18:34:47,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 273 flow, removed 16 selfloop flow, removed 7 redundant places. [2020-10-11 18:34:47,344 INFO L241 Difference]: Finished difference. Result has 78 places, 54 transitions, 175 flow [2020-10-11 18:34:47,344 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2020-10-11 18:34:47,344 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2020-10-11 18:34:47,345 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 175 flow [2020-10-11 18:34:47,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:34:47,345 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:47,345 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:34:47,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:34:47,345 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1348202502, now seen corresponding path program 2 times [2020-10-11 18:34:47,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:47,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422817019] [2020-10-11 18:34:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:47,469 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 18:34:47,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422817019] [2020-10-11 18:34:47,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:47,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:34:47,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995064791] [2020-10-11 18:34:47,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:34:47,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:47,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:34:47,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:34:47,693 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 68 [2020-10-11 18:34:47,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 175 flow. Second operand 7 states. [2020-10-11 18:34:47,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:47,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 68 [2020-10-11 18:34:47,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:47,914 INFO L129 PetriNetUnfolder]: 18/131 cut-off events. [2020-10-11 18:34:47,914 INFO L130 PetriNetUnfolder]: For 254/285 co-relation queries the response was YES. [2020-10-11 18:34:47,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 131 events. 18/131 cut-off events. For 254/285 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 7 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 310. Up to 21 conditions per place. [2020-10-11 18:34:47,915 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 6 selfloop transitions, 4 changer transitions 14/66 dead transitions. [2020-10-11 18:34:47,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 280 flow [2020-10-11 18:34:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:34:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:34:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2020-10-11 18:34:47,919 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2020-10-11 18:34:47,919 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2020-10-11 18:34:47,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2020-10-11 18:34:47,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:47,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2020-10-11 18:34:47,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:34:47,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:34:47,922 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:34:47,923 INFO L185 Difference]: Start difference. First operand has 78 places, 54 transitions, 175 flow. Second operand 10 states and 584 transitions. [2020-10-11 18:34:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 280 flow [2020-10-11 18:34:47,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 250 flow, removed 10 selfloop flow, removed 6 redundant places. [2020-10-11 18:34:47,927 INFO L241 Difference]: Finished difference. Result has 86 places, 52 transitions, 176 flow [2020-10-11 18:34:47,927 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2020-10-11 18:34:47,927 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 23 predicate places. [2020-10-11 18:34:47,928 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 176 flow [2020-10-11 18:34:47,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:34:47,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:47,928 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 18:34:47,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:34:47,929 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:47,930 INFO L82 PathProgramCache]: Analyzing trace with hash 480233320, now seen corresponding path program 1 times [2020-10-11 18:34:47,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:47,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548560595] [2020-10-11 18:34:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:48,127 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 18:34:48,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548560595] [2020-10-11 18:34:48,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:48,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:34:48,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311236662] [2020-10-11 18:34:48,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:34:48,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:34:48,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:34:48,262 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:34:48,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 176 flow. Second operand 6 states. [2020-10-11 18:34:48,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:48,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:34:48,263 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:48,403 INFO L129 PetriNetUnfolder]: 102/309 cut-off events. [2020-10-11 18:34:48,405 INFO L130 PetriNetUnfolder]: For 229/233 co-relation queries the response was YES. [2020-10-11 18:34:48,407 INFO L80 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 309 events. 102/309 cut-off events. For 229/233 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1540 event pairs, 19 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 613. Up to 86 conditions per place. [2020-10-11 18:34:48,408 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 9 selfloop transitions, 5 changer transitions 21/77 dead transitions. [2020-10-11 18:34:48,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 296 flow [2020-10-11 18:34:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:34:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:34:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 532 transitions. [2020-10-11 18:34:48,411 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.869281045751634 [2020-10-11 18:34:48,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 532 transitions. [2020-10-11 18:34:48,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 532 transitions. [2020-10-11 18:34:48,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:48,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 532 transitions. [2020-10-11 18:34:48,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:34:48,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:34:48,414 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:34:48,415 INFO L185 Difference]: Start difference. First operand has 86 places, 52 transitions, 176 flow. Second operand 9 states and 532 transitions. [2020-10-11 18:34:48,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 296 flow [2020-10-11 18:34:48,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 268 flow, removed 8 selfloop flow, removed 11 redundant places. [2020-10-11 18:34:48,418 INFO L241 Difference]: Finished difference. Result has 83 places, 54 transitions, 198 flow [2020-10-11 18:34:48,419 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=54} [2020-10-11 18:34:48,419 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2020-10-11 18:34:48,419 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 54 transitions, 198 flow [2020-10-11 18:34:48,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:34:48,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:48,419 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 18:34:48,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:34:48,420 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash 255851924, now seen corresponding path program 1 times [2020-10-11 18:34:48,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:48,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40590020] [2020-10-11 18:34:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:48,504 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 18:34:48,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40590020] [2020-10-11 18:34:48,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:48,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:34:48,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247357941] [2020-10-11 18:34:48,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:34:48,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:48,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:34:48,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:34:48,668 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:34:48,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 54 transitions, 198 flow. Second operand 7 states. [2020-10-11 18:34:48,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:48,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:34:48,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:48,832 INFO L129 PetriNetUnfolder]: 45/174 cut-off events. [2020-10-11 18:34:48,833 INFO L130 PetriNetUnfolder]: For 280/319 co-relation queries the response was YES. [2020-10-11 18:34:48,834 INFO L80 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 174 events. 45/174 cut-off events. For 280/319 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 682 event pairs, 3 based on Foata normal form. 9/180 useless extension candidates. Maximal degree in co-relation 513. Up to 64 conditions per place. [2020-10-11 18:34:48,835 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 5 selfloop transitions, 7 changer transitions 25/79 dead transitions. [2020-10-11 18:34:48,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 449 flow [2020-10-11 18:34:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:34:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:34:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2020-10-11 18:34:48,838 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8661764705882353 [2020-10-11 18:34:48,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2020-10-11 18:34:48,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2020-10-11 18:34:48,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:48,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2020-10-11 18:34:48,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:34:48,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:34:48,842 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:34:48,842 INFO L185 Difference]: Start difference. First operand has 83 places, 54 transitions, 198 flow. Second operand 10 states and 589 transitions. [2020-10-11 18:34:48,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 449 flow [2020-10-11 18:34:48,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 422 flow, removed 8 selfloop flow, removed 6 redundant places. [2020-10-11 18:34:48,846 INFO L241 Difference]: Finished difference. Result has 88 places, 54 transitions, 220 flow [2020-10-11 18:34:48,847 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=220, PETRI_PLACES=88, PETRI_TRANSITIONS=54} [2020-10-11 18:34:48,847 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2020-10-11 18:34:48,847 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 54 transitions, 220 flow [2020-10-11 18:34:48,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:34:48,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:34:48,847 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:34:48,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:34:48,848 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:34:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:34:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash -368081319, now seen corresponding path program 1 times [2020-10-11 18:34:48,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:34:48,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561571322] [2020-10-11 18:34:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:34:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:34:48,941 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 18:34:48,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561571322] [2020-10-11 18:34:48,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:34:48,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:34:48,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828270318] [2020-10-11 18:34:48,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:34:48,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:34:48,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:34:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:34:49,132 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:34:49,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 54 transitions, 220 flow. Second operand 8 states. [2020-10-11 18:34:49,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:34:49,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:34:49,133 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:34:49,267 INFO L129 PetriNetUnfolder]: 4/63 cut-off events. [2020-10-11 18:34:49,268 INFO L130 PetriNetUnfolder]: For 180/197 co-relation queries the response was YES. [2020-10-11 18:34:49,268 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 63 events. 4/63 cut-off events. For 180/197 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 172. Up to 13 conditions per place. [2020-10-11 18:34:49,268 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-11 18:34:49,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 57 transitions, 308 flow [2020-10-11 18:34:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:34:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:34:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 628 transitions. [2020-10-11 18:34:49,271 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.839572192513369 [2020-10-11 18:34:49,271 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 628 transitions. [2020-10-11 18:34:49,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 628 transitions. [2020-10-11 18:34:49,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:34:49,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 628 transitions. [2020-10-11 18:34:49,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:34:49,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:34:49,275 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:34:49,276 INFO L185 Difference]: Start difference. First operand has 88 places, 54 transitions, 220 flow. Second operand 11 states and 628 transitions. [2020-10-11 18:34:49,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 57 transitions, 308 flow [2020-10-11 18:34:49,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 57 transitions, 233 flow, removed 27 selfloop flow, removed 15 redundant places. [2020-10-11 18:34:49,278 INFO L241 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2020-10-11 18:34:49,278 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2020-10-11 18:34:49,278 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2020-10-11 18:34:49,279 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2020-10-11 18:34:49,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:34:49,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:34:49,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:34:49 BasicIcfg [2020-10-11 18:34:49,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:34:49,287 INFO L168 Benchmark]: Toolchain (without parser) took 6012.10 ms. Allocated memory was 251.7 MB in the beginning and 413.7 MB in the end (delta: 162.0 MB). Free memory was 206.2 MB in the beginning and 355.8 MB in the end (delta: -149.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:34:49,288 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:34:49,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.71 ms. Allocated memory was 251.7 MB in the beginning and 320.3 MB in the end (delta: 68.7 MB). Free memory was 206.2 MB in the beginning and 275.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:34:49,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.55 ms. Allocated memory is still 320.3 MB. Free memory was 275.3 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:34:49,290 INFO L168 Benchmark]: Boogie Preprocessor took 27.92 ms. Allocated memory is still 320.3 MB. Free memory was 272.8 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:34:49,291 INFO L168 Benchmark]: RCFGBuilder took 390.01 ms. Allocated memory is still 320.3 MB. Free memory was 270.2 MB in the beginning and 248.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:34:49,292 INFO L168 Benchmark]: TraceAbstraction took 4799.00 ms. Allocated memory was 320.3 MB in the beginning and 413.7 MB in the end (delta: 93.3 MB). Free memory was 248.4 MB in the beginning and 355.8 MB in the end (delta: -107.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:34:49,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 740.71 ms. Allocated memory was 251.7 MB in the beginning and 320.3 MB in the end (delta: 68.7 MB). Free memory was 206.2 MB in the beginning and 275.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.55 ms. Allocated memory is still 320.3 MB. Free memory was 275.3 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.92 ms. Allocated memory is still 320.3 MB. Free memory was 272.8 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 390.01 ms. Allocated memory is still 320.3 MB. Free memory was 270.2 MB in the beginning and 248.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4799.00 ms. Allocated memory was 320.3 MB in the beginning and 413.7 MB in the end (delta: 93.3 MB). Free memory was 248.4 MB in the beginning and 355.8 MB in the end (delta: -107.4 MB). There was no memory consumed. 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, 67 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 238 SDslu, 567 SDs, 0 SdLazy, 601 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=8, 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, 0.9s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 353 ConstructedInterpolants, 0 QuantifiedInterpolants, 41329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...