/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:05:51,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:05:51,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:05:51,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:05:51,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:05:51,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:05:51,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:05:51,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:05:51,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:05:51,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:05:51,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:05:51,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:05:51,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:05:51,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:05:51,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:05:51,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:05:51,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:05:51,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:05:51,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:05:51,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:05:51,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:05:51,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:05:51,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:05:51,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:05:51,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:05:51,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:05:51,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:05:51,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:05:51,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:05:51,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:05:51,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:05:51,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:05:51,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:05:51,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:05:51,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:05:51,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:05:51,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:05:51,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:05:51,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:05:51,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:05:51,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:05:51,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:05:51,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:05:51,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:05:51,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:05:51,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:05:51,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:05:51,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:05:51,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:05:51,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:05:51,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:05:51,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:05:51,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:05:51,716 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:05:52,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:05:52,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:05:52,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:05:52,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:05:52,103 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:05:52,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-03-25 05:05:52,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03b2a82c/ce321e0a79e24c3080a74ff7882df5e1/FLAG457ac0303 [2021-03-25 05:05:52,517 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:05:52,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-03-25 05:05:52,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03b2a82c/ce321e0a79e24c3080a74ff7882df5e1/FLAG457ac0303 [2021-03-25 05:05:52,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03b2a82c/ce321e0a79e24c3080a74ff7882df5e1 [2021-03-25 05:05:52,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:05:52,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:05:52,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:05:52,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:05:52,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:05:52,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:05:52" (1/1) ... [2021-03-25 05:05:52,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34729b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:52, skipping insertion in model container [2021-03-25 05:05:52,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:05:52" (1/1) ... [2021-03-25 05:05:52,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:05:52,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:05:53,057 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-03-25 05:05:53,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:05:53,209 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:05:53,217 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-03-25 05:05:53,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:05:53,300 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:05:53,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53 WrapperNode [2021-03-25 05:05:53,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:05:53,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:05:53,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:05:53,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:05:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:05:53,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:05:53,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:05:53,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:05:53,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (1/1) ... [2021-03-25 05:05:53,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:05:53,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:05:53,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:05:53,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:05:53,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (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 [2021-03-25 05:05:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:05:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:05:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:05:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:05:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:05:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:05:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:05:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:05:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:05:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:05:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:05:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:05:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:05:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:05:53,460 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:05:53,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:05:53,786 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:05:53,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:05:53 BoogieIcfgContainer [2021-03-25 05:05:53,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:05:53,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:05:53,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:05:53,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:05:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:05:52" (1/3) ... [2021-03-25 05:05:53,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ef029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:05:53, skipping insertion in model container [2021-03-25 05:05:53,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:05:53" (2/3) ... [2021-03-25 05:05:53,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ef029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:05:53, skipping insertion in model container [2021-03-25 05:05:53,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:05:53" (3/3) ... [2021-03-25 05:05:53,793 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2021-03-25 05:05:53,796 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:05:53,799 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:05:53,800 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:05:53,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,824 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,824 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,828 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:05:53,830 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:05:53,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:05:53,857 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:05:53,857 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:05:53,857 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:05:53,857 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:05:53,857 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:05:53,857 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:05:53,857 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:05:53,857 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:05:53,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:05:53,886 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:05:53,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:05:53,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:05:53,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:05:53,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:05:53,893 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:53,899 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:05:53,901 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:05:53,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:05:53,912 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:05:53,913 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:05:53,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:05:53,915 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:05:55,097 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 05:05:55,097 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:05:55,099 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1207 [2021-03-25 05:05:55,106 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:05:55,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:05:55,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:55,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:55,107 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:55,112 INFO L82 PathProgramCache]: Analyzing trace with hash 775848287, now seen corresponding path program 1 times [2021-03-25 05:05:55,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:55,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311716169] [2021-03-25 05:05:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:55,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:55,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:55,375 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:05:55,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:05:55,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:55,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:55,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311716169] [2021-03-25 05:05:55,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:55,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:05:55,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31539057] [2021-03-25 05:05:55,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:05:55,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:05:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:05:55,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-25 05:05:55,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:55,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-25 05:05:55,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:55,489 INFO L129 PetriNetUnfolder]: 53/143 cut-off events. [2021-03-25 05:05:55,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:05:55,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 143 events. 53/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 577 event pairs, 9 based on Foata normal form. 16/153 useless extension candidates. Maximal degree in co-relation 250. Up to 57 conditions per place. [2021-03-25 05:05:55,491 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 8 selfloop transitions, 5 changer transitions 10/36 dead transitions. [2021-03-25 05:05:55,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 127 flow [2021-03-25 05:05:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:05:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:05:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2021-03-25 05:05:55,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7906403940886699 [2021-03-25 05:05:55,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2021-03-25 05:05:55,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2021-03-25 05:05:55,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:55,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2021-03-25 05:05:55,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,520 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,522 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 642 transitions. [2021-03-25 05:05:55,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 127 flow [2021-03-25 05:05:55,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:05:55,526 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 96 flow [2021-03-25 05:05:55,528 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2021-03-25 05:05:55,528 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:05:55,528 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:55,529 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 24 transitions, 96 flow [2021-03-25 05:05:55,529 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 24 transitions, 96 flow [2021-03-25 05:05:55,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 24 transitions, 96 flow [2021-03-25 05:05:55,539 INFO L129 PetriNetUnfolder]: 28/103 cut-off events. [2021-03-25 05:05:55,539 INFO L130 PetriNetUnfolder]: For 66/70 co-relation queries the response was YES. [2021-03-25 05:05:55,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 103 events. 28/103 cut-off events. For 66/70 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 438 event pairs, 16 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 236. Up to 43 conditions per place. [2021-03-25 05:05:55,541 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 05:05:55,767 INFO L154 LiptonReduction]: Checked pairs total: 306 [2021-03-25 05:05:55,767 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:05:55,767 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 239 [2021-03-25 05:05:55,768 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 92 flow [2021-03-25 05:05:55,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:55,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:55,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:05:55,769 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1718526481, now seen corresponding path program 1 times [2021-03-25 05:05:55,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:55,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945832734] [2021-03-25 05:05:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:55,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:55,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:05:55,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:55,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:55,888 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:05:55,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:05:55,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:55,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:55,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945832734] [2021-03-25 05:05:55,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:55,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:05:55,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622609275] [2021-03-25 05:05:55,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:05:55,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:55,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:05:55,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:05:55,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2021-03-25 05:05:55,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:55,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:55,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2021-03-25 05:05:55,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:55,997 INFO L129 PetriNetUnfolder]: 76/211 cut-off events. [2021-03-25 05:05:55,997 INFO L130 PetriNetUnfolder]: For 297/321 co-relation queries the response was YES. [2021-03-25 05:05:56,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 211 events. 76/211 cut-off events. For 297/321 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1034 event pairs, 4 based on Foata normal form. 24/233 useless extension candidates. Maximal degree in co-relation 636. Up to 75 conditions per place. [2021-03-25 05:05:56,002 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 14 selfloop transitions, 15 changer transitions 17/57 dead transitions. [2021-03-25 05:05:56,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 388 flow [2021-03-25 05:05:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 05:05:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 05:05:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 797 transitions. [2021-03-25 05:05:56,008 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7504708097928436 [2021-03-25 05:05:56,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 797 transitions. [2021-03-25 05:05:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 797 transitions. [2021-03-25 05:05:56,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:56,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 797 transitions. [2021-03-25 05:05:56,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,012 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,012 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 92 flow. Second operand 9 states and 797 transitions. [2021-03-25 05:05:56,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 388 flow [2021-03-25 05:05:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 367 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-25 05:05:56,018 INFO L241 Difference]: Finished difference. Result has 49 places, 33 transitions, 244 flow [2021-03-25 05:05:56,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2021-03-25 05:05:56,019 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:05:56,019 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:56,019 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 33 transitions, 244 flow [2021-03-25 05:05:56,019 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 33 transitions, 244 flow [2021-03-25 05:05:56,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 33 transitions, 244 flow [2021-03-25 05:05:56,044 INFO L129 PetriNetUnfolder]: 35/118 cut-off events. [2021-03-25 05:05:56,044 INFO L130 PetriNetUnfolder]: For 333/338 co-relation queries the response was YES. [2021-03-25 05:05:56,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 118 events. 35/118 cut-off events. For 333/338 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 534 event pairs, 3 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 464. Up to 44 conditions per place. [2021-03-25 05:05:56,046 INFO L142 LiptonReduction]: Number of co-enabled transitions 212 [2021-03-25 05:05:56,226 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:05:56,478 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:05:56,575 INFO L154 LiptonReduction]: Checked pairs total: 436 [2021-03-25 05:05:56,575 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:05:56,576 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 557 [2021-03-25 05:05:56,576 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 242 flow [2021-03-25 05:05:56,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,577 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:56,577 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:56,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:05:56,577 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:56,578 INFO L82 PathProgramCache]: Analyzing trace with hash 336823822, now seen corresponding path program 1 times [2021-03-25 05:05:56,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:56,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650572718] [2021-03-25 05:05:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:56,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:56,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650572718] [2021-03-25 05:05:56,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:56,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:05:56,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971930117] [2021-03-25 05:05:56,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:05:56,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:56,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:05:56,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:05:56,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-25 05:05:56,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:56,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-25 05:05:56,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:56,669 INFO L129 PetriNetUnfolder]: 37/141 cut-off events. [2021-03-25 05:05:56,669 INFO L130 PetriNetUnfolder]: For 500/521 co-relation queries the response was YES. [2021-03-25 05:05:56,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 141 events. 37/141 cut-off events. For 500/521 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 718 event pairs, 8 based on Foata normal form. 14/153 useless extension candidates. Maximal degree in co-relation 577. Up to 54 conditions per place. [2021-03-25 05:05:56,670 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 2 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2021-03-25 05:05:56,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 309 flow [2021-03-25 05:05:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:05:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:05:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2021-03-25 05:05:56,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.788515406162465 [2021-03-25 05:05:56,672 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2021-03-25 05:05:56,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2021-03-25 05:05:56,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:56,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2021-03-25 05:05:56,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,675 INFO L185 Difference]: Start difference. First operand has 44 places, 32 transitions, 242 flow. Second operand 6 states and 563 transitions. [2021-03-25 05:05:56,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 309 flow [2021-03-25 05:05:56,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 283 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-25 05:05:56,679 INFO L241 Difference]: Finished difference. Result has 49 places, 24 transitions, 164 flow [2021-03-25 05:05:56,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=24} [2021-03-25 05:05:56,680 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:05:56,680 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:56,680 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 24 transitions, 164 flow [2021-03-25 05:05:56,680 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 24 transitions, 164 flow [2021-03-25 05:05:56,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 24 transitions, 164 flow [2021-03-25 05:05:56,685 INFO L129 PetriNetUnfolder]: 8/56 cut-off events. [2021-03-25 05:05:56,685 INFO L130 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2021-03-25 05:05:56,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 56 events. 8/56 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 4 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 190. Up to 16 conditions per place. [2021-03-25 05:05:56,686 INFO L142 LiptonReduction]: Number of co-enabled transitions 144 [2021-03-25 05:05:56,712 INFO L154 LiptonReduction]: Checked pairs total: 300 [2021-03-25 05:05:56,712 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:05:56,712 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 05:05:56,713 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 168 flow [2021-03-25 05:05:56,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:56,713 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:56,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:05:56,713 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:56,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1280394141, now seen corresponding path program 1 times [2021-03-25 05:05:56,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:56,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202220977] [2021-03-25 05:05:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:56,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:05:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:56,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202220977] [2021-03-25 05:05:56,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:56,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:05:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641619410] [2021-03-25 05:05:56,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:05:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:56,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:05:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:05:56,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 120 [2021-03-25 05:05:56,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 24 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:56,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 120 [2021-03-25 05:05:56,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:56,802 INFO L129 PetriNetUnfolder]: 73/187 cut-off events. [2021-03-25 05:05:56,802 INFO L130 PetriNetUnfolder]: For 733/805 co-relation queries the response was YES. [2021-03-25 05:05:56,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 187 events. 73/187 cut-off events. For 733/805 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 969 event pairs, 32 based on Foata normal form. 20/191 useless extension candidates. Maximal degree in co-relation 572. Up to 106 conditions per place. [2021-03-25 05:05:56,804 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 7 changer transitions 2/34 dead transitions. [2021-03-25 05:05:56,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 220 flow [2021-03-25 05:05:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:05:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:05:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-03-25 05:05:56,806 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2021-03-25 05:05:56,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-03-25 05:05:56,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-03-25 05:05:56,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:56,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-03-25 05:05:56,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,810 INFO L185 Difference]: Start difference. First operand has 46 places, 24 transitions, 168 flow. Second operand 5 states and 458 transitions. [2021-03-25 05:05:56,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 220 flow [2021-03-25 05:05:56,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 179 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-03-25 05:05:56,812 INFO L241 Difference]: Finished difference. Result has 45 places, 30 transitions, 181 flow [2021-03-25 05:05:56,812 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2021-03-25 05:05:56,812 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2021-03-25 05:05:56,813 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:56,813 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 30 transitions, 181 flow [2021-03-25 05:05:56,813 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 30 transitions, 181 flow [2021-03-25 05:05:56,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 30 transitions, 181 flow [2021-03-25 05:05:56,827 INFO L129 PetriNetUnfolder]: 69/180 cut-off events. [2021-03-25 05:05:56,827 INFO L130 PetriNetUnfolder]: For 399/461 co-relation queries the response was YES. [2021-03-25 05:05:56,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 180 events. 69/180 cut-off events. For 399/461 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 937 event pairs, 32 based on Foata normal form. 4/167 useless extension candidates. Maximal degree in co-relation 588. Up to 112 conditions per place. [2021-03-25 05:05:56,829 INFO L142 LiptonReduction]: Number of co-enabled transitions 206 [2021-03-25 05:05:56,832 INFO L154 LiptonReduction]: Checked pairs total: 111 [2021-03-25 05:05:56,832 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:05:56,833 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 05:05:56,834 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 175 flow [2021-03-25 05:05:56,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:56,834 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:56,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:05:56,835 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash -109417945, now seen corresponding path program 1 times [2021-03-25 05:05:56,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:56,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423969586] [2021-03-25 05:05:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:56,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:05:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:56,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423969586] [2021-03-25 05:05:56,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:56,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:05:56,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167796923] [2021-03-25 05:05:56,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:05:56,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:05:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:05:56,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 120 [2021-03-25 05:05:56,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:56,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 120 [2021-03-25 05:05:56,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:56,945 INFO L129 PetriNetUnfolder]: 38/120 cut-off events. [2021-03-25 05:05:56,945 INFO L130 PetriNetUnfolder]: For 450/552 co-relation queries the response was YES. [2021-03-25 05:05:56,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 120 events. 38/120 cut-off events. For 450/552 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 548 event pairs, 5 based on Foata normal form. 38/150 useless extension candidates. Maximal degree in co-relation 453. Up to 83 conditions per place. [2021-03-25 05:05:56,946 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 10 changer transitions 4/37 dead transitions. [2021-03-25 05:05:56,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 259 flow [2021-03-25 05:05:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:05:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:05:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2021-03-25 05:05:56,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7625 [2021-03-25 05:05:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2021-03-25 05:05:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2021-03-25 05:05:56,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:56,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2021-03-25 05:05:56,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,955 INFO L185 Difference]: Start difference. First operand has 45 places, 29 transitions, 175 flow. Second operand 6 states and 549 transitions. [2021-03-25 05:05:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 259 flow [2021-03-25 05:05:56,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 247 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 05:05:56,956 INFO L241 Difference]: Finished difference. Result has 48 places, 33 transitions, 231 flow [2021-03-25 05:05:56,956 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2021-03-25 05:05:56,957 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 05:05:56,957 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:56,957 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 33 transitions, 231 flow [2021-03-25 05:05:56,957 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 33 transitions, 231 flow [2021-03-25 05:05:56,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 33 transitions, 231 flow [2021-03-25 05:05:56,964 INFO L129 PetriNetUnfolder]: 30/112 cut-off events. [2021-03-25 05:05:56,964 INFO L130 PetriNetUnfolder]: For 309/393 co-relation queries the response was YES. [2021-03-25 05:05:56,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 112 events. 30/112 cut-off events. For 309/393 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 544 event pairs, 5 based on Foata normal form. 5/110 useless extension candidates. Maximal degree in co-relation 448. Up to 76 conditions per place. [2021-03-25 05:05:56,965 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 05:05:56,968 INFO L154 LiptonReduction]: Checked pairs total: 109 [2021-03-25 05:05:56,968 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:05:56,968 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:05:56,968 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 223 flow [2021-03-25 05:05:56,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:56,968 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:56,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:56,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:05:56,969 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash -199067673, now seen corresponding path program 1 times [2021-03-25 05:05:56,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:56,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049284976] [2021-03-25 05:05:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:56,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:56,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:56,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:57,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:57,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:05:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:57,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049284976] [2021-03-25 05:05:57,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:57,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:05:57,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407361724] [2021-03-25 05:05:57,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:05:57,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:57,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:05:57,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:05:57,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 120 [2021-03-25 05:05:57,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:57,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 120 [2021-03-25 05:05:57,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:57,052 INFO L129 PetriNetUnfolder]: 19/72 cut-off events. [2021-03-25 05:05:57,053 INFO L130 PetriNetUnfolder]: For 263/317 co-relation queries the response was YES. [2021-03-25 05:05:57,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 72 events. 19/72 cut-off events. For 263/317 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 236 event pairs, 0 based on Foata normal form. 25/92 useless extension candidates. Maximal degree in co-relation 313. Up to 48 conditions per place. [2021-03-25 05:05:57,053 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 2 selfloop transitions, 11 changer transitions 3/34 dead transitions. [2021-03-25 05:05:57,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 267 flow [2021-03-25 05:05:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:05:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:05:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2021-03-25 05:05:57,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-03-25 05:05:57,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2021-03-25 05:05:57,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2021-03-25 05:05:57,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:57,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2021-03-25 05:05:57,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,058 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 223 flow. Second operand 7 states and 634 transitions. [2021-03-25 05:05:57,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 267 flow [2021-03-25 05:05:57,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 237 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-25 05:05:57,059 INFO L241 Difference]: Finished difference. Result has 51 places, 31 transitions, 217 flow [2021-03-25 05:05:57,059 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2021-03-25 05:05:57,059 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:05:57,060 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:57,060 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 31 transitions, 217 flow [2021-03-25 05:05:57,060 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 31 transitions, 217 flow [2021-03-25 05:05:57,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 31 transitions, 217 flow [2021-03-25 05:05:57,064 INFO L129 PetriNetUnfolder]: 15/66 cut-off events. [2021-03-25 05:05:57,064 INFO L130 PetriNetUnfolder]: For 144/155 co-relation queries the response was YES. [2021-03-25 05:05:57,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 66 events. 15/66 cut-off events. For 144/155 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 224 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 255. Up to 29 conditions per place. [2021-03-25 05:05:57,065 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 05:05:57,205 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-25 05:05:57,206 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:05:57,206 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146 [2021-03-25 05:05:57,206 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 203 flow [2021-03-25 05:05:57,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:05:57,207 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:05:57,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:05:57,207 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:05:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:05:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1857494812, now seen corresponding path program 1 times [2021-03-25 05:05:57,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:05:57,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046973714] [2021-03-25 05:05:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:05:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:05:57,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:57,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:05:57,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:57,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:57,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:57,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:57,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:05:57,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:05:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:05:57,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046973714] [2021-03-25 05:05:57,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:05:57,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:05:57,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149364088] [2021-03-25 05:05:57,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:05:57,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:05:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:05:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:05:57,245 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 122 [2021-03-25 05:05:57,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:05:57,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 122 [2021-03-25 05:05:57,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:05:57,260 INFO L129 PetriNetUnfolder]: 20/68 cut-off events. [2021-03-25 05:05:57,260 INFO L130 PetriNetUnfolder]: For 299/318 co-relation queries the response was YES. [2021-03-25 05:05:57,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 68 events. 20/68 cut-off events. For 299/318 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 230 event pairs, 0 based on Foata normal form. 8/71 useless extension candidates. Maximal degree in co-relation 271. Up to 29 conditions per place. [2021-03-25 05:05:57,261 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-25 05:05:57,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 28 transitions, 197 flow [2021-03-25 05:05:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:05:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:05:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-25 05:05:57,262 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7725409836065574 [2021-03-25 05:05:57,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-25 05:05:57,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-25 05:05:57,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:05:57,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-25 05:05:57,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,264 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 203 flow. Second operand 4 states and 377 transitions. [2021-03-25 05:05:57,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 28 transitions, 197 flow [2021-03-25 05:05:57,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 137 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-25 05:05:57,265 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-25 05:05:57,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-25 05:05:57,265 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-25 05:05:57,265 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:05:57,265 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 05:05:57,266 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 05:05:57,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:05:57,266 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:05:57,266 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:05:57,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:05:57,266 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:05:57,266 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:05:57,266 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:05:57,266 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:05:57,267 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:05:57,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:05:57,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:05:57,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:05:57 BasicIcfg [2021-03-25 05:05:57,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:05:57,271 INFO L168 Benchmark]: Toolchain (without parser) took 4374.77 ms. Allocated memory was 381.7 MB in the beginning and 474.0 MB in the end (delta: 92.3 MB). Free memory was 345.1 MB in the beginning and 221.2 MB in the end (delta: 123.9 MB). Peak memory consumption was 218.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,271 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 362.8 MB in the beginning and 362.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:05:57,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.74 ms. Allocated memory is still 381.7 MB. Free memory was 344.8 MB in the beginning and 343.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 341.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,272 INFO L168 Benchmark]: Boogie Preprocessor took 26.09 ms. Allocated memory is still 381.7 MB. Free memory was 341.7 MB in the beginning and 340.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,272 INFO L168 Benchmark]: RCFGBuilder took 413.59 ms. Allocated memory is still 381.7 MB. Free memory was 340.6 MB in the beginning and 316.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,272 INFO L168 Benchmark]: TraceAbstraction took 3480.94 ms. Allocated memory was 381.7 MB in the beginning and 474.0 MB in the end (delta: 92.3 MB). Free memory was 315.5 MB in the beginning and 221.2 MB in the end (delta: 94.3 MB). Peak memory consumption was 187.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:05:57,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 362.8 MB in the beginning and 362.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 405.74 ms. Allocated memory is still 381.7 MB. Free memory was 344.8 MB in the beginning and 343.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 341.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.09 ms. Allocated memory is still 381.7 MB. Free memory was 341.7 MB in the beginning and 340.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 413.59 ms. Allocated memory is still 381.7 MB. Free memory was 340.6 MB in the beginning and 316.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3480.94 ms. Allocated memory was 381.7 MB in the beginning and 474.0 MB in the end (delta: 92.3 MB). Free memory was 315.5 MB in the beginning and 221.2 MB in the end (delta: 94.3 MB). Peak memory consumption was 187.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1196.4ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 815, positive: 768, positive conditional: 0, positive unconditional: 768, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 452, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 452, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 815, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 452, unknown conditional: 0, unknown unconditional: 452] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 238.2ms, 40 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 22 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 123, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 123, positive: 91, positive conditional: 0, positive unconditional: 91, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 556.2ms, 49 PlacesBefore, 44 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 212 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 134, positive: 110, positive conditional: 0, positive unconditional: 110, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 134, positive: 109, positive conditional: 0, positive unconditional: 109, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.6ms, 49 PlacesBefore, 46 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 300 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 122, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 122, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.5ms, 45 PlacesBefore, 45 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 206 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 111 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 93, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 93, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.6ms, 48 PlacesBefore, 48 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 109 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 109, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 109, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 145.7ms, 51 PlacesBefore, 47 PlacesAfterwards, 31 TransitionsBefore, 28 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 63, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 63, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 39 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3413.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 476.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1245.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 54 SDslu, 58 SDs, 0 SdLazy, 139 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 147.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=2, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.5ms SsaConstructionTime, 175.8ms SatisfiabilityAnalysisTime, 355.6ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...