/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:40:55,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:40:55,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:40:55,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:40:55,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:40:55,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:40:55,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:40:55,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:40:55,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:40:55,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:40:55,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:40:55,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:40:55,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:40:55,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:40:55,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:40:55,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:40:55,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:40:55,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:40:55,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:40:55,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:40:55,653 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-SemanticLbe.epf [2021-03-24 19:40:55,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:40:55,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:40:55,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:40:55,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:40:55,691 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:40:55,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:40:55,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:40:55,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:40:55,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:40:55,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:40:55,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:40:55,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:40:55,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:40:55,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:40:55,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:40:55,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:40:55,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:40:55,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:40:55,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:40:55,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:40:55,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:40:55,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:40:55,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:40:55,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:40:55,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:40:55,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:40:55,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:40:55,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:40:55,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:40:56,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:40:56,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:40:56,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:40:56,027 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:40:56,028 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:40:56,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_tso.oepc.i [2021-03-24 19:40:56,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ef7bcf0/600f5ceb29be4b339e7c1e2cc55995ec/FLAG2dd04e821 [2021-03-24 19:40:56,547 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:40:56,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_tso.oepc.i [2021-03-24 19:40:56,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ef7bcf0/600f5ceb29be4b339e7c1e2cc55995ec/FLAG2dd04e821 [2021-03-24 19:40:56,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ef7bcf0/600f5ceb29be4b339e7c1e2cc55995ec [2021-03-24 19:40:56,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:40:56,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:40:56,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:40:56,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:40:56,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:40:56,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:40:56" (1/1) ... [2021-03-24 19:40:56,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6d5013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:56, skipping insertion in model container [2021-03-24 19:40:56,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:40:56" (1/1) ... [2021-03-24 19:40:56,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:40:56,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:40:56,791 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.oepc.i[949,962] [2021-03-24 19:40:57,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:40:57,034 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:40:57,043 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.oepc.i[949,962] [2021-03-24 19:40:57,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:40:57,147 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:40:57,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57 WrapperNode [2021-03-24 19:40:57,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:40:57,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:40:57,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:40:57,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:40:57,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:40:57,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:40:57,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:40:57,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:40:57,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (1/1) ... [2021-03-24 19:40:57,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:40:57,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:40:57,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:40:57,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:40:57,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (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 [2021-03-24 19:40:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:40:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:40:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:40:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:40:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:40:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:40:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:40:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:40:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:40:57,376 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:40:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:40:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:40:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:40:57,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:40:57,378 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:40:59,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:40:59,009 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 19:40:59,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:40:59 BoogieIcfgContainer [2021-03-24 19:40:59,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:40:59,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:40:59,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:40:59,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:40:59,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:40:56" (1/3) ... [2021-03-24 19:40:59,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28807d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:40:59, skipping insertion in model container [2021-03-24 19:40:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:40:57" (2/3) ... [2021-03-24 19:40:59,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28807d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:40:59, skipping insertion in model container [2021-03-24 19:40:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:40:59" (3/3) ... [2021-03-24 19:40:59,018 INFO L111 eAbstractionObserver]: Analyzing ICFG mix045_tso.oepc.i [2021-03-24 19:40:59,025 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:40:59,030 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 19:40:59,030 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:40:59,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:40:59,094 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:40:59,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 19:40:59,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:40:59,142 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:40:59,142 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:40:59,142 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:40:59,142 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:40:59,147 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:40:59,147 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:40:59,147 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:40:59,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 100 transitions, 215 flow [2021-03-24 19:40:59,190 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2021-03-24 19:40:59,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:40:59,194 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. [2021-03-24 19:40:59,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 100 transitions, 215 flow [2021-03-24 19:40:59,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 97 transitions, 203 flow [2021-03-24 19:40:59,199 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:40:59,210 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 97 transitions, 203 flow [2021-03-24 19:40:59,212 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 97 transitions, 203 flow [2021-03-24 19:40:59,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 97 transitions, 203 flow [2021-03-24 19:40:59,230 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2021-03-24 19:40:59,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:40:59,230 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. [2021-03-24 19:40:59,233 INFO L142 LiptonReduction]: Number of co-enabled transitions 1738 [2021-03-24 19:41:00,078 WARN L205 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 187 [2021-03-24 19:41:00,402 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-24 19:41:01,757 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 312 DAG size of output: 268 [2021-03-24 19:41:02,336 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-24 19:41:03,400 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 19:41:03,782 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 19:41:03,886 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 19:41:05,095 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-03-24 19:41:05,389 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-03-24 19:41:06,575 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 267 DAG size of output: 266 [2021-03-24 19:41:07,154 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-24 19:41:07,344 INFO L154 LiptonReduction]: Checked pairs total: 2726 [2021-03-24 19:41:07,344 INFO L156 LiptonReduction]: Total number of compositions: 67 [2021-03-24 19:41:07,346 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8148 [2021-03-24 19:41:07,355 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 19:41:07,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:41:07,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:07,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:07,356 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 429548733, now seen corresponding path program 1 times [2021-03-24 19:41:07,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:07,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859799419] [2021-03-24 19:41:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:07,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:07,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:07,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:07,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:07,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859799419] [2021-03-24 19:41:07,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:07,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:41:07,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487963997] [2021-03-24 19:41:07,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:41:07,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:41:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:41:07,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 167 [2021-03-24 19:41:07,619 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) [2021-03-24 19:41:07,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:07,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 167 [2021-03-24 19:41:07,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:07,683 INFO L129 PetriNetUnfolder]: 23/102 cut-off events. [2021-03-24 19:41:07,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:41:07,684 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. [2021-03-24 19:41:07,685 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 7 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2021-03-24 19:41:07,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 113 flow [2021-03-24 19:41:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:41:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:41:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2021-03-24 19:41:07,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8902195608782435 [2021-03-24 19:41:07,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2021-03-24 19:41:07,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2021-03-24 19:41:07,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:07,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2021-03-24 19:41:07,706 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) [2021-03-24 19:41:07,712 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) [2021-03-24 19:41:07,712 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) [2021-03-24 19:41:07,714 INFO L185 Difference]: Start difference. First operand has 49 places, 40 transitions, 89 flow. Second operand 3 states and 446 transitions. [2021-03-24 19:41:07,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 113 flow [2021-03-24 19:41:07,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:41:07,719 INFO L241 Difference]: Finished difference. Result has 46 places, 34 transitions, 78 flow [2021-03-24 19:41:07,721 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} [2021-03-24 19:41:07,722 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-03-24 19:41:07,722 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 78 flow [2021-03-24 19:41:07,722 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) [2021-03-24 19:41:07,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:07,723 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] [2021-03-24 19:41:07,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:41:07,723 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:07,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1980972199, now seen corresponding path program 1 times [2021-03-24 19:41:07,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:07,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140788380] [2021-03-24 19:41:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:07,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:07,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:07,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:07,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:07,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:07,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:07,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140788380] [2021-03-24 19:41:07,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:07,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:41:07,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007800890] [2021-03-24 19:41:07,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:41:07,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:41:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:41:07,831 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 167 [2021-03-24 19:41:07,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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) [2021-03-24 19:41:07,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:07,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 167 [2021-03-24 19:41:07,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:07,875 INFO L129 PetriNetUnfolder]: 6/60 cut-off events. [2021-03-24 19:41:07,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:41:07,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 60 events. 6/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 2 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 71. Up to 15 conditions per place. [2021-03-24 19:41:07,877 INFO L132 encePairwiseOnDemand]: 162/167 looper letters, 4 selfloop transitions, 3 changer transitions 5/41 dead transitions. [2021-03-24 19:41:07,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 116 flow [2021-03-24 19:41:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:41:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:41:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 744 transitions. [2021-03-24 19:41:07,882 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8910179640718563 [2021-03-24 19:41:07,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 744 transitions. [2021-03-24 19:41:07,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 744 transitions. [2021-03-24 19:41:07,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:07,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 744 transitions. [2021-03-24 19:41:07,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 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) [2021-03-24 19:41:07,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:07,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:07,894 INFO L185 Difference]: Start difference. First operand has 46 places, 34 transitions, 78 flow. Second operand 5 states and 744 transitions. [2021-03-24 19:41:07,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 116 flow [2021-03-24 19:41:07,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:41:07,896 INFO L241 Difference]: Finished difference. Result has 48 places, 36 transitions, 101 flow [2021-03-24 19:41:07,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2021-03-24 19:41:07,896 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2021-03-24 19:41:07,896 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 101 flow [2021-03-24 19:41:07,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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) [2021-03-24 19:41:07,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:07,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:07,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:41:07,897 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:07,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:07,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1682473423, now seen corresponding path program 1 times [2021-03-24 19:41:07,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:07,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854028096] [2021-03-24 19:41:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:08,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:08,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:08,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:08,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:08,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854028096] [2021-03-24 19:41:08,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:08,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:41:08,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986202124] [2021-03-24 19:41:08,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:41:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:41:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:41:08,022 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 167 [2021-03-24 19:41:08,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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) [2021-03-24 19:41:08,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:08,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 167 [2021-03-24 19:41:08,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:08,063 INFO L129 PetriNetUnfolder]: 7/66 cut-off events. [2021-03-24 19:41:08,063 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-24 19:41:08,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 66 events. 7/66 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs, 3 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 101. Up to 17 conditions per place. [2021-03-24 19:41:08,065 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 2 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2021-03-24 19:41:08,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 119 flow [2021-03-24 19:41:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:41:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:41:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2021-03-24 19:41:08,067 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8838323353293414 [2021-03-24 19:41:08,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2021-03-24 19:41:08,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2021-03-24 19:41:08,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:08,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2021-03-24 19:41:08,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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) [2021-03-24 19:41:08,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:08,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:08,072 INFO L185 Difference]: Start difference. First operand has 48 places, 36 transitions, 101 flow. Second operand 5 states and 738 transitions. [2021-03-24 19:41:08,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 119 flow [2021-03-24 19:41:08,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 114 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:41:08,074 INFO L241 Difference]: Finished difference. Result has 51 places, 36 transitions, 108 flow [2021-03-24 19:41:08,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2021-03-24 19:41:08,075 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2021-03-24 19:41:08,075 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 108 flow [2021-03-24 19:41:08,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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) [2021-03-24 19:41:08,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:08,075 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:08,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:41:08,076 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1949795495, now seen corresponding path program 1 times [2021-03-24 19:41:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:08,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660962224] [2021-03-24 19:41:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:08,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:08,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:08,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:08,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:08,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:08,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660962224] [2021-03-24 19:41:08,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:08,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:41:08,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581589792] [2021-03-24 19:41:08,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:41:08,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:41:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:41:08,253 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 167 [2021-03-24 19:41:08,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 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) [2021-03-24 19:41:08,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:08,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 167 [2021-03-24 19:41:08,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:08,384 INFO L129 PetriNetUnfolder]: 68/196 cut-off events. [2021-03-24 19:41:08,385 INFO L130 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2021-03-24 19:41:08,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 196 events. 68/196 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 915 event pairs, 29 based on Foata normal form. 13/193 useless extension candidates. Maximal degree in co-relation 410. Up to 98 conditions per place. [2021-03-24 19:41:08,388 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 9 selfloop transitions, 8 changer transitions 6/48 dead transitions. [2021-03-24 19:41:08,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 182 flow [2021-03-24 19:41:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:41:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:41:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1073 transitions. [2021-03-24 19:41:08,392 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8031437125748503 [2021-03-24 19:41:08,392 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1073 transitions. [2021-03-24 19:41:08,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1073 transitions. [2021-03-24 19:41:08,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:08,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1073 transitions. [2021-03-24 19:41:08,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.125) internal successors, (1073), 8 states have internal predecessors, (1073), 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) [2021-03-24 19:41:08,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:08,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:08,399 INFO L185 Difference]: Start difference. First operand has 51 places, 36 transitions, 108 flow. Second operand 8 states and 1073 transitions. [2021-03-24 19:41:08,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 182 flow [2021-03-24 19:41:08,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 174 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 19:41:08,403 INFO L241 Difference]: Finished difference. Result has 56 places, 40 transitions, 146 flow [2021-03-24 19:41:08,403 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2021-03-24 19:41:08,403 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2021-03-24 19:41:08,404 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 146 flow [2021-03-24 19:41:08,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 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) [2021-03-24 19:41:08,404 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:08,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:08,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:41:08,405 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash 276501573, now seen corresponding path program 1 times [2021-03-24 19:41:08,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:08,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122771350] [2021-03-24 19:41:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:08,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:08,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:08,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:08,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:08,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:08,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:08,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122771350] [2021-03-24 19:41:08,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:08,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:41:08,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376659626] [2021-03-24 19:41:08,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:41:08,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:08,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:41:08,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:41:08,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2021-03-24 19:41:08,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 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) [2021-03-24 19:41:08,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:08,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2021-03-24 19:41:08,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:08,661 INFO L129 PetriNetUnfolder]: 74/203 cut-off events. [2021-03-24 19:41:08,661 INFO L130 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2021-03-24 19:41:08,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 203 events. 74/203 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 892 event pairs, 10 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 523. Up to 97 conditions per place. [2021-03-24 19:41:08,664 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 11 selfloop transitions, 11 changer transitions 3/51 dead transitions. [2021-03-24 19:41:08,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 234 flow [2021-03-24 19:41:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:41:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:41:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 954 transitions. [2021-03-24 19:41:08,667 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8160821214713431 [2021-03-24 19:41:08,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 954 transitions. [2021-03-24 19:41:08,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 954 transitions. [2021-03-24 19:41:08,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:08,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 954 transitions. [2021-03-24 19:41:08,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 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) [2021-03-24 19:41:08,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 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) [2021-03-24 19:41:08,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 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) [2021-03-24 19:41:08,672 INFO L185 Difference]: Start difference. First operand has 56 places, 40 transitions, 146 flow. Second operand 7 states and 954 transitions. [2021-03-24 19:41:08,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 234 flow [2021-03-24 19:41:08,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 228 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 19:41:08,676 INFO L241 Difference]: Finished difference. Result has 60 places, 46 transitions, 202 flow [2021-03-24 19:41:08,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2021-03-24 19:41:08,677 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2021-03-24 19:41:08,677 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 202 flow [2021-03-24 19:41:08,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 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) [2021-03-24 19:41:08,678 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:08,678 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:08,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:41:08,678 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:08,678 INFO L82 PathProgramCache]: Analyzing trace with hash 15356571, now seen corresponding path program 2 times [2021-03-24 19:41:08,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:08,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738052934] [2021-03-24 19:41:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:08,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:08,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:08,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:41:08,804 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-24 19:41:08,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 19:41:08,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:08,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:08,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:08,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:08,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738052934] [2021-03-24 19:41:08,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:08,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:41:08,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937020579] [2021-03-24 19:41:08,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:41:08,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:41:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:41:08,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2021-03-24 19:41:08,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 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) [2021-03-24 19:41:08,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:08,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2021-03-24 19:41:08,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:08,991 INFO L129 PetriNetUnfolder]: 76/211 cut-off events. [2021-03-24 19:41:08,991 INFO L130 PetriNetUnfolder]: For 386/394 co-relation queries the response was YES. [2021-03-24 19:41:08,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 211 events. 76/211 cut-off events. For 386/394 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 8 based on Foata normal form. 10/213 useless extension candidates. Maximal degree in co-relation 702. Up to 99 conditions per place. [2021-03-24 19:41:08,994 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 13 selfloop transitions, 12 changer transitions 5/55 dead transitions. [2021-03-24 19:41:08,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 326 flow [2021-03-24 19:41:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:41:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:41:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1051 transitions. [2021-03-24 19:41:08,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7866766467065869 [2021-03-24 19:41:08,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1051 transitions. [2021-03-24 19:41:08,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1051 transitions. [2021-03-24 19:41:08,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:08,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1051 transitions. [2021-03-24 19:41:09,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 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) [2021-03-24 19:41:09,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:09,003 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:09,003 INFO L185 Difference]: Start difference. First operand has 60 places, 46 transitions, 202 flow. Second operand 8 states and 1051 transitions. [2021-03-24 19:41:09,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 326 flow [2021-03-24 19:41:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 310 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 19:41:09,007 INFO L241 Difference]: Finished difference. Result has 66 places, 48 transitions, 243 flow [2021-03-24 19:41:09,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2021-03-24 19:41:09,008 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2021-03-24 19:41:09,008 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 243 flow [2021-03-24 19:41:09,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 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) [2021-03-24 19:41:09,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:09,008 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:09,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:41:09,009 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1295869851, now seen corresponding path program 3 times [2021-03-24 19:41:09,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:09,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525753423] [2021-03-24 19:41:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:09,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:09,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:09,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:41:09,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:41:09,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:41:09,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:41:09,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:09,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:09,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525753423] [2021-03-24 19:41:09,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:09,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:41:09,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298279496] [2021-03-24 19:41:09,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:41:09,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:09,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:41:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:41:09,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2021-03-24 19:41:09,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 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) [2021-03-24 19:41:09,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:09,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2021-03-24 19:41:09,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:09,333 INFO L129 PetriNetUnfolder]: 83/221 cut-off events. [2021-03-24 19:41:09,333 INFO L130 PetriNetUnfolder]: For 806/835 co-relation queries the response was YES. [2021-03-24 19:41:09,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 221 events. 83/221 cut-off events. For 806/835 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1030 event pairs, 5 based on Foata normal form. 19/231 useless extension candidates. Maximal degree in co-relation 913. Up to 101 conditions per place. [2021-03-24 19:41:09,336 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 14 selfloop transitions, 14 changer transitions 5/59 dead transitions. [2021-03-24 19:41:09,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 415 flow [2021-03-24 19:41:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:41:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:41:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1225 transitions. [2021-03-24 19:41:09,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8150365934797072 [2021-03-24 19:41:09,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1225 transitions. [2021-03-24 19:41:09,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1225 transitions. [2021-03-24 19:41:09,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:09,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1225 transitions. [2021-03-24 19:41:09,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.11111111111111) internal successors, (1225), 9 states have internal predecessors, (1225), 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) [2021-03-24 19:41:09,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:09,346 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:09,346 INFO L185 Difference]: Start difference. First operand has 66 places, 48 transitions, 243 flow. Second operand 9 states and 1225 transitions. [2021-03-24 19:41:09,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 415 flow [2021-03-24 19:41:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 59 transitions, 388 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 19:41:09,352 INFO L241 Difference]: Finished difference. Result has 70 places, 50 transitions, 288 flow [2021-03-24 19:41:09,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2021-03-24 19:41:09,353 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2021-03-24 19:41:09,353 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 288 flow [2021-03-24 19:41:09,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 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) [2021-03-24 19:41:09,354 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:09,354 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:09,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:41:09,355 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1671840393, now seen corresponding path program 4 times [2021-03-24 19:41:09,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:09,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882535886] [2021-03-24 19:41:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:09,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:09,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:09,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:41:09,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:41:09,506 INFO L142 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-03-24 19:41:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 19:41:09,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:09,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:09,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882535886] [2021-03-24 19:41:09,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:09,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:41:09,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591317887] [2021-03-24 19:41:09,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:41:09,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:41:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:41:09,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 167 [2021-03-24 19:41:09,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 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) [2021-03-24 19:41:09,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:09,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 167 [2021-03-24 19:41:09,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:09,722 INFO L129 PetriNetUnfolder]: 83/238 cut-off events. [2021-03-24 19:41:09,723 INFO L130 PetriNetUnfolder]: For 1441/1488 co-relation queries the response was YES. [2021-03-24 19:41:09,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 238 events. 83/238 cut-off events. For 1441/1488 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1188 event pairs, 4 based on Foata normal form. 21/251 useless extension candidates. Maximal degree in co-relation 1125. Up to 107 conditions per place. [2021-03-24 19:41:09,725 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 20 selfloop transitions, 12 changer transitions 6/64 dead transitions. [2021-03-24 19:41:09,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 550 flow [2021-03-24 19:41:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:41:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:41:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2021-03-24 19:41:09,729 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8143712574850299 [2021-03-24 19:41:09,729 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2021-03-24 19:41:09,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2021-03-24 19:41:09,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:09,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2021-03-24 19:41:09,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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) [2021-03-24 19:41:09,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:09,735 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:09,735 INFO L185 Difference]: Start difference. First operand has 70 places, 50 transitions, 288 flow. Second operand 9 states and 1224 transitions. [2021-03-24 19:41:09,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 550 flow [2021-03-24 19:41:09,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 442 flow, removed 41 selfloop flow, removed 9 redundant places. [2021-03-24 19:41:09,739 INFO L241 Difference]: Finished difference. Result has 71 places, 55 transitions, 330 flow [2021-03-24 19:41:09,739 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2021-03-24 19:41:09,740 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2021-03-24 19:41:09,740 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 330 flow [2021-03-24 19:41:09,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 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) [2021-03-24 19:41:09,740 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:09,740 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:09,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:41:09,741 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash -18407176, now seen corresponding path program 1 times [2021-03-24 19:41:09,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:09,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815340292] [2021-03-24 19:41:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:09,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:09,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:09,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:09,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:09,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:09,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:41:09,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:09,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:41:09,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:09,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:09,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815340292] [2021-03-24 19:41:09,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:09,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:41:09,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085823217] [2021-03-24 19:41:09,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:41:09,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:09,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:41:09,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:41:09,864 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2021-03-24 19:41:09,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 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) [2021-03-24 19:41:09,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:09,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2021-03-24 19:41:09,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:09,990 INFO L129 PetriNetUnfolder]: 76/229 cut-off events. [2021-03-24 19:41:09,990 INFO L130 PetriNetUnfolder]: For 1029/1090 co-relation queries the response was YES. [2021-03-24 19:41:09,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 229 events. 76/229 cut-off events. For 1029/1090 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1165 event pairs, 12 based on Foata normal form. 20/240 useless extension candidates. Maximal degree in co-relation 1011. Up to 111 conditions per place. [2021-03-24 19:41:09,993 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 19 selfloop transitions, 14 changer transitions 2/60 dead transitions. [2021-03-24 19:41:09,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 60 transitions, 458 flow [2021-03-24 19:41:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:41:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:41:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1079 transitions. [2021-03-24 19:41:09,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8076347305389222 [2021-03-24 19:41:09,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1079 transitions. [2021-03-24 19:41:09,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1079 transitions. [2021-03-24 19:41:09,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:09,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1079 transitions. [2021-03-24 19:41:09,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.875) internal successors, (1079), 8 states have internal predecessors, (1079), 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) [2021-03-24 19:41:10,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:10,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 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) [2021-03-24 19:41:10,000 INFO L185 Difference]: Start difference. First operand has 71 places, 55 transitions, 330 flow. Second operand 8 states and 1079 transitions. [2021-03-24 19:41:10,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 60 transitions, 458 flow [2021-03-24 19:41:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 409 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 19:41:10,006 INFO L241 Difference]: Finished difference. Result has 74 places, 56 transitions, 339 flow [2021-03-24 19:41:10,006 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2021-03-24 19:41:10,006 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2021-03-24 19:41:10,006 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 339 flow [2021-03-24 19:41:10,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 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) [2021-03-24 19:41:10,007 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:10,007 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:10,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:41:10,007 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1386431906, now seen corresponding path program 2 times [2021-03-24 19:41:10,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:10,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375714776] [2021-03-24 19:41:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:10,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:10,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:10,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:10,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:41:10,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 19:41:10,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 19:41:10,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 19:41:10,146 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-03-24 19:41:10,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-24 19:41:10,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:10,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:10,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375714776] [2021-03-24 19:41:10,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:10,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 19:41:10,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510455653] [2021-03-24 19:41:10,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 19:41:10,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 19:41:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-24 19:41:10,181 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 167 [2021-03-24 19:41:10,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 339 flow. Second operand has 10 states, 10 states have (on average 124.2) internal successors, (1242), 10 states have internal predecessors, (1242), 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) [2021-03-24 19:41:10,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:10,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 167 [2021-03-24 19:41:10,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:10,375 INFO L129 PetriNetUnfolder]: 77/225 cut-off events. [2021-03-24 19:41:10,375 INFO L130 PetriNetUnfolder]: For 1085/1144 co-relation queries the response was YES. [2021-03-24 19:41:10,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 225 events. 77/225 cut-off events. For 1085/1144 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1126 event pairs, 7 based on Foata normal form. 14/230 useless extension candidates. Maximal degree in co-relation 1031. Up to 106 conditions per place. [2021-03-24 19:41:10,378 INFO L132 encePairwiseOnDemand]: 157/167 looper letters, 24 selfloop transitions, 14 changer transitions 2/63 dead transitions. [2021-03-24 19:41:10,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 63 transitions, 507 flow [2021-03-24 19:41:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:41:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:41:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1258 transitions. [2021-03-24 19:41:10,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7532934131736527 [2021-03-24 19:41:10,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1258 transitions. [2021-03-24 19:41:10,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1258 transitions. [2021-03-24 19:41:10,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:10,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1258 transitions. [2021-03-24 19:41:10,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.8) internal successors, (1258), 10 states have internal predecessors, (1258), 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) [2021-03-24 19:41:10,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 167.0) internal successors, (1837), 11 states have internal predecessors, (1837), 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) [2021-03-24 19:41:10,387 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 167.0) internal successors, (1837), 11 states have internal predecessors, (1837), 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) [2021-03-24 19:41:10,387 INFO L185 Difference]: Start difference. First operand has 74 places, 56 transitions, 339 flow. Second operand 10 states and 1258 transitions. [2021-03-24 19:41:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 63 transitions, 507 flow [2021-03-24 19:41:10,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 467 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 19:41:10,393 INFO L241 Difference]: Finished difference. Result has 78 places, 57 transitions, 362 flow [2021-03-24 19:41:10,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2021-03-24 19:41:10,394 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 29 predicate places. [2021-03-24 19:41:10,394 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 362 flow [2021-03-24 19:41:10,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 124.2) internal successors, (1242), 10 states have internal predecessors, (1242), 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) [2021-03-24 19:41:10,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:10,394 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:10,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:41:10,395 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:10,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1629256958, now seen corresponding path program 3 times [2021-03-24 19:41:10,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:10,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532008412] [2021-03-24 19:41:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:10,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:10,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:10,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:41:10,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:41:10,491 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-03-24 19:41:10,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-24 19:41:10,515 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-03-24 19:41:10,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-24 19:41:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 19:41:10,561 INFO L142 QuantifierPusher]: treesize reduction 69, result has 34.9 percent of original size [2021-03-24 19:41:10,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 19:41:10,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:10,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:10,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532008412] [2021-03-24 19:41:10,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:10,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 19:41:10,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936286384] [2021-03-24 19:41:10,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 19:41:10,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 19:41:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-24 19:41:10,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 167 [2021-03-24 19:41:10,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 362 flow. Second operand has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 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) [2021-03-24 19:41:10,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:10,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 167 [2021-03-24 19:41:10,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:10,774 INFO L129 PetriNetUnfolder]: 67/238 cut-off events. [2021-03-24 19:41:10,774 INFO L130 PetriNetUnfolder]: For 1222/1283 co-relation queries the response was YES. [2021-03-24 19:41:10,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 238 events. 67/238 cut-off events. For 1222/1283 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1298 event pairs, 4 based on Foata normal form. 21/251 useless extension candidates. Maximal degree in co-relation 1026. Up to 84 conditions per place. [2021-03-24 19:41:10,777 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 26 selfloop transitions, 11 changer transitions 2/63 dead transitions. [2021-03-24 19:41:10,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 63 transitions, 518 flow [2021-03-24 19:41:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:41:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:41:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1157 transitions. [2021-03-24 19:41:10,780 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7697937458416501 [2021-03-24 19:41:10,780 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1157 transitions. [2021-03-24 19:41:10,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1157 transitions. [2021-03-24 19:41:10,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:10,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1157 transitions. [2021-03-24 19:41:10,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.55555555555554) internal successors, (1157), 9 states have internal predecessors, (1157), 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) [2021-03-24 19:41:10,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:10,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:10,785 INFO L185 Difference]: Start difference. First operand has 78 places, 57 transitions, 362 flow. Second operand 9 states and 1157 transitions. [2021-03-24 19:41:10,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 63 transitions, 518 flow [2021-03-24 19:41:10,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 63 transitions, 471 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-03-24 19:41:10,791 INFO L241 Difference]: Finished difference. Result has 79 places, 57 transitions, 358 flow [2021-03-24 19:41:10,791 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=358, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2021-03-24 19:41:10,791 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 30 predicate places. [2021-03-24 19:41:10,791 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 358 flow [2021-03-24 19:41:10,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 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) [2021-03-24 19:41:10,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:10,792 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:10,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:41:10,792 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:10,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1596880686, now seen corresponding path program 1 times [2021-03-24 19:41:10,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:10,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173183840] [2021-03-24 19:41:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:10,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:10,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:10,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:10,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:10,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:10,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173183840] [2021-03-24 19:41:10,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:10,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:41:10,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721663672] [2021-03-24 19:41:10,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:41:10,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:10,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:41:10,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:41:10,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 167 [2021-03-24 19:41:10,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2021-03-24 19:41:10,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:10,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 167 [2021-03-24 19:41:10,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:10,967 INFO L129 PetriNetUnfolder]: 204/484 cut-off events. [2021-03-24 19:41:10,967 INFO L130 PetriNetUnfolder]: For 1690/1940 co-relation queries the response was YES. [2021-03-24 19:41:10,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 484 events. 204/484 cut-off events. For 1690/1940 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 2968 event pairs, 74 based on Foata normal form. 96/492 useless extension candidates. Maximal degree in co-relation 1582. Up to 253 conditions per place. [2021-03-24 19:41:10,972 INFO L132 encePairwiseOnDemand]: 161/167 looper letters, 13 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2021-03-24 19:41:10,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 422 flow [2021-03-24 19:41:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:41:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:41:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2021-03-24 19:41:10,974 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2021-03-24 19:41:10,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 715 transitions. [2021-03-24 19:41:10,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 715 transitions. [2021-03-24 19:41:10,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:10,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 715 transitions. [2021-03-24 19:41:10,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2021-03-24 19:41:10,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:10,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:10,977 INFO L185 Difference]: Start difference. First operand has 79 places, 57 transitions, 358 flow. Second operand 5 states and 715 transitions. [2021-03-24 19:41:10,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 422 flow [2021-03-24 19:41:10,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 403 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 19:41:10,982 INFO L241 Difference]: Finished difference. Result has 78 places, 64 transitions, 411 flow [2021-03-24 19:41:10,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2021-03-24 19:41:10,982 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 29 predicate places. [2021-03-24 19:41:10,982 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 411 flow [2021-03-24 19:41:10,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2021-03-24 19:41:10,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:10,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:10,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 19:41:10,995 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash 204426109, now seen corresponding path program 1 times [2021-03-24 19:41:10,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:10,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047233513] [2021-03-24 19:41:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:11,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047233513] [2021-03-24 19:41:11,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:11,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:41:11,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419196462] [2021-03-24 19:41:11,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:41:11,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:11,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:41:11,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:41:11,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 167 [2021-03-24 19:41:11,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:41:11,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:11,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 167 [2021-03-24 19:41:11,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:11,137 INFO L129 PetriNetUnfolder]: 121/334 cut-off events. [2021-03-24 19:41:11,137 INFO L130 PetriNetUnfolder]: For 1755/3058 co-relation queries the response was YES. [2021-03-24 19:41:11,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 334 events. 121/334 cut-off events. For 1755/3058 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1864 event pairs, 9 based on Foata normal form. 198/487 useless extension candidates. Maximal degree in co-relation 1279. Up to 182 conditions per place. [2021-03-24 19:41:11,140 INFO L132 encePairwiseOnDemand]: 161/167 looper letters, 8 selfloop transitions, 15 changer transitions 5/69 dead transitions. [2021-03-24 19:41:11,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 69 transitions, 462 flow [2021-03-24 19:41:11,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:41:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:41:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1001 transitions. [2021-03-24 19:41:11,143 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2021-03-24 19:41:11,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1001 transitions. [2021-03-24 19:41:11,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1001 transitions. [2021-03-24 19:41:11,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:11,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1001 transitions. [2021-03-24 19:41:11,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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) [2021-03-24 19:41:11,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 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) [2021-03-24 19:41:11,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 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) [2021-03-24 19:41:11,148 INFO L185 Difference]: Start difference. First operand has 78 places, 64 transitions, 411 flow. Second operand 7 states and 1001 transitions. [2021-03-24 19:41:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 69 transitions, 462 flow [2021-03-24 19:41:11,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 69 transitions, 435 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-03-24 19:41:11,152 INFO L241 Difference]: Finished difference. Result has 81 places, 62 transitions, 403 flow [2021-03-24 19:41:11,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2021-03-24 19:41:11,152 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2021-03-24 19:41:11,153 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 403 flow [2021-03-24 19:41:11,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:41:11,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:11,153 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:11,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 19:41:11,153 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:11,153 INFO L82 PathProgramCache]: Analyzing trace with hash 507638779, now seen corresponding path program 1 times [2021-03-24 19:41:11,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:11,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751269296] [2021-03-24 19:41:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:11,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:11,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:11,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751269296] [2021-03-24 19:41:11,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:11,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:41:11,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025253363] [2021-03-24 19:41:11,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:41:11,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:41:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:41:11,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 167 [2021-03-24 19:41:11,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2021-03-24 19:41:11,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:11,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 167 [2021-03-24 19:41:11,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:11,300 INFO L129 PetriNetUnfolder]: 154/466 cut-off events. [2021-03-24 19:41:11,300 INFO L130 PetriNetUnfolder]: For 2450/3012 co-relation queries the response was YES. [2021-03-24 19:41:11,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 466 events. 154/466 cut-off events. For 2450/3012 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3151 event pairs, 16 based on Foata normal form. 34/463 useless extension candidates. Maximal degree in co-relation 2107. Up to 265 conditions per place. [2021-03-24 19:41:11,304 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 6 selfloop transitions, 1 changer transitions 2/66 dead transitions. [2021-03-24 19:41:11,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 465 flow [2021-03-24 19:41:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:41:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:41:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions. [2021-03-24 19:41:11,306 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8802395209580839 [2021-03-24 19:41:11,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 735 transitions. [2021-03-24 19:41:11,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions. [2021-03-24 19:41:11,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:11,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions. [2021-03-24 19:41:11,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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) [2021-03-24 19:41:11,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:11,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:11,310 INFO L185 Difference]: Start difference. First operand has 81 places, 62 transitions, 403 flow. Second operand 5 states and 735 transitions. [2021-03-24 19:41:11,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 465 flow [2021-03-24 19:41:11,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 66 transitions, 422 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-24 19:41:11,320 INFO L241 Difference]: Finished difference. Result has 84 places, 62 transitions, 373 flow [2021-03-24 19:41:11,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2021-03-24 19:41:11,320 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2021-03-24 19:41:11,320 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 373 flow [2021-03-24 19:41:11,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2021-03-24 19:41:11,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:11,321 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:11,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 19:41:11,321 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:11,321 INFO L82 PathProgramCache]: Analyzing trace with hash -288067539, now seen corresponding path program 2 times [2021-03-24 19:41:11,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:11,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777661140] [2021-03-24 19:41:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:11,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:41:11,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:41:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:11,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777661140] [2021-03-24 19:41:11,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:11,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:41:11,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833859619] [2021-03-24 19:41:11,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:41:11,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:11,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:41:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:41:11,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 167 [2021-03-24 19:41:11,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-24 19:41:11,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:11,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 167 [2021-03-24 19:41:11,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:11,434 INFO L129 PetriNetUnfolder]: 116/403 cut-off events. [2021-03-24 19:41:11,435 INFO L130 PetriNetUnfolder]: For 1593/1657 co-relation queries the response was YES. [2021-03-24 19:41:11,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 403 events. 116/403 cut-off events. For 1593/1657 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2734 event pairs, 13 based on Foata normal form. 27/398 useless extension candidates. Maximal degree in co-relation 1547. Up to 119 conditions per place. [2021-03-24 19:41:11,438 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 5 selfloop transitions, 3 changer transitions 2/65 dead transitions. [2021-03-24 19:41:11,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 65 transitions, 425 flow [2021-03-24 19:41:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:41:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:41:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2021-03-24 19:41:11,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8874251497005988 [2021-03-24 19:41:11,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2021-03-24 19:41:11,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2021-03-24 19:41:11,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:11,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2021-03-24 19:41:11,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 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) [2021-03-24 19:41:11,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:11,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-03-24 19:41:11,444 INFO L185 Difference]: Start difference. First operand has 84 places, 62 transitions, 373 flow. Second operand 5 states and 741 transitions. [2021-03-24 19:41:11,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 65 transitions, 425 flow [2021-03-24 19:41:11,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 65 transitions, 412 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 19:41:11,452 INFO L241 Difference]: Finished difference. Result has 86 places, 62 transitions, 381 flow [2021-03-24 19:41:11,452 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=86, PETRI_TRANSITIONS=62} [2021-03-24 19:41:11,452 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 37 predicate places. [2021-03-24 19:41:11,452 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 62 transitions, 381 flow [2021-03-24 19:41:11,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-24 19:41:11,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:11,453 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:11,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 19:41:11,453 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash -340146829, now seen corresponding path program 1 times [2021-03-24 19:41:11,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:11,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855359887] [2021-03-24 19:41:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:41:11,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:41:11,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:41:11,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:41:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:41:11,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855359887] [2021-03-24 19:41:11,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:41:11,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:41:11,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602042591] [2021-03-24 19:41:11,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:41:11,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:41:11,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:41:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:41:11,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 167 [2021-03-24 19:41:11,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 62 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 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) [2021-03-24 19:41:11,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:41:11,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 167 [2021-03-24 19:41:11,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:41:11,635 INFO L129 PetriNetUnfolder]: 163/441 cut-off events. [2021-03-24 19:41:11,635 INFO L130 PetriNetUnfolder]: For 1892/2743 co-relation queries the response was YES. [2021-03-24 19:41:11,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 441 events. 163/441 cut-off events. For 1892/2743 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 2897 event pairs, 0 based on Foata normal form. 243/620 useless extension candidates. Maximal degree in co-relation 1689. Up to 135 conditions per place. [2021-03-24 19:41:11,639 INFO L132 encePairwiseOnDemand]: 161/167 looper letters, 5 selfloop transitions, 17 changer transitions 16/69 dead transitions. [2021-03-24 19:41:11,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 69 transitions, 473 flow [2021-03-24 19:41:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:41:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:41:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1281 transitions. [2021-03-24 19:41:11,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8522954091816367 [2021-03-24 19:41:11,643 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1281 transitions. [2021-03-24 19:41:11,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1281 transitions. [2021-03-24 19:41:11,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:41:11,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1281 transitions. [2021-03-24 19:41:11,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.33333333333334) internal successors, (1281), 9 states have internal predecessors, (1281), 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) [2021-03-24 19:41:11,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:11,648 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 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) [2021-03-24 19:41:11,648 INFO L185 Difference]: Start difference. First operand has 86 places, 62 transitions, 381 flow. Second operand 9 states and 1281 transitions. [2021-03-24 19:41:11,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 69 transitions, 473 flow [2021-03-24 19:41:11,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 435 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 19:41:11,654 INFO L241 Difference]: Finished difference. Result has 89 places, 51 transitions, 320 flow [2021-03-24 19:41:11,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=89, PETRI_TRANSITIONS=51} [2021-03-24 19:41:11,654 INFO L343 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2021-03-24 19:41:11,654 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 51 transitions, 320 flow [2021-03-24 19:41:11,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 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) [2021-03-24 19:41:11,654 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:41:11,654 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:41:11,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 19:41:11,655 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:41:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:41:11,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1746421414, now seen corresponding path program 1 times [2021-03-24 19:41:11,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:41:11,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886373832] [2021-03-24 19:41:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:41:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:41:11,687 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:41:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:41:11,729 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:41:11,766 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 19:41:11,766 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 19:41:11,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 19:41:11,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:41:11 BasicIcfg [2021-03-24 19:41:11,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:41:11,862 INFO L168 Benchmark]: Toolchain (without parser) took 15280.32 ms. Allocated memory was 255.9 MB in the beginning and 551.6 MB in the end (delta: 295.7 MB). Free memory was 234.9 MB in the beginning and 225.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 305.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,862 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 165.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:41:11,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.60 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.9 MB in the beginning and 326.4 MB in the end (delta: -91.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.87 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 323.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,862 INFO L168 Benchmark]: Boogie Preprocessor took 52.78 ms. Allocated memory is still 367.0 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,863 INFO L168 Benchmark]: RCFGBuilder took 1727.67 ms. Allocated memory is still 367.0 MB. Free memory was 321.6 MB in the beginning and 255.9 MB in the end (delta: 65.7 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,863 INFO L168 Benchmark]: TraceAbstraction took 12848.82 ms. Allocated memory was 367.0 MB in the beginning and 551.6 MB in the end (delta: 184.5 MB). Free memory was 255.9 MB in the beginning and 225.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 215.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:41:11,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 165.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 565.60 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.9 MB in the beginning and 326.4 MB in the end (delta: -91.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 80.87 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 323.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 52.78 ms. Allocated memory is still 367.0 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1727.67 ms. Allocated memory is still 367.0 MB. Free memory was 321.6 MB in the beginning and 255.9 MB in the end (delta: 65.7 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12848.82 ms. Allocated memory was 367.0 MB in the beginning and 551.6 MB in the end (delta: 184.5 MB). Free memory was 255.9 MB in the beginning and 225.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 215.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8132.6ms, 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: 1601, positive: 1527, positive conditional: 0, positive unconditional: 1527, 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: 1156, positive: 1121, positive conditional: 0, positive unconditional: 1121, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1156, positive: 1121, positive conditional: 0, positive unconditional: 1121, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1156, positive: 1115, positive conditional: 0, positive unconditional: 1115, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 521, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 504, negative conditional: 0, negative unconditional: 504, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1601, positive: 406, positive conditional: 0, positive unconditional: 406, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 1156, unknown conditional: 0, unknown unconditional: 1156] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - 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; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0] [L713] 0 int __unbuffered_p2_EBX = 0; [L715] 0 int a = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0] [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff0_thd3; [L728] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=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$r_buff1_thd0=0] [L729] 0 _Bool y$r_buff1_thd1; [L730] 0 _Bool y$r_buff1_thd2; [L731] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=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] [L732] 0 _Bool y$read_delayed; [L733] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=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}] [L734] 0 int y$w_buff0; [L735] 0 _Bool y$w_buff0_used; [L736] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$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] [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 t1211; [L824] FCALL, FORK 0 pthread_create(&t1211, ((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 t1212; [L826] FCALL, FORK 0 pthread_create(&t1212, ((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 t1213; [L828] FCALL, FORK 0 pthread_create(&t1213, ((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$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, main$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=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=0] [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 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=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] [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] [L760] 2 x = 2 VAL [__unbuffered_cnt=0, __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=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] [L763] 2 y = 1 VAL [__unbuffered_cnt=0, __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$r_buff1_thd2 [L753] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L755] 1 return 0; [L773] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L775] 2 return 0; [L801] EXPR 3 y$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$w_buff0)) [L846] 0 y$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$w_buff1)) [L847] 0 y$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] 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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L849] 0 y$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] 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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L851] 0 y$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=49, weak$$choice2=255, 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: 4.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 12632.7ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2159.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8203.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 126 SDslu, 133 SDs, 0 SdLazy, 571 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 631.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 833.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=12, InterpolantAutomatonStates: 112, 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: 58.1ms SsaConstructionTime, 471.2ms SatisfiabilityAnalysisTime, 1364.2ms InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 2017 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...