/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/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:31:09,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:31:09,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:31:09,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:31:09,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:31:09,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:31:09,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:31:09,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:31:09,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:31:09,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:31:09,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:31:09,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:31:09,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:31:09,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:31:09,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:31:09,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:31:09,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:31:09,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:31:09,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:31:09,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:31:09,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:31:09,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:31:09,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:31:09,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:31:09,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:31:09,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:31:09,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:31:09,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:31:09,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:31:09,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:31:09,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:31:09,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:31:09,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:31:09,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:31:09,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:31:09,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:31:09,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:31:09,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:31:09,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:31:09,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:31:09,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:31:09,915 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 18:31:09,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:31:09,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:31:09,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:31:09,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:31:09,938 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:31:09,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:31:09,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:31:09,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:31:09,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:31:09,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:31:09,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:31:09,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:31:09,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:31:09,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:31:09,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:31:09,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:31:09,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:31:09,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:31:09,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:31:09,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:31:09,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:31:09,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:31:09,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:31:09,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:31:09,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:31:09,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:31:09,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:31:09,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:31:09,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:31:09,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:31:10,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:31:10,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:31:10,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:31:10,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:31:10,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:31:10,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-11 18:31:10,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12a4bb99/efa7d2e24fec42ffa394a59ac34db9fa/FLAG460165a23 [2020-10-11 18:31:10,912 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:31:10,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-11 18:31:10,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12a4bb99/efa7d2e24fec42ffa394a59ac34db9fa/FLAG460165a23 [2020-10-11 18:31:11,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12a4bb99/efa7d2e24fec42ffa394a59ac34db9fa [2020-10-11 18:31:11,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:31:11,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:31:11,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:11,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:31:11,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:31:11,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:11,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6779d787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11, skipping insertion in model container [2020-10-11 18:31:11,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:11,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:31:11,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:31:11,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:11,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:31:11,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:11,958 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:31:11,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11 WrapperNode [2020-10-11 18:31:11,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:11,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:11,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:31:11,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:31:11,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:11,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:12,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:31:12,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:31:12,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:31:12,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (1/1) ... [2020-10-11 18:31:12,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:31:12,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:31:12,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:31:12,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:31:12,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (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 [2020-10-11 18:31:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:31:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:31:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:31:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:31:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:31:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:31:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:31:12,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:31:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:31:12,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:31:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:31:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:31:12,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:31:12,116 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 18:31:12,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:31:12,470 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:31:12,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:12 BoogieIcfgContainer [2020-10-11 18:31:12,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:31:12,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:31:12,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:31:12,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:31:12,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:31:11" (1/3) ... [2020-10-11 18:31:12,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285e44a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:12, skipping insertion in model container [2020-10-11 18:31:12,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:11" (2/3) ... [2020-10-11 18:31:12,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285e44a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:12, skipping insertion in model container [2020-10-11 18:31:12,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:12" (3/3) ... [2020-10-11 18:31:12,482 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-10-11 18:31:12,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:31:12,501 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:31:12,502 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:31:12,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,535 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,547 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:12,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:31:12,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:31:12,591 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:31:12,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:31:12,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:31:12,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:31:12,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:31:12,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:31:12,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:31:12,606 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:31:12,649 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:31:12,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:12,655 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:31:12,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:31:12,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:31:12,681 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:31:12,681 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:12,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:12,682 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] [2020-10-11 18:31:12,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:12,692 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-11 18:31:12,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:12,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550253707] [2020-10-11 18:31:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:13,139 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 18:31:13,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550253707] [2020-10-11 18:31:13,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:13,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:13,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974154351] [2020-10-11 18:31:13,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:13,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:13,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:13,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:13,398 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:31:13,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:31:13,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:13,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:31:13,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:13,577 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2020-10-11 18:31:13,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:13,578 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 70 events. 3/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 4/73 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-11 18:31:13,580 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-11 18:31:13,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-11 18:31:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-11 18:31:13,600 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-11 18:31:13,601 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-11 18:31:13,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-11 18:31:13,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:13,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-11 18:31:13,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:13,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:13,622 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:13,625 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-11 18:31:13,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-11 18:31:13,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:31:13,635 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:31:13,638 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, 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=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:31:13,639 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:31:13,640 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:31:13,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:13,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:13,640 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] [2020-10-11 18:31:13,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:31:13,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:13,641 INFO L82 PathProgramCache]: Analyzing trace with hash -6847167, now seen corresponding path program 1 times [2020-10-11 18:31:13,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:13,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904135977] [2020-10-11 18:31:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:13,832 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 18:31:13,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904135977] [2020-10-11 18:31:13,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:13,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:13,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381889540] [2020-10-11 18:31:13,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:13,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:13,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:14,020 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:31:14,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 6 states. [2020-10-11 18:31:14,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:14,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:31:14,021 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:14,142 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:31:14,142 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:31:14,143 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 69 events. 3/69 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2020-10-11 18:31:14,143 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:31:14,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-11 18:31:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:31:14,147 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:31:14,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:31:14,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:31:14,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:14,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:31:14,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:14,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:14,151 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:14,151 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:31:14,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-11 18:31:14,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:31:14,156 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-11 18:31:14,156 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:31:14,157 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:31:14,157 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-11 18:31:14,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:14,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:14,158 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 18:31:14,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:31:14,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1974528386, now seen corresponding path program 1 times [2020-10-11 18:31:14,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:14,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596328563] [2020-10-11 18:31:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:14,301 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 18:31:14,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596328563] [2020-10-11 18:31:14,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:14,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:14,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96477330] [2020-10-11 18:31:14,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:14,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:14,592 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:14,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 7 states. [2020-10-11 18:31:14,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:14,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:14,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:14,791 INFO L129 PetriNetUnfolder]: 30/145 cut-off events. [2020-10-11 18:31:14,792 INFO L130 PetriNetUnfolder]: For 51/73 co-relation queries the response was YES. [2020-10-11 18:31:14,794 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 145 events. 30/145 cut-off events. For 51/73 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 5 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 264. Up to 31 conditions per place. [2020-10-11 18:31:14,795 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 5 changer transitions 21/79 dead transitions. [2020-10-11 18:31:14,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 287 flow [2020-10-11 18:31:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:31:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:31:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 608 transitions. [2020-10-11 18:31:14,798 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8685714285714285 [2020-10-11 18:31:14,799 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 608 transitions. [2020-10-11 18:31:14,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 608 transitions. [2020-10-11 18:31:14,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:14,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 608 transitions. [2020-10-11 18:31:14,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:31:14,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:31:14,803 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:31:14,803 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 10 states and 608 transitions. [2020-10-11 18:31:14,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 287 flow [2020-10-11 18:31:14,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 253 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:31:14,809 INFO L241 Difference]: Finished difference. Result has 80 places, 56 transitions, 176 flow [2020-10-11 18:31:14,809 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2020-10-11 18:31:14,810 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:31:14,810 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 176 flow [2020-10-11 18:31:14,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:14,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:14,810 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 18:31:14,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:31:14,811 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1757534868, now seen corresponding path program 1 times [2020-10-11 18:31:14,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:14,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476264730] [2020-10-11 18:31:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:14,986 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 18:31:14,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476264730] [2020-10-11 18:31:14,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:14,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:14,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386308279] [2020-10-11 18:31:14,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:14,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:14,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:14,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:15,214 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:15,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 176 flow. Second operand 7 states. [2020-10-11 18:31:15,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:15,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:15,215 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:15,323 INFO L129 PetriNetUnfolder]: 14/112 cut-off events. [2020-10-11 18:31:15,323 INFO L130 PetriNetUnfolder]: For 185/228 co-relation queries the response was YES. [2020-10-11 18:31:15,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 112 events. 14/112 cut-off events. For 185/228 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 333 event pairs, 5 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 276. Up to 25 conditions per place. [2020-10-11 18:31:15,325 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 7 selfloop transitions, 4 changer transitions 14/68 dead transitions. [2020-10-11 18:31:15,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 323 flow [2020-10-11 18:31:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:31:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:31:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 425 transitions. [2020-10-11 18:31:15,328 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8673469387755102 [2020-10-11 18:31:15,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 425 transitions. [2020-10-11 18:31:15,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 425 transitions. [2020-10-11 18:31:15,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:15,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 425 transitions. [2020-10-11 18:31:15,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:31:15,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:31:15,332 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:31:15,332 INFO L185 Difference]: Start difference. First operand has 80 places, 56 transitions, 176 flow. Second operand 7 states and 425 transitions. [2020-10-11 18:31:15,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 323 flow [2020-10-11 18:31:15,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 294 flow, removed 11 selfloop flow, removed 5 redundant places. [2020-10-11 18:31:15,338 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 166 flow [2020-10-11 18:31:15,338 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-11 18:31:15,338 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:31:15,339 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 166 flow [2020-10-11 18:31:15,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:15,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:15,339 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 18:31:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:31:15,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1145731939, now seen corresponding path program 1 times [2020-10-11 18:31:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:15,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567844350] [2020-10-11 18:31:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:15,438 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 18:31:15,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567844350] [2020-10-11 18:31:15,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:15,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:15,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958651409] [2020-10-11 18:31:15,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:15,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:15,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:15,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:15,686 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:15,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 166 flow. Second operand 7 states. [2020-10-11 18:31:15,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:15,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:15,687 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:15,828 INFO L129 PetriNetUnfolder]: 4/75 cut-off events. [2020-10-11 18:31:15,829 INFO L130 PetriNetUnfolder]: For 99/107 co-relation queries the response was YES. [2020-10-11 18:31:15,830 INFO L80 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 75 events. 4/75 cut-off events. For 99/107 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 4/79 useless extension candidates. Maximal degree in co-relation 164. Up to 11 conditions per place. [2020-10-11 18:31:15,830 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 13/67 dead transitions. [2020-10-11 18:31:15,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 67 transitions, 306 flow [2020-10-11 18:31:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:31:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:31:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 653 transitions. [2020-10-11 18:31:15,837 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8480519480519481 [2020-10-11 18:31:15,837 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 653 transitions. [2020-10-11 18:31:15,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 653 transitions. [2020-10-11 18:31:15,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:15,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 653 transitions. [2020-10-11 18:31:15,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:31:15,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:31:15,841 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:31:15,841 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 166 flow. Second operand 11 states and 653 transitions. [2020-10-11 18:31:15,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 67 transitions, 306 flow [2020-10-11 18:31:15,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 67 transitions, 266 flow, removed 15 selfloop flow, removed 7 redundant places. [2020-10-11 18:31:15,845 INFO L241 Difference]: Finished difference. Result has 88 places, 54 transitions, 170 flow [2020-10-11 18:31:15,846 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=88, PETRI_TRANSITIONS=54} [2020-10-11 18:31:15,846 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-11 18:31:15,846 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 54 transitions, 170 flow [2020-10-11 18:31:15,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:15,846 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:15,847 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 18:31:15,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:31:15,847 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash -725384443, now seen corresponding path program 1 times [2020-10-11 18:31:15,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:15,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058229640] [2020-10-11 18:31:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:15,939 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 18:31:15,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058229640] [2020-10-11 18:31:15,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:15,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:15,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391180867] [2020-10-11 18:31:15,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:15,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:15,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:16,199 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:31:16,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 54 transitions, 170 flow. Second operand 7 states. [2020-10-11 18:31:16,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:16,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:31:16,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:16,326 INFO L129 PetriNetUnfolder]: 4/60 cut-off events. [2020-10-11 18:31:16,326 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2020-10-11 18:31:16,326 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 60 events. 4/60 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2020-10-11 18:31:16,327 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-11 18:31:16,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 228 flow [2020-10-11 18:31:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:31:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:31:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 598 transitions. [2020-10-11 18:31:16,330 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8542857142857143 [2020-10-11 18:31:16,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 598 transitions. [2020-10-11 18:31:16,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 598 transitions. [2020-10-11 18:31:16,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:16,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 598 transitions. [2020-10-11 18:31:16,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:31:16,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:31:16,334 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:31:16,334 INFO L185 Difference]: Start difference. First operand has 88 places, 54 transitions, 170 flow. Second operand 10 states and 598 transitions. [2020-10-11 18:31:16,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 228 flow [2020-10-11 18:31:16,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 174 flow, removed 23 selfloop flow, removed 12 redundant places. [2020-10-11 18:31:16,337 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:31:16,337 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:31:16,337 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:31:16,337 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:31:16,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:16,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:31:16,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:31:16 BasicIcfg [2020-10-11 18:31:16,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:31:16,347 INFO L168 Benchmark]: Toolchain (without parser) took 5134.62 ms. Allocated memory was 250.1 MB in the beginning and 428.9 MB in the end (delta: 178.8 MB). Free memory was 206.7 MB in the beginning and 351.3 MB in the end (delta: -144.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,347 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.25 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.9 MB in the beginning and 265.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 311.4 MB. Free memory was 265.9 MB in the beginning and 264.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,350 INFO L168 Benchmark]: Boogie Preprocessor took 28.35 ms. Allocated memory is still 311.4 MB. Free memory was 264.3 MB in the beginning and 262.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,351 INFO L168 Benchmark]: RCFGBuilder took 439.29 ms. Allocated memory is still 311.4 MB. Free memory was 262.6 MB in the beginning and 239.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,352 INFO L168 Benchmark]: TraceAbstraction took 3869.71 ms. Allocated memory was 311.4 MB in the beginning and 428.9 MB in the end (delta: 117.4 MB). Free memory was 239.0 MB in the beginning and 351.3 MB in the end (delta: -112.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:16,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 746.25 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.9 MB in the beginning and 265.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 311.4 MB. Free memory was 265.9 MB in the beginning and 264.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.35 ms. Allocated memory is still 311.4 MB. Free memory was 264.3 MB in the beginning and 262.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 439.29 ms. Allocated memory is still 311.4 MB. Free memory was 262.6 MB in the beginning and 239.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3869.71 ms. Allocated memory was 311.4 MB in the beginning and 428.9 MB in the end (delta: 117.4 MB). Free memory was 239.0 MB in the beginning and 351.3 MB in the end (delta: -112.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 198 SDslu, 551 SDs, 0 SdLazy, 435 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 28258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...