/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:46:29,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:46:29,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:46:29,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 04:46:29,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:46:29,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:46:29,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:46:29,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:46:29,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:46:29,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:46:29,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:46:29,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:46:29,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:46:29,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:46:29,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:46:29,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:46:29,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 04:46:29,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:46:29,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:46:29,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:46:29,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 04:46:29,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:46:29,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:46:29,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:46:29,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:46:29,538 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:46:29,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:46:29,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:46:29,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:46:29,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:46:29,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:46:29,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:46:29,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:46:29,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:46:29,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:46:29,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:46:29,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:46:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:46:29,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:46:29,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:46:29,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:46:29,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:46:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:46:29,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:46:29,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:46:29,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:46:29,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:46:29,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:46:29,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:46:29,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:46:29,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:46:29,867 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:46:29,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_tso.opt.i [2021-03-25 04:46:29,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90583e726/8ee7fa7445124760b1352e18272731bb/FLAG7cdc5ba40 [2021-03-25 04:46:30,626 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:46:30,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_tso.opt.i [2021-03-25 04:46:30,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90583e726/8ee7fa7445124760b1352e18272731bb/FLAG7cdc5ba40 [2021-03-25 04:46:30,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90583e726/8ee7fa7445124760b1352e18272731bb [2021-03-25 04:46:30,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:46:30,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:46:30,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:46:30,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:46:30,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:46:30,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:46:30" (1/1) ... [2021-03-25 04:46:30,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9461f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:30, skipping insertion in model container [2021-03-25 04:46:30,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:46:30" (1/1) ... [2021-03-25 04:46:30,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:46:30,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:46:31,151 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_tso.opt.i[948,961] [2021-03-25 04:46:31,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:46:31,381 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:46:31,391 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_tso.opt.i[948,961] [2021-03-25 04:46:31,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:46:31,527 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:46:31,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31 WrapperNode [2021-03-25 04:46:31,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:46:31,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:46:31,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:46:31,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:46:31,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:46:31,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:46:31,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:46:31,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:46:31,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (1/1) ... [2021-03-25 04:46:31,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:46:31,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:46:31,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:46:31,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:46:31,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (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 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:46:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:46:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:46:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:46:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:46:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:46:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:46:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:46:31,720 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 04:46:33,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:46:33,311 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-25 04:46:33,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:46:33 BoogieIcfgContainer [2021-03-25 04:46:33,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:46:33,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:46:33,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:46:33,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:46:33,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:46:30" (1/3) ... [2021-03-25 04:46:33,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799f94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:46:33, skipping insertion in model container [2021-03-25 04:46:33,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:46:31" (2/3) ... [2021-03-25 04:46:33,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799f94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:46:33, skipping insertion in model container [2021-03-25 04:46:33,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:46:33" (3/3) ... [2021-03-25 04:46:33,321 INFO L111 eAbstractionObserver]: Analyzing ICFG mix045_tso.opt.i [2021-03-25 04:46:33,326 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:46:33,330 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 04:46:33,331 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:46:33,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,379 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:46:33,386 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:46:33,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 04:46:33,430 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:46:33,430 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:46:33,430 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:46:33,434 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:46:33,435 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:46:33,435 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:46:33,435 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:46:33,435 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:46:33,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 100 transitions, 215 flow [2021-03-25 04:46:33,494 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2021-03-25 04:46:33,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:33,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-03-25 04:46:33,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 100 transitions, 215 flow [2021-03-25 04:46:33,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 97 transitions, 203 flow [2021-03-25 04:46:33,508 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:33,515 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 97 transitions, 203 flow [2021-03-25 04:46:33,517 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 97 transitions, 203 flow [2021-03-25 04:46:33,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 97 transitions, 203 flow [2021-03-25 04:46:33,539 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2021-03-25 04:46:33,539 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:33,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-03-25 04:46:33,548 INFO L142 LiptonReduction]: Number of co-enabled transitions 1738 [2021-03-25 04:46:34,303 WARN L205 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 188 [2021-03-25 04:46:34,699 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-25 04:46:36,185 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 312 DAG size of output: 268 [2021-03-25 04:46:36,753 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-25 04:46:37,656 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-25 04:46:38,014 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-25 04:46:38,122 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-25 04:46:38,942 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-03-25 04:46:39,261 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-03-25 04:46:40,404 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 267 DAG size of output: 266 [2021-03-25 04:46:40,972 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-25 04:46:41,139 INFO L154 LiptonReduction]: Checked pairs total: 2726 [2021-03-25 04:46:41,139 INFO L156 LiptonReduction]: Total number of compositions: 67 [2021-03-25 04:46:41,141 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7634 [2021-03-25 04:46:41,149 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 04:46:41,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:41,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:41,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:41,150 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:41,155 INFO L82 PathProgramCache]: Analyzing trace with hash 429548733, now seen corresponding path program 1 times [2021-03-25 04:46:41,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:41,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619352525] [2021-03-25 04:46:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:41,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:41,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:41,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:41,426 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 04:46:41,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619352525] [2021-03-25 04:46:41,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:41,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:46:41,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005529680] [2021-03-25 04:46:41,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:46:41,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:41,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:46:41,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:46:41,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 167 [2021-03-25 04:46:41,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 04:46:41,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:41,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 167 [2021-03-25 04:46:41,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:41,530 INFO L129 PetriNetUnfolder]: 23/102 cut-off events. [2021-03-25 04:46:41,531 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:41,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 102 events. 23/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 372 event pairs, 3 based on Foata normal form. 5/99 useless extension candidates. Maximal degree in co-relation 139. Up to 37 conditions per place. [2021-03-25 04:46:41,534 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 7 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2021-03-25 04:46:41,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 113 flow [2021-03-25 04:46:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:46:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:46:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2021-03-25 04:46:41,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8902195608782435 [2021-03-25 04:46:41,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2021-03-25 04:46:41,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2021-03-25 04:46:41,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:41,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2021-03-25 04:46:41,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 04:46:41,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 04:46:41,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 04:46:41,569 INFO L185 Difference]: Start difference. First operand has 49 places, 40 transitions, 89 flow. Second operand 3 states and 446 transitions. [2021-03-25 04:46:41,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 113 flow [2021-03-25 04:46:41,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:46:41,573 INFO L241 Difference]: Finished difference. Result has 46 places, 34 transitions, 78 flow [2021-03-25 04:46:41,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2021-03-25 04:46:41,575 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-03-25 04:46:41,576 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:41,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 34 transitions, 78 flow [2021-03-25 04:46:41,577 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 34 transitions, 78 flow [2021-03-25 04:46:41,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 78 flow [2021-03-25 04:46:41,582 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-25 04:46:41,582 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:41,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 04:46:41,584 INFO L142 LiptonReduction]: Number of co-enabled transitions 254 [2021-03-25 04:46:42,014 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-03-25 04:46:42,330 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-03-25 04:46:42,920 WARN L205 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-03-25 04:46:43,518 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-03-25 04:46:44,165 INFO L154 LiptonReduction]: Checked pairs total: 1170 [2021-03-25 04:46:44,165 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 04:46:44,165 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2589 [2021-03-25 04:46:44,166 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 58 flow [2021-03-25 04:46:44,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 04:46:44,166 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:44,167 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 04:46:44,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:46:44,167 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1980972199, now seen corresponding path program 1 times [2021-03-25 04:46:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:44,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962802893] [2021-03-25 04:46:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:44,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:44,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:44,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:44,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:44,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 04:46:44,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:46:44,292 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 04:46:44,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962802893] [2021-03-25 04:46:44,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:46:44,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518070263] [2021-03-25 04:46:44,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:46:44,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:46:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:46:44,295 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 177 [2021-03-25 04:46:44,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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 04:46:44,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:44,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 177 [2021-03-25 04:46:44,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:44,309 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 04:46:44,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:44,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:46:44,310 INFO L132 encePairwiseOnDemand]: 174/177 looper letters, 1 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2021-03-25 04:46:44,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 64 flow [2021-03-25 04:46:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:46:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:46:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2021-03-25 04:46:44,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.871939736346516 [2021-03-25 04:46:44,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2021-03-25 04:46:44,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2021-03-25 04:46:44,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:44,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2021-03-25 04:46:44,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 04:46:44,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 04:46:44,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 04:46:44,315 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 58 flow. Second operand 3 states and 463 transitions. [2021-03-25 04:46:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 64 flow [2021-03-25 04:46:44,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 60 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:46:44,316 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 60 flow [2021-03-25 04:46:44,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-25 04:46:44,316 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -15 predicate places. [2021-03-25 04:46:44,317 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:44,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 60 flow [2021-03-25 04:46:44,317 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 60 flow [2021-03-25 04:46:44,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 60 flow [2021-03-25 04:46:44,320 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 04:46:44,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:46:44,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:46:44,321 INFO L142 LiptonReduction]: Number of co-enabled transitions 202 [2021-03-25 04:46:45,005 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-03-25 04:46:45,168 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-03-25 04:46:45,465 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-03-25 04:46:45,639 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-03-25 04:46:45,642 INFO L154 LiptonReduction]: Checked pairs total: 676 [2021-03-25 04:46:45,643 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:46:45,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1326 [2021-03-25 04:46:45,643 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 54 flow [2021-03-25 04:46:45,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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 04:46:45,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:45,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:45,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:46:45,644 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 232024323, now seen corresponding path program 1 times [2021-03-25 04:46:45,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:45,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134891072] [2021-03-25 04:46:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:45,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:45,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:45,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:45,710 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 04:46:45,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134891072] [2021-03-25 04:46:45,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:45,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:46:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163843976] [2021-03-25 04:46:45,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:46:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:46:45,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:46:45,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 180 [2021-03-25 04:46:45,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 04:46:45,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:45,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 180 [2021-03-25 04:46:45,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:45,726 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 04:46:45,727 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 04:46:45,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 32 events. 3/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 48. Up to 10 conditions per place. [2021-03-25 04:46:45,727 INFO L132 encePairwiseOnDemand]: 176/180 looper letters, 3 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-25 04:46:45,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 70 flow [2021-03-25 04:46:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:46:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:46:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2021-03-25 04:46:45,729 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8907407407407407 [2021-03-25 04:46:45,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2021-03-25 04:46:45,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2021-03-25 04:46:45,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:45,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2021-03-25 04:46:45,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 04:46:45,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:46:45,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:46:45,732 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 54 flow. Second operand 3 states and 481 transitions. [2021-03-25 04:46:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 70 flow [2021-03-25 04:46:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:46:45,734 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 69 flow [2021-03-25 04:46:45,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-03-25 04:46:45,734 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -18 predicate places. [2021-03-25 04:46:45,734 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:45,734 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 22 transitions, 69 flow [2021-03-25 04:46:45,734 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 22 transitions, 69 flow [2021-03-25 04:46:45,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 22 transitions, 69 flow [2021-03-25 04:46:45,739 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 04:46:45,739 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 04:46:45,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 1 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2021-03-25 04:46:45,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 04:46:45,741 INFO L154 LiptonReduction]: Checked pairs total: 194 [2021-03-25 04:46:45,741 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:45,741 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 04:46:45,742 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 69 flow [2021-03-25 04:46:45,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 04:46:45,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:45,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:45,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:46:45,743 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1510994303, now seen corresponding path program 1 times [2021-03-25 04:46:45,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:45,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766564831] [2021-03-25 04:46:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:45,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:45,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 04:46:45,863 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-25 04:46:45,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 04:46:45,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:45,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:45,889 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 04:46:45,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766564831] [2021-03-25 04:46:45,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:45,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:46:45,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743747675] [2021-03-25 04:46:45,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:46:45,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:46:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:46:45,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 180 [2021-03-25 04:46:45,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 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 04:46:45,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:45,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 180 [2021-03-25 04:46:45,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:45,973 INFO L129 PetriNetUnfolder]: 47/123 cut-off events. [2021-03-25 04:46:45,973 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-03-25 04:46:45,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 123 events. 47/123 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 516 event pairs, 17 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 249. Up to 77 conditions per place. [2021-03-25 04:46:45,975 INFO L132 encePairwiseOnDemand]: 175/180 looper letters, 8 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2021-03-25 04:46:45,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 108 flow [2021-03-25 04:46:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:46:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:46:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2021-03-25 04:46:45,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7694444444444445 [2021-03-25 04:46:45,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2021-03-25 04:46:45,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2021-03-25 04:46:45,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:45,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2021-03-25 04:46:45,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 04:46:45,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 04:46:45,982 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 04:46:45,982 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 69 flow. Second operand 4 states and 554 transitions. [2021-03-25 04:46:45,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 108 flow [2021-03-25 04:46:45,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 04:46:45,983 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2021-03-25 04:46:45,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-25 04:46:45,984 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -14 predicate places. [2021-03-25 04:46:45,984 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:45,984 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 99 flow [2021-03-25 04:46:45,984 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 99 flow [2021-03-25 04:46:45,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 26 transitions, 99 flow [2021-03-25 04:46:45,990 INFO L129 PetriNetUnfolder]: 11/51 cut-off events. [2021-03-25 04:46:45,990 INFO L130 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2021-03-25 04:46:45,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 51 events. 11/51 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 158 event pairs, 3 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 105. Up to 15 conditions per place. [2021-03-25 04:46:45,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 244 [2021-03-25 04:46:45,993 INFO L154 LiptonReduction]: Checked pairs total: 194 [2021-03-25 04:46:45,993 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:45,993 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 04:46:45,994 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2021-03-25 04:46:45,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 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 04:46:45,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:45,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:45,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:46:45,995 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1185198679, now seen corresponding path program 1 times [2021-03-25 04:46:45,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:45,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129083852] [2021-03-25 04:46:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:46,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,101 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 04:46:46,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129083852] [2021-03-25 04:46:46,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:46,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:46:46,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620293298] [2021-03-25 04:46:46,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:46:46,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:46:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:46:46,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 180 [2021-03-25 04:46:46,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 04:46:46,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:46,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 180 [2021-03-25 04:46:46,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:46,192 INFO L129 PetriNetUnfolder]: 55/129 cut-off events. [2021-03-25 04:46:46,192 INFO L130 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2021-03-25 04:46:46,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 129 events. 55/129 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 515 event pairs, 8 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 336. Up to 76 conditions per place. [2021-03-25 04:46:46,194 INFO L132 encePairwiseOnDemand]: 173/180 looper letters, 9 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2021-03-25 04:46:46,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 158 flow [2021-03-25 04:46:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2021-03-25 04:46:46,197 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8022222222222222 [2021-03-25 04:46:46,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2021-03-25 04:46:46,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2021-03-25 04:46:46,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:46,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2021-03-25 04:46:46,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 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 04:46:46,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,201 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,201 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 5 states and 722 transitions. [2021-03-25 04:46:46,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 158 flow [2021-03-25 04:46:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 04:46:46,205 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 156 flow [2021-03-25 04:46:46,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-25 04:46:46,205 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2021-03-25 04:46:46,205 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:46,205 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 156 flow [2021-03-25 04:46:46,205 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 156 flow [2021-03-25 04:46:46,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 156 flow [2021-03-25 04:46:46,222 INFO L129 PetriNetUnfolder]: 52/130 cut-off events. [2021-03-25 04:46:46,222 INFO L130 PetriNetUnfolder]: For 144/156 co-relation queries the response was YES. [2021-03-25 04:46:46,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 130 events. 52/130 cut-off events. For 144/156 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 576 event pairs, 11 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 367. Up to 63 conditions per place. [2021-03-25 04:46:46,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 282 [2021-03-25 04:46:46,229 INFO L154 LiptonReduction]: Checked pairs total: 176 [2021-03-25 04:46:46,229 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:46,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 04:46:46,230 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 156 flow [2021-03-25 04:46:46,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 04:46:46,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:46,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:46,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:46:46,232 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1262396119, now seen corresponding path program 2 times [2021-03-25 04:46:46,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:46,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122605998] [2021-03-25 04:46:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:46,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 04:46:46,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,358 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 04:46:46,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122605998] [2021-03-25 04:46:46,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:46,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:46:46,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896057423] [2021-03-25 04:46:46,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:46:46,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:46,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:46:46,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:46:46,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 180 [2021-03-25 04:46:46,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 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 04:46:46,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:46,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 180 [2021-03-25 04:46:46,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:46,440 INFO L129 PetriNetUnfolder]: 57/135 cut-off events. [2021-03-25 04:46:46,440 INFO L130 PetriNetUnfolder]: For 177/189 co-relation queries the response was YES. [2021-03-25 04:46:46,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 135 events. 57/135 cut-off events. For 177/189 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 553 event pairs, 10 based on Foata normal form. 9/136 useless extension candidates. Maximal degree in co-relation 483. Up to 78 conditions per place. [2021-03-25 04:46:46,442 INFO L132 encePairwiseOnDemand]: 173/180 looper letters, 10 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2021-03-25 04:46:46,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 222 flow [2021-03-25 04:46:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2021-03-25 04:46:46,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2021-03-25 04:46:46,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2021-03-25 04:46:46,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2021-03-25 04:46:46,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:46,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2021-03-25 04:46:46,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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 04:46:46,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,450 INFO L185 Difference]: Start difference. First operand has 41 places, 32 transitions, 156 flow. Second operand 5 states and 687 transitions. [2021-03-25 04:46:46,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 222 flow [2021-03-25 04:46:46,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 212 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 04:46:46,455 INFO L241 Difference]: Finished difference. Result has 45 places, 34 transitions, 191 flow [2021-03-25 04:46:46,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2021-03-25 04:46:46,456 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2021-03-25 04:46:46,456 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:46,456 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 34 transitions, 191 flow [2021-03-25 04:46:46,457 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 34 transitions, 191 flow [2021-03-25 04:46:46,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 191 flow [2021-03-25 04:46:46,475 INFO L129 PetriNetUnfolder]: 50/130 cut-off events. [2021-03-25 04:46:46,476 INFO L130 PetriNetUnfolder]: For 261/273 co-relation queries the response was YES. [2021-03-25 04:46:46,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 130 events. 50/130 cut-off events. For 261/273 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 577 event pairs, 11 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 428. Up to 63 conditions per place. [2021-03-25 04:46:46,477 INFO L142 LiptonReduction]: Number of co-enabled transitions 296 [2021-03-25 04:46:46,489 INFO L154 LiptonReduction]: Checked pairs total: 270 [2021-03-25 04:46:46,489 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:46,489 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 04:46:46,491 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 191 flow [2021-03-25 04:46:46,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 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 04:46:46,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:46,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:46,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:46:46,492 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash -778526841, now seen corresponding path program 3 times [2021-03-25 04:46:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:46,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665398656] [2021-03-25 04:46:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:46,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,613 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 04:46:46,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665398656] [2021-03-25 04:46:46,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:46,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:46:46,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098187876] [2021-03-25 04:46:46,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:46:46,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:46,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:46:46,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:46:46,616 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 180 [2021-03-25 04:46:46,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 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 04:46:46,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:46,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 180 [2021-03-25 04:46:46,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:46,720 INFO L129 PetriNetUnfolder]: 59/139 cut-off events. [2021-03-25 04:46:46,720 INFO L130 PetriNetUnfolder]: For 304/316 co-relation queries the response was YES. [2021-03-25 04:46:46,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 139 events. 59/139 cut-off events. For 304/316 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 568 event pairs, 10 based on Foata normal form. 9/140 useless extension candidates. Maximal degree in co-relation 560. Up to 80 conditions per place. [2021-03-25 04:46:46,722 INFO L132 encePairwiseOnDemand]: 174/180 looper letters, 10 selfloop transitions, 14 changer transitions 0/39 dead transitions. [2021-03-25 04:46:46,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 277 flow [2021-03-25 04:46:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 701 transitions. [2021-03-25 04:46:46,725 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7788888888888889 [2021-03-25 04:46:46,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 701 transitions. [2021-03-25 04:46:46,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 701 transitions. [2021-03-25 04:46:46,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:46,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 701 transitions. [2021-03-25 04:46:46,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 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 04:46:46,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:46,729 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 191 flow. Second operand 5 states and 701 transitions. [2021-03-25 04:46:46,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 277 flow [2021-03-25 04:46:46,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 254 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 04:46:46,733 INFO L241 Difference]: Finished difference. Result has 47 places, 38 transitions, 242 flow [2021-03-25 04:46:46,733 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2021-03-25 04:46:46,733 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2021-03-25 04:46:46,733 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:46,733 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 38 transitions, 242 flow [2021-03-25 04:46:46,733 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 38 transitions, 242 flow [2021-03-25 04:46:46,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 242 flow [2021-03-25 04:46:46,755 INFO L129 PetriNetUnfolder]: 52/132 cut-off events. [2021-03-25 04:46:46,755 INFO L130 PetriNetUnfolder]: For 377/403 co-relation queries the response was YES. [2021-03-25 04:46:46,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 132 events. 52/132 cut-off events. For 377/403 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 583 event pairs, 9 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 485. Up to 65 conditions per place. [2021-03-25 04:46:46,757 INFO L142 LiptonReduction]: Number of co-enabled transitions 320 [2021-03-25 04:46:46,762 INFO L154 LiptonReduction]: Checked pairs total: 378 [2021-03-25 04:46:46,763 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:46,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 04:46:46,768 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 242 flow [2021-03-25 04:46:46,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 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 04:46:46,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:46,769 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:46,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 04:46:46,769 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash -406322241, now seen corresponding path program 4 times [2021-03-25 04:46:46,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:46,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402290935] [2021-03-25 04:46:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:46,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 04:46:46,855 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-03-25 04:46:46,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 04:46:46,877 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.8 percent of original size [2021-03-25 04:46:46,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-25 04:46:46,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:46,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:46,912 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 04:46:46,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402290935] [2021-03-25 04:46:46,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:46,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:46:46,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980382040] [2021-03-25 04:46:46,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:46:46,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:46,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:46:46,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:46:46,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 180 [2021-03-25 04:46:46,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 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 04:46:46,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:46,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 180 [2021-03-25 04:46:46,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:47,028 INFO L129 PetriNetUnfolder]: 58/158 cut-off events. [2021-03-25 04:46:47,028 INFO L130 PetriNetUnfolder]: For 541/553 co-relation queries the response was YES. [2021-03-25 04:46:47,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 158 events. 58/158 cut-off events. For 541/553 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 772 event pairs, 1 based on Foata normal form. 13/164 useless extension candidates. Maximal degree in co-relation 661. Up to 77 conditions per place. [2021-03-25 04:46:47,030 INFO L132 encePairwiseOnDemand]: 174/180 looper letters, 12 selfloop transitions, 16 changer transitions 0/43 dead transitions. [2021-03-25 04:46:47,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 336 flow [2021-03-25 04:46:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:46:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:46:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2021-03-25 04:46:47,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2021-03-25 04:46:47,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2021-03-25 04:46:47,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2021-03-25 04:46:47,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:47,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2021-03-25 04:46:47,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 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 04:46:47,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 04:46:47,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 04:46:47,039 INFO L185 Difference]: Start difference. First operand has 47 places, 38 transitions, 242 flow. Second operand 6 states and 820 transitions. [2021-03-25 04:46:47,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 336 flow [2021-03-25 04:46:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 326 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-03-25 04:46:47,042 INFO L241 Difference]: Finished difference. Result has 53 places, 40 transitions, 303 flow [2021-03-25 04:46:47,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2021-03-25 04:46:47,043 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2021-03-25 04:46:47,043 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:47,043 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 40 transitions, 303 flow [2021-03-25 04:46:47,043 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 40 transitions, 303 flow [2021-03-25 04:46:47,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 40 transitions, 303 flow [2021-03-25 04:46:47,065 INFO L129 PetriNetUnfolder]: 50/142 cut-off events. [2021-03-25 04:46:47,066 INFO L130 PetriNetUnfolder]: For 495/509 co-relation queries the response was YES. [2021-03-25 04:46:47,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 142 events. 50/142 cut-off events. For 495/509 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 683 event pairs, 5 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 607. Up to 67 conditions per place. [2021-03-25 04:46:47,068 INFO L142 LiptonReduction]: Number of co-enabled transitions 338 [2021-03-25 04:46:47,077 INFO L154 LiptonReduction]: Checked pairs total: 407 [2021-03-25 04:46:47,077 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:47,078 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 04:46:47,079 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 303 flow [2021-03-25 04:46:47,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 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 04:46:47,079 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:47,080 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:47,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 04:46:47,080 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2026736538, now seen corresponding path program 1 times [2021-03-25 04:46:47,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189361835] [2021-03-25 04:46:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:47,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:47,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 04:46:47,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 04:46:47,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 04:46:47,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 04:46:47,231 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 04:46:47,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189361835] [2021-03-25 04:46:47,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:47,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:46:47,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127400678] [2021-03-25 04:46:47,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:46:47,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:46:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:46:47,233 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 180 [2021-03-25 04:46:47,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:46:47,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:47,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 180 [2021-03-25 04:46:47,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:47,334 INFO L129 PetriNetUnfolder]: 60/163 cut-off events. [2021-03-25 04:46:47,334 INFO L130 PetriNetUnfolder]: For 661/675 co-relation queries the response was YES. [2021-03-25 04:46:47,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 163 events. 60/163 cut-off events. For 661/675 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 776 event pairs, 5 based on Foata normal form. 11/166 useless extension candidates. Maximal degree in co-relation 801. Up to 81 conditions per place. [2021-03-25 04:46:47,336 INFO L132 encePairwiseOnDemand]: 173/180 looper letters, 10 selfloop transitions, 19 changer transitions 0/44 dead transitions. [2021-03-25 04:46:47,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 44 transitions, 398 flow [2021-03-25 04:46:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:46:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:46:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 855 transitions. [2021-03-25 04:46:47,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2021-03-25 04:46:47,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 855 transitions. [2021-03-25 04:46:47,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 855 transitions. [2021-03-25 04:46:47,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:47,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 855 transitions. [2021-03-25 04:46:47,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 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 04:46:47,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 04:46:47,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 04:46:47,344 INFO L185 Difference]: Start difference. First operand has 53 places, 40 transitions, 303 flow. Second operand 6 states and 855 transitions. [2021-03-25 04:46:47,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 44 transitions, 398 flow [2021-03-25 04:46:47,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 373 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-25 04:46:47,350 INFO L241 Difference]: Finished difference. Result has 56 places, 42 transitions, 360 flow [2021-03-25 04:46:47,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2021-03-25 04:46:47,350 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2021-03-25 04:46:47,350 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:47,350 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 42 transitions, 360 flow [2021-03-25 04:46:47,350 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 42 transitions, 360 flow [2021-03-25 04:46:47,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 42 transitions, 360 flow [2021-03-25 04:46:47,371 INFO L129 PetriNetUnfolder]: 51/151 cut-off events. [2021-03-25 04:46:47,371 INFO L130 PetriNetUnfolder]: For 626/658 co-relation queries the response was YES. [2021-03-25 04:46:47,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 151 events. 51/151 cut-off events. For 626/658 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 746 event pairs, 11 based on Foata normal form. 19/158 useless extension candidates. Maximal degree in co-relation 680. Up to 73 conditions per place. [2021-03-25 04:46:47,373 INFO L142 LiptonReduction]: Number of co-enabled transitions 356 [2021-03-25 04:46:47,378 INFO L154 LiptonReduction]: Checked pairs total: 439 [2021-03-25 04:46:47,379 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:47,379 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 04:46:47,379 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 360 flow [2021-03-25 04:46:47,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:46:47,380 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:47,380 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:47,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 04:46:47,380 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1111295570, now seen corresponding path program 2 times [2021-03-25 04:46:47,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:47,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698185645] [2021-03-25 04:46:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:47,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:47,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 04:46:47,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 04:46:47,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 04:46:47,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 04:46:47,496 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 04:46:47,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698185645] [2021-03-25 04:46:47,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:47,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 04:46:47,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526268735] [2021-03-25 04:46:47,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 04:46:47,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 04:46:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 04:46:47,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 180 [2021-03-25 04:46:47,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 04:46:47,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:47,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 180 [2021-03-25 04:46:47,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:47,596 INFO L129 PetriNetUnfolder]: 60/172 cut-off events. [2021-03-25 04:46:47,596 INFO L130 PetriNetUnfolder]: For 724/736 co-relation queries the response was YES. [2021-03-25 04:46:47,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 172 events. 60/172 cut-off events. For 724/736 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 898 event pairs, 3 based on Foata normal form. 10/174 useless extension candidates. Maximal degree in co-relation 863. Up to 90 conditions per place. [2021-03-25 04:46:47,598 INFO L132 encePairwiseOnDemand]: 173/180 looper letters, 18 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2021-03-25 04:46:47,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 442 flow [2021-03-25 04:46:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 682 transitions. [2021-03-25 04:46:47,601 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7577777777777778 [2021-03-25 04:46:47,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 682 transitions. [2021-03-25 04:46:47,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 682 transitions. [2021-03-25 04:46:47,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:47,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 682 transitions. [2021-03-25 04:46:47,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 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 04:46:47,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:47,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:47,605 INFO L185 Difference]: Start difference. First operand has 56 places, 42 transitions, 360 flow. Second operand 5 states and 682 transitions. [2021-03-25 04:46:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 442 flow [2021-03-25 04:46:47,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 411 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 04:46:47,609 INFO L241 Difference]: Finished difference. Result has 57 places, 43 transitions, 372 flow [2021-03-25 04:46:47,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2021-03-25 04:46:47,610 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2021-03-25 04:46:47,610 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:47,610 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 43 transitions, 372 flow [2021-03-25 04:46:47,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 43 transitions, 372 flow [2021-03-25 04:46:47,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 43 transitions, 372 flow [2021-03-25 04:46:47,632 INFO L129 PetriNetUnfolder]: 51/153 cut-off events. [2021-03-25 04:46:47,632 INFO L130 PetriNetUnfolder]: For 716/749 co-relation queries the response was YES. [2021-03-25 04:46:47,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 153 events. 51/153 cut-off events. For 716/749 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 763 event pairs, 13 based on Foata normal form. 20/162 useless extension candidates. Maximal degree in co-relation 690. Up to 75 conditions per place. [2021-03-25 04:46:47,635 INFO L142 LiptonReduction]: Number of co-enabled transitions 364 [2021-03-25 04:46:47,640 INFO L154 LiptonReduction]: Checked pairs total: 509 [2021-03-25 04:46:47,641 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:47,641 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 04:46:47,642 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 372 flow [2021-03-25 04:46:47,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 04:46:47,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:47,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:47,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 04:46:47,643 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1124096090, now seen corresponding path program 3 times [2021-03-25 04:46:47,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:47,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747606465] [2021-03-25 04:46:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:47,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 04:46:47,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 04:46:47,720 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 04:46:47,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 04:46:47,731 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-03-25 04:46:47,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:46:47,745 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 04:46:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 04:46:47,754 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 04:46:47,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747606465] [2021-03-25 04:46:47,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:47,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 04:46:47,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578769799] [2021-03-25 04:46:47,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 04:46:47,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:47,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 04:46:47,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 04:46:47,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 180 [2021-03-25 04:46:47,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 04:46:47,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:47,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 180 [2021-03-25 04:46:47,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:47,875 INFO L129 PetriNetUnfolder]: 57/162 cut-off events. [2021-03-25 04:46:47,875 INFO L130 PetriNetUnfolder]: For 774/788 co-relation queries the response was YES. [2021-03-25 04:46:47,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 162 events. 57/162 cut-off events. For 774/788 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 786 event pairs, 3 based on Foata normal form. 10/165 useless extension candidates. Maximal degree in co-relation 828. Up to 79 conditions per place. [2021-03-25 04:46:47,877 INFO L132 encePairwiseOnDemand]: 175/180 looper letters, 17 selfloop transitions, 14 changer transitions 0/46 dead transitions. [2021-03-25 04:46:47,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 452 flow [2021-03-25 04:46:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2021-03-25 04:46:47,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7566666666666667 [2021-03-25 04:46:47,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2021-03-25 04:46:47,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2021-03-25 04:46:47,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:47,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2021-03-25 04:46:47,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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 04:46:47,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:47,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:47,883 INFO L185 Difference]: Start difference. First operand has 57 places, 43 transitions, 372 flow. Second operand 5 states and 681 transitions. [2021-03-25 04:46:47,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 452 flow [2021-03-25 04:46:47,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 428 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 04:46:47,887 INFO L241 Difference]: Finished difference. Result has 58 places, 43 transitions, 390 flow [2021-03-25 04:46:47,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2021-03-25 04:46:47,888 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2021-03-25 04:46:47,888 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:47,888 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 43 transitions, 390 flow [2021-03-25 04:46:47,888 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 43 transitions, 390 flow [2021-03-25 04:46:47,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 43 transitions, 390 flow [2021-03-25 04:46:47,907 INFO L129 PetriNetUnfolder]: 49/147 cut-off events. [2021-03-25 04:46:47,907 INFO L130 PetriNetUnfolder]: For 902/935 co-relation queries the response was YES. [2021-03-25 04:46:47,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 147 events. 49/147 cut-off events. For 902/935 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 738 event pairs, 11 based on Foata normal form. 20/156 useless extension candidates. Maximal degree in co-relation 704. Up to 71 conditions per place. [2021-03-25 04:46:47,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 362 [2021-03-25 04:46:47,914 INFO L154 LiptonReduction]: Checked pairs total: 499 [2021-03-25 04:46:47,914 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:47,914 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 04:46:47,915 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 390 flow [2021-03-25 04:46:47,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 04:46:47,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:47,915 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:47,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 04:46:47,915 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1981771088, now seen corresponding path program 1 times [2021-03-25 04:46:47,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:47,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923718231] [2021-03-25 04:46:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:47,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:47,957 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:46:47,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:46:47,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:47,964 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 04:46:47,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923718231] [2021-03-25 04:46:47,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:47,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:46:47,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941672381] [2021-03-25 04:46:47,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:46:47,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:46:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:46:47,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 180 [2021-03-25 04:46:47,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 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 04:46:47,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:47,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 180 [2021-03-25 04:46:47,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:48,026 INFO L129 PetriNetUnfolder]: 111/276 cut-off events. [2021-03-25 04:46:48,026 INFO L130 PetriNetUnfolder]: For 1096/1198 co-relation queries the response was YES. [2021-03-25 04:46:48,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 276 events. 111/276 cut-off events. For 1096/1198 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1580 event pairs, 32 based on Foata normal form. 65/316 useless extension candidates. Maximal degree in co-relation 1065. Up to 126 conditions per place. [2021-03-25 04:46:48,029 INFO L132 encePairwiseOnDemand]: 174/180 looper letters, 10 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2021-03-25 04:46:48,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 446 flow [2021-03-25 04:46:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:46:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:46:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 763 transitions. [2021-03-25 04:46:48,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8477777777777777 [2021-03-25 04:46:48,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 763 transitions. [2021-03-25 04:46:48,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 763 transitions. [2021-03-25 04:46:48,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:48,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 763 transitions. [2021-03-25 04:46:48,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 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 04:46:48,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:48,035 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 04:46:48,035 INFO L185 Difference]: Start difference. First operand has 58 places, 43 transitions, 390 flow. Second operand 5 states and 763 transitions. [2021-03-25 04:46:48,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 446 flow [2021-03-25 04:46:48,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 416 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 04:46:48,040 INFO L241 Difference]: Finished difference. Result has 61 places, 50 transitions, 428 flow [2021-03-25 04:46:48,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2021-03-25 04:46:48,040 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2021-03-25 04:46:48,040 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:48,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 50 transitions, 428 flow [2021-03-25 04:46:48,041 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 50 transitions, 428 flow [2021-03-25 04:46:48,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 50 transitions, 428 flow [2021-03-25 04:46:48,092 INFO L129 PetriNetUnfolder]: 115/281 cut-off events. [2021-03-25 04:46:48,092 INFO L130 PetriNetUnfolder]: For 1024/1128 co-relation queries the response was YES. [2021-03-25 04:46:48,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 281 events. 115/281 cut-off events. For 1024/1128 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1588 event pairs, 37 based on Foata normal form. 32/288 useless extension candidates. Maximal degree in co-relation 1171. Up to 127 conditions per place. [2021-03-25 04:46:48,096 INFO L142 LiptonReduction]: Number of co-enabled transitions 452 [2021-03-25 04:46:48,302 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-25 04:46:48,701 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2021-03-25 04:46:48,843 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-25 04:46:48,854 INFO L154 LiptonReduction]: Checked pairs total: 534 [2021-03-25 04:46:48,854 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:46:48,854 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 814 [2021-03-25 04:46:48,855 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 432 flow [2021-03-25 04:46:48,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 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 04:46:48,855 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:48,855 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:48,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 04:46:48,855 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash 801706571, now seen corresponding path program 1 times [2021-03-25 04:46:48,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:48,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600860634] [2021-03-25 04:46:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:48,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:48,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:48,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:48,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:48,897 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:46:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:46:48,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:48,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:48,905 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 04:46:48,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600860634] [2021-03-25 04:46:48,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:48,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:46:48,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424338422] [2021-03-25 04:46:48,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:46:48,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:48,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:46:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:46:48,907 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 181 [2021-03-25 04:46:48,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 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 04:46:48,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:48,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 181 [2021-03-25 04:46:48,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:48,977 INFO L129 PetriNetUnfolder]: 56/185 cut-off events. [2021-03-25 04:46:48,977 INFO L130 PetriNetUnfolder]: For 982/1456 co-relation queries the response was YES. [2021-03-25 04:46:48,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 185 events. 56/185 cut-off events. For 982/1456 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 997 event pairs, 4 based on Foata normal form. 135/305 useless extension candidates. Maximal degree in co-relation 808. Up to 98 conditions per place. [2021-03-25 04:46:48,979 INFO L132 encePairwiseOnDemand]: 175/181 looper letters, 5 selfloop transitions, 15 changer transitions 3/51 dead transitions. [2021-03-25 04:46:48,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 51 transitions, 427 flow [2021-03-25 04:46:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:46:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:46:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1075 transitions. [2021-03-25 04:46:48,982 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8484609313338595 [2021-03-25 04:46:48,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1075 transitions. [2021-03-25 04:46:48,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1075 transitions. [2021-03-25 04:46:48,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:48,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1075 transitions. [2021-03-25 04:46:48,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.57142857142858) internal successors, (1075), 7 states have internal predecessors, (1075), 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 04:46:48,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 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 04:46:48,987 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 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 04:46:48,987 INFO L185 Difference]: Start difference. First operand has 61 places, 50 transitions, 432 flow. Second operand 7 states and 1075 transitions. [2021-03-25 04:46:48,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 51 transitions, 427 flow [2021-03-25 04:46:48,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 389 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-25 04:46:48,990 INFO L241 Difference]: Finished difference. Result has 63 places, 48 transitions, 384 flow [2021-03-25 04:46:48,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2021-03-25 04:46:48,991 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2021-03-25 04:46:48,991 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:48,991 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 48 transitions, 384 flow [2021-03-25 04:46:48,991 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 48 transitions, 384 flow [2021-03-25 04:46:48,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 48 transitions, 384 flow [2021-03-25 04:46:49,010 INFO L129 PetriNetUnfolder]: 52/179 cut-off events. [2021-03-25 04:46:49,010 INFO L130 PetriNetUnfolder]: For 801/963 co-relation queries the response was YES. [2021-03-25 04:46:49,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 179 events. 52/179 cut-off events. For 801/963 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 994 event pairs, 4 based on Foata normal form. 12/179 useless extension candidates. Maximal degree in co-relation 804. Up to 92 conditions per place. [2021-03-25 04:46:49,013 INFO L142 LiptonReduction]: Number of co-enabled transitions 500 [2021-03-25 04:46:49,021 INFO L154 LiptonReduction]: Checked pairs total: 446 [2021-03-25 04:46:49,021 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:46:49,021 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 04:46:49,022 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 368 flow [2021-03-25 04:46:49,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 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 04:46:49,022 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:49,022 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:49,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 04:46:49,022 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 767207607, now seen corresponding path program 1 times [2021-03-25 04:46:49,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:49,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876472904] [2021-03-25 04:46:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:49,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:49,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:49,063 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 04:46:49,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876472904] [2021-03-25 04:46:49,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:49,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:46:49,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133185310] [2021-03-25 04:46:49,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:46:49,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:49,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:46:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:46:49,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 181 [2021-03-25 04:46:49,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 04:46:49,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:49,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 181 [2021-03-25 04:46:49,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:49,094 INFO L129 PetriNetUnfolder]: 52/163 cut-off events. [2021-03-25 04:46:49,094 INFO L130 PetriNetUnfolder]: For 795/834 co-relation queries the response was YES. [2021-03-25 04:46:49,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 163 events. 52/163 cut-off events. For 795/834 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 758 event pairs, 6 based on Foata normal form. 14/169 useless extension candidates. Maximal degree in co-relation 757. Up to 77 conditions per place. [2021-03-25 04:46:49,096 INFO L132 encePairwiseOnDemand]: 178/181 looper letters, 3 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2021-03-25 04:46:49,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 40 transitions, 323 flow [2021-03-25 04:46:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:46:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:46:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2021-03-25 04:46:49,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8895027624309392 [2021-03-25 04:46:49,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2021-03-25 04:46:49,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2021-03-25 04:46:49,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:49,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2021-03-25 04:46:49,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 04:46:49,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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 04:46:49,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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 04:46:49,101 INFO L185 Difference]: Start difference. First operand has 63 places, 46 transitions, 368 flow. Second operand 3 states and 483 transitions. [2021-03-25 04:46:49,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 40 transitions, 323 flow [2021-03-25 04:46:49,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 40 transitions, 301 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-25 04:46:49,104 INFO L241 Difference]: Finished difference. Result has 57 places, 40 transitions, 300 flow [2021-03-25 04:46:49,104 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2021-03-25 04:46:49,104 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2021-03-25 04:46:49,104 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:49,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 40 transitions, 300 flow [2021-03-25 04:46:49,105 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 40 transitions, 300 flow [2021-03-25 04:46:49,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 40 transitions, 300 flow [2021-03-25 04:46:49,121 INFO L129 PetriNetUnfolder]: 52/163 cut-off events. [2021-03-25 04:46:49,122 INFO L130 PetriNetUnfolder]: For 449/466 co-relation queries the response was YES. [2021-03-25 04:46:49,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 163 events. 52/163 cut-off events. For 449/466 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 783 event pairs, 6 based on Foata normal form. 8/163 useless extension candidates. Maximal degree in co-relation 647. Up to 56 conditions per place. [2021-03-25 04:46:49,124 INFO L142 LiptonReduction]: Number of co-enabled transitions 302 [2021-03-25 04:46:49,127 INFO L154 LiptonReduction]: Checked pairs total: 142 [2021-03-25 04:46:49,127 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:46:49,127 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-25 04:46:49,127 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 300 flow [2021-03-25 04:46:49,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 04:46:49,127 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:49,127 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:49,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 04:46:49,128 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1199959332, now seen corresponding path program 1 times [2021-03-25 04:46:49,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:49,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538954066] [2021-03-25 04:46:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:49,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:49,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:49,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:49,188 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:46:49,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:46:49,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:49,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:49,196 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 04:46:49,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538954066] [2021-03-25 04:46:49,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:49,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 04:46:49,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233839585] [2021-03-25 04:46:49,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:46:49,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:49,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:46:49,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:46:49,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 181 [2021-03-25 04:46:49,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 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 04:46:49,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:49,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 181 [2021-03-25 04:46:49,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:49,259 INFO L129 PetriNetUnfolder]: 32/120 cut-off events. [2021-03-25 04:46:49,260 INFO L130 PetriNetUnfolder]: For 324/387 co-relation queries the response was YES. [2021-03-25 04:46:49,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 120 events. 32/120 cut-off events. For 324/387 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 526 event pairs, 0 based on Foata normal form. 52/166 useless extension candidates. Maximal degree in co-relation 500. Up to 45 conditions per place. [2021-03-25 04:46:49,261 INFO L132 encePairwiseOnDemand]: 175/181 looper letters, 2 selfloop transitions, 11 changer transitions 5/44 dead transitions. [2021-03-25 04:46:49,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 44 transitions, 362 flow [2021-03-25 04:46:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:46:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:46:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1068 transitions. [2021-03-25 04:46:49,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8429360694554064 [2021-03-25 04:46:49,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1068 transitions. [2021-03-25 04:46:49,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1068 transitions. [2021-03-25 04:46:49,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:49,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1068 transitions. [2021-03-25 04:46:49,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 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 04:46:49,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 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 04:46:49,269 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 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 04:46:49,269 INFO L185 Difference]: Start difference. First operand has 57 places, 40 transitions, 300 flow. Second operand 7 states and 1068 transitions. [2021-03-25 04:46:49,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 44 transitions, 362 flow [2021-03-25 04:46:49,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 311 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-03-25 04:46:49,272 INFO L241 Difference]: Finished difference. Result has 63 places, 39 transitions, 287 flow [2021-03-25 04:46:49,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2021-03-25 04:46:49,272 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2021-03-25 04:46:49,272 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:49,272 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 39 transitions, 287 flow [2021-03-25 04:46:49,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 39 transitions, 287 flow [2021-03-25 04:46:49,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 39 transitions, 287 flow [2021-03-25 04:46:49,280 INFO L129 PetriNetUnfolder]: 14/63 cut-off events. [2021-03-25 04:46:49,280 INFO L130 PetriNetUnfolder]: For 128/134 co-relation queries the response was YES. [2021-03-25 04:46:49,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 63 events. 14/63 cut-off events. For 128/134 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 196 event pairs, 0 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 238. Up to 23 conditions per place. [2021-03-25 04:46:49,281 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 04:46:49,612 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-25 04:46:49,733 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-25 04:46:50,078 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-25 04:46:50,215 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-25 04:46:50,864 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2021-03-25 04:46:51,083 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2021-03-25 04:46:53,038 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 349 DAG size of output: 274 [2021-03-25 04:46:53,554 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2021-03-25 04:46:53,559 INFO L154 LiptonReduction]: Checked pairs total: 263 [2021-03-25 04:46:53,559 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 04:46:53,559 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4287 [2021-03-25 04:46:53,559 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 275 flow [2021-03-25 04:46:53,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 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 04:46:53,560 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:53,560 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:53,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 04:46:53,560 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1333835132, now seen corresponding path program 1 times [2021-03-25 04:46:53,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:53,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013568541] [2021-03-25 04:46:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:46:53,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:53,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:46:53,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:53,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:53,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:46:53,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:46:53,604 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 04:46:53,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013568541] [2021-03-25 04:46:53,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:46:53,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:46:53,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071435025] [2021-03-25 04:46:53,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:46:53,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:46:53,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:46:53,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:46:53,606 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 188 [2021-03-25 04:46:53,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 04:46:53,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:46:53,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 188 [2021-03-25 04:46:53,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:46:53,634 INFO L129 PetriNetUnfolder]: 23/80 cut-off events. [2021-03-25 04:46:53,634 INFO L130 PetriNetUnfolder]: For 650/680 co-relation queries the response was YES. [2021-03-25 04:46:53,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 80 events. 23/80 cut-off events. For 650/680 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 287 event pairs, 0 based on Foata normal form. 13/91 useless extension candidates. Maximal degree in co-relation 322. Up to 31 conditions per place. [2021-03-25 04:46:53,635 INFO L132 encePairwiseOnDemand]: 185/188 looper letters, 3 selfloop transitions, 1 changer transitions 8/35 dead transitions. [2021-03-25 04:46:53,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 35 transitions, 287 flow [2021-03-25 04:46:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:46:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:46:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2021-03-25 04:46:53,637 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8803191489361702 [2021-03-25 04:46:53,638 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2021-03-25 04:46:53,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2021-03-25 04:46:53,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:46:53,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2021-03-25 04:46:53,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 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 04:46:53,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 04:46:53,641 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 04:46:53,641 INFO L185 Difference]: Start difference. First operand has 57 places, 34 transitions, 275 flow. Second operand 4 states and 662 transitions. [2021-03-25 04:46:53,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 35 transitions, 287 flow [2021-03-25 04:46:53,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 247 flow, removed 9 selfloop flow, removed 9 redundant places. [2021-03-25 04:46:53,644 INFO L241 Difference]: Finished difference. Result has 53 places, 27 transitions, 177 flow [2021-03-25 04:46:53,644 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=27} [2021-03-25 04:46:53,644 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2021-03-25 04:46:53,644 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:46:53,644 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 27 transitions, 177 flow [2021-03-25 04:46:53,644 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 27 transitions, 177 flow [2021-03-25 04:46:53,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 27 transitions, 177 flow [2021-03-25 04:46:53,649 INFO L129 PetriNetUnfolder]: 10/43 cut-off events. [2021-03-25 04:46:53,649 INFO L130 PetriNetUnfolder]: For 152/158 co-relation queries the response was YES. [2021-03-25 04:46:53,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 43 events. 10/43 cut-off events. For 152/158 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 99 event pairs, 0 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 135. Up to 14 conditions per place. [2021-03-25 04:46:53,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 04:46:53,861 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-25 04:46:54,387 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-25 04:46:54,518 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-25 04:46:54,643 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-25 04:46:54,912 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 90 [2021-03-25 04:46:55,127 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 04:46:55,128 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:46:55,128 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1484 [2021-03-25 04:46:55,128 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 180 flow [2021-03-25 04:46:55,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 04:46:55,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:46:55,129 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:46:55,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 04:46:55,129 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:46:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:46:55,130 INFO L82 PathProgramCache]: Analyzing trace with hash -556736786, now seen corresponding path program 1 times [2021-03-25 04:46:55,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:46:55,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37292969] [2021-03-25 04:46:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:46:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 04:46:55,151 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 04:46:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 04:46:55,175 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 04:46:55,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 04:46:55,199 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 04:46:55,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 04:46:55,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:46:55 BasicIcfg [2021-03-25 04:46:55,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:46:55,263 INFO L168 Benchmark]: Toolchain (without parser) took 24337.58 ms. Allocated memory was 335.5 MB in the beginning and 771.8 MB in the end (delta: 436.2 MB). Free memory was 298.6 MB in the beginning and 549.7 MB in the end (delta: -251.1 MB). Peak memory consumption was 187.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,263 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 335.5 MB. Free memory was 317.1 MB in the beginning and 317.0 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:46:55,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.93 ms. Allocated memory is still 335.5 MB. Free memory was 298.4 MB in the beginning and 294.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.59 ms. Allocated memory is still 335.5 MB. Free memory was 294.5 MB in the beginning and 291.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,264 INFO L168 Benchmark]: Boogie Preprocessor took 43.04 ms. Allocated memory is still 335.5 MB. Free memory was 291.3 MB in the beginning and 289.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,264 INFO L168 Benchmark]: RCFGBuilder took 1658.08 ms. Allocated memory is still 335.5 MB. Free memory was 289.2 MB in the beginning and 272.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 163.8 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,264 INFO L168 Benchmark]: TraceAbstraction took 21946.75 ms. Allocated memory was 335.5 MB in the beginning and 771.8 MB in the end (delta: 436.2 MB). Free memory was 272.2 MB in the beginning and 549.7 MB in the end (delta: -277.4 MB). Peak memory consumption was 158.8 MB. Max. memory is 16.0 GB. [2021-03-25 04:46:55,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 335.5 MB. Free memory was 317.1 MB in the beginning and 317.0 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 601.93 ms. Allocated memory is still 335.5 MB. Free memory was 298.4 MB in the beginning and 294.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 80.59 ms. Allocated memory is still 335.5 MB. Free memory was 294.5 MB in the beginning and 291.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 43.04 ms. Allocated memory is still 335.5 MB. Free memory was 291.3 MB in the beginning and 289.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1658.08 ms. Allocated memory is still 335.5 MB. Free memory was 289.2 MB in the beginning and 272.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 163.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 21946.75 ms. Allocated memory was 335.5 MB in the beginning and 771.8 MB in the end (delta: 436.2 MB). Free memory was 272.2 MB in the beginning and 549.7 MB in the end (delta: -277.4 MB). Peak memory consumption was 158.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7622.2ms, 105 PlacesBefore, 49 PlacesAfterwards, 97 TransitionsBefore, 40 TransitionsAfterwards, 1738 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 2726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1562, positive: 1488, positive conditional: 0, positive unconditional: 1488, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 890, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 890, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1562, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 890, unknown conditional: 0, unknown unconditional: 890] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 86, Positive conditional cache size: 0, Positive unconditional cache size: 86, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2588.5ms, 46 PlacesBefore, 33 PlacesAfterwards, 34 TransitionsBefore, 24 TransitionsAfterwards, 254 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 1170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 342, positive: 255, positive conditional: 0, positive unconditional: 255, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 342, positive: 239, positive conditional: 0, positive unconditional: 239, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 111, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1325.8ms, 34 PlacesBefore, 30 PlacesAfterwards, 23 TransitionsBefore, 20 TransitionsAfterwards, 202 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 676 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 273, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 273, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8ms, 31 PlacesBefore, 31 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 64, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 64, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1ms, 35 PlacesBefore, 35 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 244 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 51, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.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] , Cache Queries: [ total: 51, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.0ms, 41 PlacesBefore, 41 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 176 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.8ms, 45 PlacesBefore, 45 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 296 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 270 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 54, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.2ms, 47 PlacesBefore, 47 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 320 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 55, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.1ms, 53 PlacesBefore, 53 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 338 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 407 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 51, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 51, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.4ms, 56 PlacesBefore, 56 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 356 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 439 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 63, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 63, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.7ms, 57 PlacesBefore, 57 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 509 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 67, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 67, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.2ms, 58 PlacesBefore, 58 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 362 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 499 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 71, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 71, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 813.3ms, 61 PlacesBefore, 61 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 452 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 534 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 108, positive: 84, positive conditional: 0, positive unconditional: 84, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 108, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.0ms, 63 PlacesBefore, 63 PlacesAfterwards, 48 TransitionsBefore, 46 TransitionsAfterwards, 500 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 446 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.1ms, 57 PlacesBefore, 57 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 302 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 142 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4286.5ms, 63 PlacesBefore, 57 PlacesAfterwards, 39 TransitionsBefore, 34 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 263 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 86, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1483.4ms, 53 PlacesBefore, 47 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 4 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L715] 0 int a = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff0_thd3; [L728] 0 _Bool y$r_buff1_thd0; [L729] 0 _Bool y$r_buff1_thd1; [L730] 0 _Bool y$r_buff1_thd2; [L731] 0 _Bool y$r_buff1_thd3; [L732] 0 _Bool y$read_delayed; [L733] 0 int *y$read_delayed_var; [L734] 0 int y$w_buff0; [L735] 0 _Bool y$w_buff0_used; [L736] 0 int y$w_buff1; [L737] 0 _Bool y$w_buff1_used; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L823] 0 pthread_t t1214; [L824] FCALL, FORK 0 pthread_create(&t1214, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L825] 0 pthread_t t1215; [L826] FCALL, FORK 0 pthread_create(&t1215, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L827] 0 pthread_t t1216; [L828] FCALL, FORK 0 pthread_create(&t1216, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L780] 3 y$w_buff1 = y$w_buff0 [L781] 3 y$w_buff0 = 2 [L782] 3 y$w_buff1_used = y$w_buff0_used [L783] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L785] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L786] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L787] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L788] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L789] 3 y$r_buff0_thd3 = (_Bool)1 [L792] 3 z = 1 [L795] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L798] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L745] 1 a = 1 [L748] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L753] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L755] 1 return 0; [L760] 2 x = 2 [L763] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L766] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L766] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L767] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L767] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L768] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L769] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L770] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L773] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L775] 2 return 0; [L801] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L801] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L802] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L802] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L803] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L803] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L804] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L804] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L805] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L805] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L808] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L810] 3 return 0; [L830] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L834] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L834] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L834] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L834] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L835] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L835] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L836] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L836] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L837] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L837] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L838] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L838] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L841] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L842] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L843] 0 y$flush_delayed = weak$$choice2 [L844] 0 y$mem_tmp = y [L845] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L845] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L846] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L846] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L846] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L846] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L847] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L847] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L847] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L847] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L848] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L848] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L848] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L848] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L849] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L849] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L849] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L849] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L850] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L850] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L850] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L850] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L851] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L851] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L851] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L851] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L852] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L853] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L853] 0 y = y$flush_delayed ? y$mem_tmp : y [L854] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=53, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 99 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 21774.4ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1387.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7710.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 22 SDslu, 19 SDs, 0 SdLazy, 362 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 423.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 487.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=12, InterpolantAutomatonStates: 76, 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: 55.0ms SsaConstructionTime, 409.2ms SatisfiabilityAnalysisTime, 1169.2ms InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1266 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...