/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:50:18,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:50:18,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:50:18,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:50:18,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:50:18,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:50:18,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:50:18,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:50:18,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:50:18,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:50:18,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:50:18,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:50:18,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:50:18,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:50:18,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:50:18,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:50:18,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:50:18,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:50:18,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:50:18,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:50:18,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:50:18,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:50:18,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:50:18,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:50:18,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 22:50:18,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:50:18,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:50:18,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:50:18,464 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-25 22:50:18,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:50:18,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:50:18,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:50:18,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:50:18,500 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:50:18,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:50:18,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:50:18,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:50:18,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:50:18,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:50:18,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:50:18,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:50:18,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:50:18,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:50:18,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:50:18,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:50:18,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-25 22:50:18,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:50:18,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:50:18,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:50:18,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:50:18,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:50:18,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:50:18,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 22:50:18,808 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 22:50:18,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2021-03-25 22:50:18,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33f1a0e18/d7eb93549d5f4799924187e72faaabe1/FLAG893e6a4a8 [2021-03-25 22:50:19,415 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 22:50:19,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2021-03-25 22:50:19,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33f1a0e18/d7eb93549d5f4799924187e72faaabe1/FLAG893e6a4a8 [2021-03-25 22:50:19,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33f1a0e18/d7eb93549d5f4799924187e72faaabe1 [2021-03-25 22:50:19,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:50:19,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 22:50:19,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 22:50:19,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 22:50:19,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 22:50:19,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:50:19" (1/1) ... [2021-03-25 22:50:19,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd9121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:19, skipping insertion in model container [2021-03-25 22:50:19,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:50:19" (1/1) ... [2021-03-25 22:50:19,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 22:50:19,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 22:50:20,140 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 22:50:20,275 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-atomic/lamport.i[32156,32169] [2021-03-25 22:50:20,286 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-atomic/lamport.i[34083,34096] [2021-03-25 22:50:20,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:50:20,300 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 22:50:20,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 22:50:20,342 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-atomic/lamport.i[32156,32169] [2021-03-25 22:50:20,345 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-atomic/lamport.i[34083,34096] [2021-03-25 22:50:20,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:50:20,422 INFO L208 MainTranslator]: Completed translation [2021-03-25 22:50:20,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20 WrapperNode [2021-03-25 22:50:20,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 22:50:20,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:50:20,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:50:20,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:50:20,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:50:20,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:50:20,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:50:20,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:50:20,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (1/1) ... [2021-03-25 22:50:20,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:50:20,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:50:20,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:50:20,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:50:20,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (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 22:50:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 22:50:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-25 22:50:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-25 22:50:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 22:50:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 22:50:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 22:50:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 22:50:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 22:50:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 22:50:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 22:50:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 22:50:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:50:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:50:20,564 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 22:50:20,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:50:20,989 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-03-25 22:50:20,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:50:20 BoogieIcfgContainer [2021-03-25 22:50:20,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:50:20,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:50:20,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:50:20,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:50:20,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 10:50:19" (1/3) ... [2021-03-25 22:50:20,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726bcb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:50:20, skipping insertion in model container [2021-03-25 22:50:20,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:50:20" (2/3) ... [2021-03-25 22:50:20,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726bcb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:50:20, skipping insertion in model container [2021-03-25 22:50:20,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:50:20" (3/3) ... [2021-03-25 22:50:20,996 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-03-25 22:50:21,001 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:50:21,004 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 22:50:21,005 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:50:21,040 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,040 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,053 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,054 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:50:21,097 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 22:50:21,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 22:50:21,137 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:50:21,137 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:50:21,137 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:50:21,138 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:50:21,138 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:50:21,138 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:50:21,138 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:50:21,138 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:50:21,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 125 transitions, 272 flow [2021-03-25 22:50:21,202 INFO L129 PetriNetUnfolder]: 25/125 cut-off events. [2021-03-25 22:50:21,202 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:50:21,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 125 events. 25/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2021-03-25 22:50:21,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 125 transitions, 272 flow [2021-03-25 22:50:21,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 113 transitions, 238 flow [2021-03-25 22:50:21,213 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:21,223 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 113 transitions, 238 flow [2021-03-25 22:50:21,226 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 113 transitions, 238 flow [2021-03-25 22:50:21,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 113 transitions, 238 flow [2021-03-25 22:50:21,254 INFO L129 PetriNetUnfolder]: 24/115 cut-off events. [2021-03-25 22:50:21,254 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:50:21,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 24/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 276 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2021-03-25 22:50:21,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 4816 [2021-03-25 22:50:23,032 INFO L154 LiptonReduction]: Checked pairs total: 2500 [2021-03-25 22:50:23,032 INFO L156 LiptonReduction]: Total number of compositions: 49 [2021-03-25 22:50:23,036 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1823 [2021-03-25 22:50:23,050 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-25 22:50:23,050 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:50:23,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:23,051 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:23,051 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:23,056 INFO L82 PathProgramCache]: Analyzing trace with hash -328317108, now seen corresponding path program 1 times [2021-03-25 22:50:23,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:23,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207232789] [2021-03-25 22:50:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:23,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:23,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:23,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:23,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:23,176 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 22:50:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207232789] [2021-03-25 22:50:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:23,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:50:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724823741] [2021-03-25 22:50:23,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-25 22:50:23,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:23,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-25 22:50:23,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-25 22:50:23,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 174 [2021-03-25 22:50:23,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 77 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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 22:50:23,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:23,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 174 [2021-03-25 22:50:23,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:23,219 INFO L129 PetriNetUnfolder]: 12/69 cut-off events. [2021-03-25 22:50:23,219 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:50:23,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 12/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 7/62 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-25 22:50:23,221 INFO L132 encePairwiseOnDemand]: 167/174 looper letters, 0 selfloop transitions, 0 changer transitions 0/68 dead transitions. [2021-03-25 22:50:23,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 148 flow [2021-03-25 22:50:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 22:50:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 22:50:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2021-03-25 22:50:23,230 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2021-03-25 22:50:23,231 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2021-03-25 22:50:23,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2021-03-25 22:50:23,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:23,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2021-03-25 22:50:23,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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 22:50:23,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 22:50:23,241 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 22:50:23,242 INFO L185 Difference]: Start difference. First operand has 64 places, 77 transitions, 166 flow. Second operand 2 states and 313 transitions. [2021-03-25 22:50:23,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 148 flow [2021-03-25 22:50:23,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:50:23,246 INFO L241 Difference]: Finished difference. Result has 59 places, 68 transitions, 140 flow [2021-03-25 22:50:23,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=68} [2021-03-25 22:50:23,248 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2021-03-25 22:50:23,249 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:23,249 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 68 transitions, 140 flow [2021-03-25 22:50:23,249 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 68 transitions, 140 flow [2021-03-25 22:50:23,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 68 transitions, 140 flow [2021-03-25 22:50:23,255 INFO L129 PetriNetUnfolder]: 12/69 cut-off events. [2021-03-25 22:50:23,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:50:23,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 69 events. 12/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-03-25 22:50:23,257 INFO L142 LiptonReduction]: Number of co-enabled transitions 2146 [2021-03-25 22:50:23,810 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-03-25 22:50:24,070 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-03-25 22:50:24,173 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-25 22:50:24,209 INFO L154 LiptonReduction]: Checked pairs total: 1320 [2021-03-25 22:50:24,209 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 22:50:24,209 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 960 [2021-03-25 22:50:24,212 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 136 flow [2021-03-25 22:50:24,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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 22:50:24,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:24,213 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:24,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:50:24,213 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash 64287001, now seen corresponding path program 1 times [2021-03-25 22:50:24,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:24,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916485190] [2021-03-25 22:50:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:24,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:24,310 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 22:50:24,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916485190] [2021-03-25 22:50:24,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:24,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:50:24,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631942078] [2021-03-25 22:50:24,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:50:24,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:50:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:50:24,315 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2021-03-25 22:50:24,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 22:50:24,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:24,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2021-03-25 22:50:24,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:24,355 INFO L129 PetriNetUnfolder]: 24/113 cut-off events. [2021-03-25 22:50:24,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:50:24,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 113 events. 24/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 345 event pairs, 2 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 128. Up to 21 conditions per place. [2021-03-25 22:50:24,358 INFO L132 encePairwiseOnDemand]: 177/184 looper letters, 8 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2021-03-25 22:50:24,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 170 flow [2021-03-25 22:50:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:50:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:50:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2021-03-25 22:50:24,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8152173913043478 [2021-03-25 22:50:24,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2021-03-25 22:50:24,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2021-03-25 22:50:24,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:24,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2021-03-25 22:50:24,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 22:50:24,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 22:50:24,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 22:50:24,371 INFO L185 Difference]: Start difference. First operand has 56 places, 66 transitions, 136 flow. Second operand 3 states and 450 transitions. [2021-03-25 22:50:24,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 170 flow [2021-03-25 22:50:24,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 22:50:24,375 INFO L241 Difference]: Finished difference. Result has 60 places, 68 transitions, 168 flow [2021-03-25 22:50:24,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2021-03-25 22:50:24,375 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2021-03-25 22:50:24,375 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:24,375 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 68 transitions, 168 flow [2021-03-25 22:50:24,376 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 68 transitions, 168 flow [2021-03-25 22:50:24,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 68 transitions, 168 flow [2021-03-25 22:50:24,382 INFO L129 PetriNetUnfolder]: 16/91 cut-off events. [2021-03-25 22:50:24,382 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 22:50:24,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 91 events. 16/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 227 event pairs, 1 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2021-03-25 22:50:24,384 INFO L142 LiptonReduction]: Number of co-enabled transitions 2082 [2021-03-25 22:50:24,453 INFO L154 LiptonReduction]: Checked pairs total: 1559 [2021-03-25 22:50:24,453 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 22:50:24,453 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-25 22:50:24,454 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 64 transitions, 160 flow [2021-03-25 22:50:24,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 22:50:24,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:24,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:24,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:50:24,455 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1212895790, now seen corresponding path program 1 times [2021-03-25 22:50:24,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137226490] [2021-03-25 22:50:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:24,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:50:24,491 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 22:50:24,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137226490] [2021-03-25 22:50:24,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:24,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:50:24,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791619244] [2021-03-25 22:50:24,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:50:24,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:50:24,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:50:24,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 188 [2021-03-25 22:50:24,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 64 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 22:50:24,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:24,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 188 [2021-03-25 22:50:24,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:24,515 INFO L129 PetriNetUnfolder]: 18/95 cut-off events. [2021-03-25 22:50:24,515 INFO L130 PetriNetUnfolder]: For 25/33 co-relation queries the response was YES. [2021-03-25 22:50:24,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 95 events. 18/95 cut-off events. For 25/33 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 274 event pairs, 2 based on Foata normal form. 8/91 useless extension candidates. Maximal degree in co-relation 130. Up to 14 conditions per place. [2021-03-25 22:50:24,516 INFO L132 encePairwiseOnDemand]: 182/188 looper letters, 7 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2021-03-25 22:50:24,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 182 flow [2021-03-25 22:50:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:50:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:50:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2021-03-25 22:50:24,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8156028368794326 [2021-03-25 22:50:24,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2021-03-25 22:50:24,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2021-03-25 22:50:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:24,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2021-03-25 22:50:24,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 22:50:24,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 22:50:24,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 22:50:24,522 INFO L185 Difference]: Start difference. First operand has 56 places, 64 transitions, 160 flow. Second operand 3 states and 460 transitions. [2021-03-25 22:50:24,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 182 flow [2021-03-25 22:50:24,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:50:24,525 INFO L241 Difference]: Finished difference. Result has 57 places, 64 transitions, 166 flow [2021-03-25 22:50:24,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2021-03-25 22:50:24,525 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2021-03-25 22:50:24,525 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:24,525 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 64 transitions, 166 flow [2021-03-25 22:50:24,526 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 64 transitions, 166 flow [2021-03-25 22:50:24,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 64 transitions, 166 flow [2021-03-25 22:50:24,533 INFO L129 PetriNetUnfolder]: 18/99 cut-off events. [2021-03-25 22:50:24,533 INFO L130 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2021-03-25 22:50:24,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 99 events. 18/99 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 301 event pairs, 2 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 118. Up to 13 conditions per place. [2021-03-25 22:50:24,534 INFO L142 LiptonReduction]: Number of co-enabled transitions 1774 [2021-03-25 22:50:24,541 INFO L154 LiptonReduction]: Checked pairs total: 394 [2021-03-25 22:50:24,542 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:50:24,542 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 22:50:24,543 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 166 flow [2021-03-25 22:50:24,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 22:50:24,543 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:24,543 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:24,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:50:24,544 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1142588846, now seen corresponding path program 1 times [2021-03-25 22:50:24,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:24,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141917320] [2021-03-25 22:50:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:24,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:24,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:24,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,620 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 22:50:24,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141917320] [2021-03-25 22:50:24,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:24,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:24,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063811749] [2021-03-25 22:50:24,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:24,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:24,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:24,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:24,622 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 188 [2021-03-25 22:50:24,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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 22:50:24,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:24,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 188 [2021-03-25 22:50:24,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:24,779 INFO L129 PetriNetUnfolder]: 347/812 cut-off events. [2021-03-25 22:50:24,779 INFO L130 PetriNetUnfolder]: For 122/124 co-relation queries the response was YES. [2021-03-25 22:50:24,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 812 events. 347/812 cut-off events. For 122/124 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4619 event pairs, 37 based on Foata normal form. 7/760 useless extension candidates. Maximal degree in co-relation 1394. Up to 228 conditions per place. [2021-03-25 22:50:24,784 INFO L132 encePairwiseOnDemand]: 174/188 looper letters, 45 selfloop transitions, 5 changer transitions 18/107 dead transitions. [2021-03-25 22:50:24,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 395 flow [2021-03-25 22:50:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2021-03-25 22:50:24,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7436170212765958 [2021-03-25 22:50:24,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2021-03-25 22:50:24,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2021-03-25 22:50:24,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:24,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2021-03-25 22:50:24,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 22:50:24,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 22:50:24,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 22:50:24,791 INFO L185 Difference]: Start difference. First operand has 57 places, 64 transitions, 166 flow. Second operand 5 states and 699 transitions. [2021-03-25 22:50:24,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 395 flow [2021-03-25 22:50:24,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 22:50:24,795 INFO L241 Difference]: Finished difference. Result has 64 places, 69 transitions, 240 flow [2021-03-25 22:50:24,795 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2021-03-25 22:50:24,795 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2021-03-25 22:50:24,796 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:24,796 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 69 transitions, 240 flow [2021-03-25 22:50:24,796 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 69 transitions, 240 flow [2021-03-25 22:50:24,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 69 transitions, 240 flow [2021-03-25 22:50:24,817 INFO L129 PetriNetUnfolder]: 101/356 cut-off events. [2021-03-25 22:50:24,818 INFO L130 PetriNetUnfolder]: For 100/104 co-relation queries the response was YES. [2021-03-25 22:50:24,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 356 events. 101/356 cut-off events. For 100/104 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1778 event pairs, 10 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 582. Up to 59 conditions per place. [2021-03-25 22:50:24,822 INFO L142 LiptonReduction]: Number of co-enabled transitions 1956 [2021-03-25 22:50:24,834 INFO L154 LiptonReduction]: Checked pairs total: 130 [2021-03-25 22:50:24,835 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:50:24,835 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 22:50:24,836 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 240 flow [2021-03-25 22:50:24,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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 22:50:24,837 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:24,837 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:24,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:50:24,837 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1116846970, now seen corresponding path program 2 times [2021-03-25 22:50:24,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:24,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599366040] [2021-03-25 22:50:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:24,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:24,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:24,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:24,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:24,875 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 22:50:24,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599366040] [2021-03-25 22:50:24,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:24,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:24,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091491471] [2021-03-25 22:50:24,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:24,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:24,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:24,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:24,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 188 [2021-03-25 22:50:24,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 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 22:50:24,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:24,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 188 [2021-03-25 22:50:24,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:25,000 INFO L129 PetriNetUnfolder]: 326/1128 cut-off events. [2021-03-25 22:50:25,000 INFO L130 PetriNetUnfolder]: For 308/338 co-relation queries the response was YES. [2021-03-25 22:50:25,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1128 events. 326/1128 cut-off events. For 308/338 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7635 event pairs, 27 based on Foata normal form. 15/1022 useless extension candidates. Maximal degree in co-relation 1935. Up to 190 conditions per place. [2021-03-25 22:50:25,009 INFO L132 encePairwiseOnDemand]: 184/188 looper letters, 18 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2021-03-25 22:50:25,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 325 flow [2021-03-25 22:50:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2021-03-25 22:50:25,011 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8404255319148937 [2021-03-25 22:50:25,011 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2021-03-25 22:50:25,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2021-03-25 22:50:25,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:25,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2021-03-25 22:50:25,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 22:50:25,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 22:50:25,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 22:50:25,016 INFO L185 Difference]: Start difference. First operand has 63 places, 69 transitions, 240 flow. Second operand 5 states and 790 transitions. [2021-03-25 22:50:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 325 flow [2021-03-25 22:50:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 309 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-03-25 22:50:25,022 INFO L241 Difference]: Finished difference. Result has 70 places, 75 transitions, 274 flow [2021-03-25 22:50:25,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2021-03-25 22:50:25,022 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2021-03-25 22:50:25,022 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:25,022 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 75 transitions, 274 flow [2021-03-25 22:50:25,023 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 75 transitions, 274 flow [2021-03-25 22:50:25,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 75 transitions, 274 flow [2021-03-25 22:50:25,104 INFO L129 PetriNetUnfolder]: 260/952 cut-off events. [2021-03-25 22:50:25,104 INFO L130 PetriNetUnfolder]: For 296/313 co-relation queries the response was YES. [2021-03-25 22:50:25,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 952 events. 260/952 cut-off events. For 296/313 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6399 event pairs, 24 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 1646. Up to 172 conditions per place. [2021-03-25 22:50:25,115 INFO L142 LiptonReduction]: Number of co-enabled transitions 2252 [2021-03-25 22:50:25,247 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-25 22:50:25,247 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:50:25,247 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 225 [2021-03-25 22:50:25,250 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 272 flow [2021-03-25 22:50:25,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 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 22:50:25,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:25,250 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:25,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 22:50:25,251 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:25,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1619709648, now seen corresponding path program 3 times [2021-03-25 22:50:25,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:25,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288228173] [2021-03-25 22:50:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:25,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:25,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:25,312 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 22:50:25,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288228173] [2021-03-25 22:50:25,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:25,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:25,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160066667] [2021-03-25 22:50:25,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:25,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:25,315 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 189 [2021-03-25 22:50:25,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 22:50:25,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:25,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 189 [2021-03-25 22:50:25,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:25,589 INFO L129 PetriNetUnfolder]: 963/2559 cut-off events. [2021-03-25 22:50:25,589 INFO L130 PetriNetUnfolder]: For 1240/1278 co-relation queries the response was YES. [2021-03-25 22:50:25,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 2559 events. 963/2559 cut-off events. For 1240/1278 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18932 event pairs, 113 based on Foata normal form. 36/2435 useless extension candidates. Maximal degree in co-relation 3764. Up to 704 conditions per place. [2021-03-25 22:50:25,606 INFO L132 encePairwiseOnDemand]: 175/189 looper letters, 48 selfloop transitions, 10 changer transitions 14/117 dead transitions. [2021-03-25 22:50:25,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 117 transitions, 547 flow [2021-03-25 22:50:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2021-03-25 22:50:25,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2021-03-25 22:50:25,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2021-03-25 22:50:25,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2021-03-25 22:50:25,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:25,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2021-03-25 22:50:25,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 22:50:25,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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 22:50:25,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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 22:50:25,613 INFO L185 Difference]: Start difference. First operand has 69 places, 74 transitions, 272 flow. Second operand 5 states and 705 transitions. [2021-03-25 22:50:25,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 117 transitions, 547 flow [2021-03-25 22:50:25,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 22:50:25,621 INFO L241 Difference]: Finished difference. Result has 77 places, 81 transitions, 372 flow [2021-03-25 22:50:25,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2021-03-25 22:50:25,621 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2021-03-25 22:50:25,621 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:25,621 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 81 transitions, 372 flow [2021-03-25 22:50:25,622 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 81 transitions, 372 flow [2021-03-25 22:50:25,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 81 transitions, 372 flow [2021-03-25 22:50:25,720 INFO L129 PetriNetUnfolder]: 371/1401 cut-off events. [2021-03-25 22:50:25,720 INFO L130 PetriNetUnfolder]: For 935/977 co-relation queries the response was YES. [2021-03-25 22:50:25,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1401 events. 371/1401 cut-off events. For 935/977 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10295 event pairs, 35 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 2958. Up to 285 conditions per place. [2021-03-25 22:50:25,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 2428 [2021-03-25 22:50:25,875 INFO L154 LiptonReduction]: Checked pairs total: 79 [2021-03-25 22:50:25,876 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:50:25,876 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 255 [2021-03-25 22:50:25,881 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 372 flow [2021-03-25 22:50:25,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 22:50:25,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:25,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:25,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 22:50:25,882 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:25,883 INFO L82 PathProgramCache]: Analyzing trace with hash -930026420, now seen corresponding path program 1 times [2021-03-25 22:50:25,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:25,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936617617] [2021-03-25 22:50:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:25,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:25,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:25,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:25,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:25,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:25,931 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 22:50:25,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936617617] [2021-03-25 22:50:25,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:25,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:25,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207315729] [2021-03-25 22:50:25,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:25,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:25,934 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2021-03-25 22:50:25,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 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 22:50:25,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:25,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2021-03-25 22:50:25,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:26,182 INFO L129 PetriNetUnfolder]: 625/2284 cut-off events. [2021-03-25 22:50:26,182 INFO L130 PetriNetUnfolder]: For 1955/2034 co-relation queries the response was YES. [2021-03-25 22:50:26,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 2284 events. 625/2284 cut-off events. For 1955/2034 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18087 event pairs, 44 based on Foata normal form. 54/2304 useless extension candidates. Maximal degree in co-relation 5283. Up to 409 conditions per place. [2021-03-25 22:50:26,198 INFO L132 encePairwiseOnDemand]: 185/189 looper letters, 24 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2021-03-25 22:50:26,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 540 flow [2021-03-25 22:50:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2021-03-25 22:50:26,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8402116402116402 [2021-03-25 22:50:26,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2021-03-25 22:50:26,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2021-03-25 22:50:26,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:26,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2021-03-25 22:50:26,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 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 22:50:26,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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 22:50:26,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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 22:50:26,205 INFO L185 Difference]: Start difference. First operand has 76 places, 81 transitions, 372 flow. Second operand 5 states and 794 transitions. [2021-03-25 22:50:26,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 540 flow [2021-03-25 22:50:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 524 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-03-25 22:50:26,213 INFO L241 Difference]: Finished difference. Result has 83 places, 89 transitions, 452 flow [2021-03-25 22:50:26,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2021-03-25 22:50:26,214 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2021-03-25 22:50:26,214 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:26,214 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 89 transitions, 452 flow [2021-03-25 22:50:26,214 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 89 transitions, 452 flow [2021-03-25 22:50:26,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 89 transitions, 452 flow [2021-03-25 22:50:26,357 INFO L129 PetriNetUnfolder]: 535/2098 cut-off events. [2021-03-25 22:50:26,357 INFO L130 PetriNetUnfolder]: For 1587/1642 co-relation queries the response was YES. [2021-03-25 22:50:26,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 2098 events. 535/2098 cut-off events. For 1587/1642 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16718 event pairs, 48 based on Foata normal form. 19/2092 useless extension candidates. Maximal degree in co-relation 4456. Up to 398 conditions per place. [2021-03-25 22:50:26,390 INFO L142 LiptonReduction]: Number of co-enabled transitions 2674 [2021-03-25 22:50:26,777 INFO L154 LiptonReduction]: Checked pairs total: 103 [2021-03-25 22:50:26,777 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:50:26,777 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 563 [2021-03-25 22:50:26,778 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 450 flow [2021-03-25 22:50:26,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 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 22:50:26,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:26,779 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:26,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 22:50:26,779 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:26,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1408560617, now seen corresponding path program 1 times [2021-03-25 22:50:26,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:26,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960412416] [2021-03-25 22:50:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:26,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:26,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:26,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:26,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:26,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:26,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:50:26,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:26,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:26,810 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 22:50:26,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960412416] [2021-03-25 22:50:26,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:26,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:26,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025961743] [2021-03-25 22:50:26,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:26,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:26,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 190 [2021-03-25 22:50:26,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 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 22:50:26,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:26,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 190 [2021-03-25 22:50:26,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:27,024 INFO L129 PetriNetUnfolder]: 571/2148 cut-off events. [2021-03-25 22:50:27,024 INFO L130 PetriNetUnfolder]: For 1467/1531 co-relation queries the response was YES. [2021-03-25 22:50:27,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 2148 events. 571/2148 cut-off events. For 1467/1531 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 17467 event pairs, 48 based on Foata normal form. 78/2200 useless extension candidates. Maximal degree in co-relation 4721. Up to 436 conditions per place. [2021-03-25 22:50:27,040 INFO L132 encePairwiseOnDemand]: 181/190 looper letters, 10 selfloop transitions, 13 changer transitions 2/101 dead transitions. [2021-03-25 22:50:27,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 536 flow [2021-03-25 22:50:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2021-03-25 22:50:27,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8052631578947368 [2021-03-25 22:50:27,043 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2021-03-25 22:50:27,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2021-03-25 22:50:27,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:27,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2021-03-25 22:50:27,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 22:50:27,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 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 22:50:27,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 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 22:50:27,047 INFO L185 Difference]: Start difference. First operand has 82 places, 88 transitions, 450 flow. Second operand 5 states and 765 transitions. [2021-03-25 22:50:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 536 flow [2021-03-25 22:50:27,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 22:50:27,055 INFO L241 Difference]: Finished difference. Result has 89 places, 96 transitions, 533 flow [2021-03-25 22:50:27,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=89, PETRI_TRANSITIONS=96} [2021-03-25 22:50:27,056 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2021-03-25 22:50:27,056 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:27,056 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 96 transitions, 533 flow [2021-03-25 22:50:27,057 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 96 transitions, 533 flow [2021-03-25 22:50:27,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 96 transitions, 533 flow [2021-03-25 22:50:27,222 INFO L129 PetriNetUnfolder]: 535/2099 cut-off events. [2021-03-25 22:50:27,222 INFO L130 PetriNetUnfolder]: For 1707/1770 co-relation queries the response was YES. [2021-03-25 22:50:27,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5012 conditions, 2099 events. 535/2099 cut-off events. For 1707/1770 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17166 event pairs, 44 based on Foata normal form. 25/2099 useless extension candidates. Maximal degree in co-relation 4845. Up to 431 conditions per place. [2021-03-25 22:50:27,255 INFO L142 LiptonReduction]: Number of co-enabled transitions 2538 [2021-03-25 22:50:27,361 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 22:50:27,361 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:50:27,361 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 305 [2021-03-25 22:50:27,362 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 96 transitions, 533 flow [2021-03-25 22:50:27,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 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 22:50:27,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:50:27,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:50:27,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 22:50:27,363 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:50:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:50:27,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1818368222, now seen corresponding path program 1 times [2021-03-25 22:50:27,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:50:27,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727850676] [2021-03-25 22:50:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:50:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:50:27,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:27,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:27,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:27,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:50:27,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:27,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:50:27,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:50:27,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:50:27,415 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 22:50:27,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727850676] [2021-03-25 22:50:27,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:50:27,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:50:27,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420760516] [2021-03-25 22:50:27,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:50:27,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:50:27,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:50:27,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:50:27,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 190 [2021-03-25 22:50:27,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 96 transitions, 533 flow. Second operand has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 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 22:50:27,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:50:27,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 190 [2021-03-25 22:50:27,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:50:27,612 INFO L129 PetriNetUnfolder]: 487/1823 cut-off events. [2021-03-25 22:50:27,612 INFO L130 PetriNetUnfolder]: For 1410/1461 co-relation queries the response was YES. [2021-03-25 22:50:27,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 1823 events. 487/1823 cut-off events. For 1410/1461 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 14057 event pairs, 33 based on Foata normal form. 68/1863 useless extension candidates. Maximal degree in co-relation 3966. Up to 303 conditions per place. [2021-03-25 22:50:27,623 INFO L132 encePairwiseOnDemand]: 181/190 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2021-03-25 22:50:27,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 104 transitions, 584 flow [2021-03-25 22:50:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:50:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:50:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2021-03-25 22:50:27,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8115789473684211 [2021-03-25 22:50:27,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2021-03-25 22:50:27,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2021-03-25 22:50:27,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:50:27,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2021-03-25 22:50:27,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 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 22:50:27,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 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 22:50:27,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 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 22:50:27,630 INFO L185 Difference]: Start difference. First operand has 89 places, 96 transitions, 533 flow. Second operand 5 states and 771 transitions. [2021-03-25 22:50:27,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 104 transitions, 584 flow [2021-03-25 22:50:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 564 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-25 22:50:27,639 INFO L241 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2021-03-25 22:50:27,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2021-03-25 22:50:27,639 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2021-03-25 22:50:27,639 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:50:27,639 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 0 transitions, 0 flow [2021-03-25 22:50:27,640 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 0 transitions, 0 flow [2021-03-25 22:50:27,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 22:50:27,640 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 22:50:27,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:50:27,640 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 22:50:27,640 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 22:50:27,640 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:50:27,640 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:50:27,641 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 22:50:27,641 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 22:50:27,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 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 22:50:27,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 22:50:27,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:50:27 BasicIcfg [2021-03-25 22:50:27,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:50:27,646 INFO L168 Benchmark]: Toolchain (without parser) took 7779.56 ms. Allocated memory was 255.9 MB in the beginning and 534.8 MB in the end (delta: 278.9 MB). Free memory was 234.9 MB in the beginning and 394.9 MB in the end (delta: -160.1 MB). Peak memory consumption was 117.4 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,646 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:50:27,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.57 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 234.9 MB in the beginning and 331.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 369.1 MB. Free memory was 331.7 MB in the beginning and 329.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,647 INFO L168 Benchmark]: Boogie Preprocessor took 35.56 ms. Allocated memory is still 369.1 MB. Free memory was 329.6 MB in the beginning and 328.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,648 INFO L168 Benchmark]: RCFGBuilder took 484.02 ms. Allocated memory is still 369.1 MB. Free memory was 328.2 MB in the beginning and 301.6 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,648 INFO L168 Benchmark]: TraceAbstraction took 6653.12 ms. Allocated memory was 369.1 MB in the beginning and 534.8 MB in the end (delta: 165.7 MB). Free memory was 300.9 MB in the beginning and 394.9 MB in the end (delta: -94.0 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.0 GB. [2021-03-25 22:50:27,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 555.57 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 234.9 MB in the beginning and 331.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 369.1 MB. Free memory was 331.7 MB in the beginning and 329.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.56 ms. Allocated memory is still 369.1 MB. Free memory was 329.6 MB in the beginning and 328.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 484.02 ms. Allocated memory is still 369.1 MB. Free memory was 328.2 MB in the beginning and 301.6 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6653.12 ms. Allocated memory was 369.1 MB in the beginning and 534.8 MB in the end (delta: 165.7 MB). Free memory was 300.9 MB in the beginning and 394.9 MB in the end (delta: -94.0 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1806.8ms, 95 PlacesBefore, 64 PlacesAfterwards, 113 TransitionsBefore, 77 TransitionsAfterwards, 4816 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 49 TotalNumberOfCompositions, 2500 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1725, positive: 1701, positive conditional: 1701, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1551, positive: 1536, positive conditional: 0, positive unconditional: 1536, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1551, positive: 1536, positive conditional: 0, positive unconditional: 1536, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1551, positive: 1509, positive conditional: 0, positive unconditional: 1509, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1725, positive: 165, positive conditional: 165, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 1551, unknown conditional: 1551, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 24, Positive conditional cache size: 24, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 960.0ms, 59 PlacesBefore, 56 PlacesAfterwards, 68 TransitionsBefore, 66 TransitionsAfterwards, 2146 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 1320 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 441, positive: 409, positive conditional: 409, positive unconditional: 0, negative: 32, negative conditional: 32, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 323, positive: 314, positive conditional: 0, positive unconditional: 314, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 323, positive: 314, positive conditional: 0, positive unconditional: 314, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 323, positive: 314, positive conditional: 0, positive unconditional: 314, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 441, positive: 95, positive conditional: 95, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 323, unknown conditional: 323, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 72, Positive conditional cache size: 72, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 77.6ms, 60 PlacesBefore, 56 PlacesAfterwards, 68 TransitionsBefore, 64 TransitionsAfterwards, 2082 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 1559 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 365, positive: 320, positive conditional: 320, positive unconditional: 0, negative: 45, negative conditional: 45, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 145, positive: 144, positive conditional: 4, positive unconditional: 140, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 145, positive: 144, positive conditional: 4, positive unconditional: 140, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 145, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 365, positive: 176, positive conditional: 176, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 145, unknown conditional: 145, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 80, Positive conditional cache size: 80, Positive unconditional cache size: 0, Negative cache size: 16, Negative conditional cache size: 16, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.1ms, 57 PlacesBefore, 57 PlacesAfterwards, 64 TransitionsBefore, 64 TransitionsAfterwards, 1774 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 394 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 55, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 85, Positive conditional cache size: 85, Positive unconditional cache size: 0, Negative cache size: 16, Negative conditional cache size: 16, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.7ms, 64 PlacesBefore, 63 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 1956 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 130 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 1, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 95, Positive conditional cache size: 95, Positive unconditional cache size: 0, Negative cache size: 17, Negative conditional cache size: 17, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 224.3ms, 70 PlacesBefore, 69 PlacesAfterwards, 75 TransitionsBefore, 74 TransitionsAfterwards, 2252 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 2, positive unconditional: 31, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 2, positive unconditional: 31, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 44, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 33, unknown conditional: 33, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 95, Positive conditional cache size: 95, Positive unconditional cache size: 0, Negative cache size: 17, Negative conditional cache size: 17, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 254.2ms, 77 PlacesBefore, 76 PlacesAfterwards, 81 TransitionsBefore, 81 TransitionsAfterwards, 2428 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 79 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 96, Positive conditional cache size: 96, Positive unconditional cache size: 0, Negative cache size: 18, Negative conditional cache size: 18, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 562.9ms, 83 PlacesBefore, 82 PlacesAfterwards, 89 TransitionsBefore, 88 TransitionsAfterwards, 2674 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 103 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 31, positive: 31, positive conditional: 1, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 31, positive: 31, positive conditional: 1, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 31, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 39, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 31, unknown conditional: 31, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 96, Positive conditional cache size: 96, Positive unconditional cache size: 0, Negative cache size: 18, Negative conditional cache size: 18, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 304.7ms, 89 PlacesBefore, 89 PlacesAfterwards, 96 TransitionsBefore, 96 TransitionsAfterwards, 2538 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 4, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 97, Positive conditional cache size: 97, Positive unconditional cache size: 0, Negative cache size: 18, Negative conditional cache size: 18, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 91 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 115, Positive cache size: 97, Positive conditional cache size: 97, Positive unconditional cache size: 0, Negative cache size: 18, Negative conditional cache size: 18, Negative unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: 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 3 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6508.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1524.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1905.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 107 SDslu, 71 SDs, 0 SdLazy, 254 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 192.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=533occurred in iteration=8, InterpolantAutomatonStates: 38, 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: 17.2ms SsaConstructionTime, 97.8ms SatisfiabilityAnalysisTime, 321.1ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...