/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/safe017_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:53:39,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:53:39,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:53:39,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:53:39,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:53:39,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:53:39,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:53:39,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:53:39,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:53:39,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:53:39,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:53:39,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:53:39,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:53:39,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:53:39,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:53:39,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:53:39,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:53:39,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:53:39,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:53:39,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:53:39,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:53:39,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:53:39,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:53:39,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:53:39,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:53:39,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:53:39,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:53:39,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:53:39,585 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 19:53:39,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:53:39,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:53:39,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:53:39,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:53:39,625 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:53:39,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:53:39,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:53:39,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:53:39,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:53:39,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:53:39,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:53:39,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:53:39,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:53:39,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:53:39,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:53:39,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:53:39,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:53:39,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:53:39,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:53:39,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:53:39,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:53:39,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:53:39,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:53:39,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:53:39,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:53:39,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:53:39,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:53:39,957 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:53:39,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_rmo.opt.i [2021-03-24 19:53:40,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468dc3368/f20feb49d6d3483d8a927ccbab057759/FLAG817af2c44 [2021-03-24 19:53:40,810 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:53:40,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_rmo.opt.i [2021-03-24 19:53:40,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468dc3368/f20feb49d6d3483d8a927ccbab057759/FLAG817af2c44 [2021-03-24 19:53:41,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468dc3368/f20feb49d6d3483d8a927ccbab057759 [2021-03-24 19:53:41,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:53:41,033 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:53:41,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:53:41,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:53:41,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:53:41,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d59082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41, skipping insertion in model container [2021-03-24 19:53:41,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:53:41,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:53:41,207 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/safe017_rmo.opt.i[949,962] [2021-03-24 19:53:41,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:53:41,421 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:53:41,441 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/safe017_rmo.opt.i[949,962] [2021-03-24 19:53:41,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:53:41,571 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:53:41,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41 WrapperNode [2021-03-24 19:53:41,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:53:41,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:53:41,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:53:41,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:53:41,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:53:41,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:53:41,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:53:41,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:53:41,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (1/1) ... [2021-03-24 19:53:41,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:53:41,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:53:41,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:53:41,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:53:41,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (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 19:53:41,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:53:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:53:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:53:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:53:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:53:41,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:53:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:53:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:53:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:53:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:53:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:53:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:53:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:53:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:53:41,786 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 19:53:43,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:53:43,614 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 19:53:43,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:53:43 BoogieIcfgContainer [2021-03-24 19:53:43,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:53:43,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:53:43,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:53:43,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:53:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:53:41" (1/3) ... [2021-03-24 19:53:43,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9483d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:53:43, skipping insertion in model container [2021-03-24 19:53:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:41" (2/3) ... [2021-03-24 19:53:43,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9483d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:53:43, skipping insertion in model container [2021-03-24 19:53:43,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:53:43" (3/3) ... [2021-03-24 19:53:43,623 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_rmo.opt.i [2021-03-24 19:53:43,628 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:53:43,633 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 19:53:43,634 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:53:43,668 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,684 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,684 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,687 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:43,702 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:53:43,717 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 19:53:43,748 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:53:43,748 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:53:43,748 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:53:43,748 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:53:43,748 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:53:43,748 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:53:43,748 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:53:43,748 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:53:43,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2021-03-24 19:53:43,792 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-03-24 19:53:43,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:43,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 19:53:43,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2021-03-24 19:53:43,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 92 transitions, 193 flow [2021-03-24 19:53:43,800 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:53:43,811 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 92 transitions, 193 flow [2021-03-24 19:53:43,814 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 92 transitions, 193 flow [2021-03-24 19:53:43,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 193 flow [2021-03-24 19:53:43,830 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-03-24 19:53:43,830 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:43,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 19:53:43,833 INFO L142 LiptonReduction]: Number of co-enabled transitions 1602 [2021-03-24 19:53:45,515 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 185 [2021-03-24 19:53:45,811 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-24 19:53:47,158 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 310 DAG size of output: 265 [2021-03-24 19:53:47,780 WARN L205 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 19:53:48,051 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 19:53:48,406 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 19:53:48,537 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 19:53:49,590 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-24 19:53:49,914 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-24 19:53:50,572 WARN L205 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:53:51,181 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:53:51,473 INFO L154 LiptonReduction]: Checked pairs total: 2709 [2021-03-24 19:53:51,473 INFO L156 LiptonReduction]: Total number of compositions: 66 [2021-03-24 19:53:51,476 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7677 [2021-03-24 19:53:51,485 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-24 19:53:51,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:51,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:51,486 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:51,486 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1950849355, now seen corresponding path program 1 times [2021-03-24 19:53:51,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:51,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210968942] [2021-03-24 19:53:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:51,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:51,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:51,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:51,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:51,670 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 19:53:51,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210968942] [2021-03-24 19:53:51,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:51,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:53:51,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331582206] [2021-03-24 19:53:51,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:53:51,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:51,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:53:51,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:53:51,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 161 [2021-03-24 19:53:51,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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 19:53:51,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:51,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 161 [2021-03-24 19:53:51,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:51,831 INFO L129 PetriNetUnfolder]: 69/176 cut-off events. [2021-03-24 19:53:51,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:51,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 176 events. 69/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 797 event pairs, 54 based on Foata normal form. 9/164 useless extension candidates. Maximal degree in co-relation 284. Up to 89 conditions per place. [2021-03-24 19:53:51,835 INFO L132 encePairwiseOnDemand]: 157/161 looper letters, 9 selfloop transitions, 2 changer transitions 3/39 dead transitions. [2021-03-24 19:53:51,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 113 flow [2021-03-24 19:53:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:53:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:53:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2021-03-24 19:53:51,857 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-03-24 19:53:51,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2021-03-24 19:53:51,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2021-03-24 19:53:51,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:51,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2021-03-24 19:53:51,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 19:53:51,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 19:53:51,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 19:53:51,888 INFO L185 Difference]: Start difference. First operand has 46 places, 37 transitions, 83 flow. Second operand 3 states and 427 transitions. [2021-03-24 19:53:51,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 113 flow [2021-03-24 19:53:51,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:53:51,892 INFO L241 Difference]: Finished difference. Result has 43 places, 32 transitions, 74 flow [2021-03-24 19:53:51,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2021-03-24 19:53:51,894 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2021-03-24 19:53:51,894 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 74 flow [2021-03-24 19:53:51,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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 19:53:51,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:51,895 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:51,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:53:51,895 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:51,901 INFO L82 PathProgramCache]: Analyzing trace with hash 344608737, now seen corresponding path program 1 times [2021-03-24 19:53:51,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:51,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623237847] [2021-03-24 19:53:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:52,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:52,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:52,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:52,038 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 19:53:52,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623237847] [2021-03-24 19:53:52,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:52,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:53:52,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108174246] [2021-03-24 19:53:52,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:52,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:52,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:52,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:52,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 161 [2021-03-24 19:53:52,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 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 19:53:52,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:52,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 161 [2021-03-24 19:53:52,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:52,081 INFO L129 PetriNetUnfolder]: 25/101 cut-off events. [2021-03-24 19:53:52,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:52,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 101 events. 25/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 354 event pairs, 4 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 146. Up to 38 conditions per place. [2021-03-24 19:53:52,082 INFO L132 encePairwiseOnDemand]: 156/161 looper letters, 6 selfloop transitions, 3 changer transitions 7/42 dead transitions. [2021-03-24 19:53:52,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 126 flow [2021-03-24 19:53:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2021-03-24 19:53:52,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8732919254658386 [2021-03-24 19:53:52,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2021-03-24 19:53:52,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2021-03-24 19:53:52,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:52,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2021-03-24 19:53:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 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 19:53:52,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,090 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 74 flow. Second operand 5 states and 703 transitions. [2021-03-24 19:53:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 126 flow [2021-03-24 19:53:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:53:52,091 INFO L241 Difference]: Finished difference. Result has 46 places, 34 transitions, 97 flow [2021-03-24 19:53:52,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2021-03-24 19:53:52,092 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2021-03-24 19:53:52,092 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 97 flow [2021-03-24 19:53:52,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 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 19:53:52,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:52,092 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 19:53:52,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:53:52,093 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2092915886, now seen corresponding path program 1 times [2021-03-24 19:53:52,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:52,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027021597] [2021-03-24 19:53:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:52,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:52,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:52,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:52,154 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 19:53:52,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027021597] [2021-03-24 19:53:52,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:52,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:53:52,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316817821] [2021-03-24 19:53:52,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:52,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:52,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:52,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:52,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 161 [2021-03-24 19:53:52,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:52,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:52,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 161 [2021-03-24 19:53:52,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:52,197 INFO L129 PetriNetUnfolder]: 7/61 cut-off events. [2021-03-24 19:53:52,197 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-24 19:53:52,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 61 events. 7/61 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 3 based on Foata normal form. 5/61 useless extension candidates. Maximal degree in co-relation 97. Up to 17 conditions per place. [2021-03-24 19:53:52,198 INFO L132 encePairwiseOnDemand]: 157/161 looper letters, 2 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2021-03-24 19:53:52,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 115 flow [2021-03-24 19:53:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 708 transitions. [2021-03-24 19:53:52,200 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8795031055900621 [2021-03-24 19:53:52,200 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 708 transitions. [2021-03-24 19:53:52,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 708 transitions. [2021-03-24 19:53:52,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:52,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 708 transitions. [2021-03-24 19:53:52,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:52,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,205 INFO L185 Difference]: Start difference. First operand has 46 places, 34 transitions, 97 flow. Second operand 5 states and 708 transitions. [2021-03-24 19:53:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 115 flow [2021-03-24 19:53:52,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 110 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:53:52,207 INFO L241 Difference]: Finished difference. Result has 49 places, 34 transitions, 104 flow [2021-03-24 19:53:52,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2021-03-24 19:53:52,207 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2021-03-24 19:53:52,207 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 104 flow [2021-03-24 19:53:52,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:52,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:52,208 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 19:53:52,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:53:52,208 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash -540858674, now seen corresponding path program 1 times [2021-03-24 19:53:52,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:52,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580382817] [2021-03-24 19:53:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:52,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:52,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:52,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:52,322 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 19:53:52,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580382817] [2021-03-24 19:53:52,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:52,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:52,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490233741] [2021-03-24 19:53:52,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:52,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:52,326 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 161 [2021-03-24 19:53:52,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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 19:53:52,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:52,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 161 [2021-03-24 19:53:52,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:52,379 INFO L129 PetriNetUnfolder]: 10/73 cut-off events. [2021-03-24 19:53:52,379 INFO L130 PetriNetUnfolder]: For 61/94 co-relation queries the response was YES. [2021-03-24 19:53:52,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 73 events. 10/73 cut-off events. For 61/94 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 252 event pairs, 0 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 151. Up to 23 conditions per place. [2021-03-24 19:53:52,381 INFO L132 encePairwiseOnDemand]: 154/161 looper letters, 6 selfloop transitions, 5 changer transitions 4/40 dead transitions. [2021-03-24 19:53:52,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 169 flow [2021-03-24 19:53:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2021-03-24 19:53:52,384 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8521739130434782 [2021-03-24 19:53:52,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2021-03-24 19:53:52,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2021-03-24 19:53:52,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:52,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2021-03-24 19:53:52,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 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 19:53:52,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,388 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:52,388 INFO L185 Difference]: Start difference. First operand has 49 places, 34 transitions, 104 flow. Second operand 5 states and 686 transitions. [2021-03-24 19:53:52,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 169 flow [2021-03-24 19:53:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 159 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:52,391 INFO L241 Difference]: Finished difference. Result has 49 places, 34 transitions, 115 flow [2021-03-24 19:53:52,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2021-03-24 19:53:52,391 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2021-03-24 19:53:52,392 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 115 flow [2021-03-24 19:53:52,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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 19:53:52,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:52,392 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 19:53:52,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:53:52,392 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:52,393 INFO L82 PathProgramCache]: Analyzing trace with hash -43674172, now seen corresponding path program 2 times [2021-03-24 19:53:52,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:52,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877157259] [2021-03-24 19:53:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:52,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:52,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:52,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:52,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:52,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:53:52,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:52,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:52,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:52,578 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 19:53:52,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877157259] [2021-03-24 19:53:52,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:52,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:53:52,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101253744] [2021-03-24 19:53:52,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:53:52,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:53:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:53:52,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 161 [2021-03-24 19:53:52,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 115 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 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 19:53:52,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:52,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 161 [2021-03-24 19:53:52,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:52,764 INFO L129 PetriNetUnfolder]: 174/365 cut-off events. [2021-03-24 19:53:52,764 INFO L130 PetriNetUnfolder]: For 331/341 co-relation queries the response was YES. [2021-03-24 19:53:52,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 365 events. 174/365 cut-off events. For 331/341 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1673 event pairs, 53 based on Foata normal form. 27/373 useless extension candidates. Maximal degree in co-relation 839. Up to 214 conditions per place. [2021-03-24 19:53:52,768 INFO L132 encePairwiseOnDemand]: 150/161 looper letters, 11 selfloop transitions, 10 changer transitions 13/55 dead transitions. [2021-03-24 19:53:52,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 237 flow [2021-03-24 19:53:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:53:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:53:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1247 transitions. [2021-03-24 19:53:52,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7745341614906832 [2021-03-24 19:53:52,772 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1247 transitions. [2021-03-24 19:53:52,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1247 transitions. [2021-03-24 19:53:52,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:52,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1247 transitions. [2021-03-24 19:53:52,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.7) internal successors, (1247), 10 states have internal predecessors, (1247), 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 19:53:52,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 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 19:53:52,781 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 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 19:53:52,781 INFO L185 Difference]: Start difference. First operand has 49 places, 34 transitions, 115 flow. Second operand 10 states and 1247 transitions. [2021-03-24 19:53:52,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 237 flow [2021-03-24 19:53:52,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 219 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:52,787 INFO L241 Difference]: Finished difference. Result has 58 places, 39 transitions, 164 flow [2021-03-24 19:53:52,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2021-03-24 19:53:52,787 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2021-03-24 19:53:52,787 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 164 flow [2021-03-24 19:53:52,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 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 19:53:52,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:52,788 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:52,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:53:52,788 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1274464776, now seen corresponding path program 1 times [2021-03-24 19:53:52,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:52,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317829618] [2021-03-24 19:53:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:52,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:52,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:52,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:52,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:52,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:52,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:52,908 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 19:53:52,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317829618] [2021-03-24 19:53:52,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:52,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:53:52,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135269130] [2021-03-24 19:53:52,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:53:52,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:52,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:53:52,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:53:52,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 161 [2021-03-24 19:53:52,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 19:53:52,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:52,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 161 [2021-03-24 19:53:52,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:53,112 INFO L129 PetriNetUnfolder]: 169/349 cut-off events. [2021-03-24 19:53:53,113 INFO L130 PetriNetUnfolder]: For 776/801 co-relation queries the response was YES. [2021-03-24 19:53:53,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 349 events. 169/349 cut-off events. For 776/801 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1537 event pairs, 67 based on Foata normal form. 22/353 useless extension candidates. Maximal degree in co-relation 1137. Up to 197 conditions per place. [2021-03-24 19:53:53,116 INFO L132 encePairwiseOnDemand]: 152/161 looper letters, 16 selfloop transitions, 9 changer transitions 10/58 dead transitions. [2021-03-24 19:53:53,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 332 flow [2021-03-24 19:53:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:53:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:53:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1042 transitions. [2021-03-24 19:53:53,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8090062111801242 [2021-03-24 19:53:53,120 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1042 transitions. [2021-03-24 19:53:53,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1042 transitions. [2021-03-24 19:53:53,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:53,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1042 transitions. [2021-03-24 19:53:53,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.25) internal successors, (1042), 8 states have internal predecessors, (1042), 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 19:53:53,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 19:53:53,125 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 19:53:53,125 INFO L185 Difference]: Start difference. First operand has 58 places, 39 transitions, 164 flow. Second operand 8 states and 1042 transitions. [2021-03-24 19:53:53,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 332 flow [2021-03-24 19:53:53,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 322 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:53,130 INFO L241 Difference]: Finished difference. Result has 62 places, 43 transitions, 213 flow [2021-03-24 19:53:53,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2021-03-24 19:53:53,130 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-03-24 19:53:53,130 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 213 flow [2021-03-24 19:53:53,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 19:53:53,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:53,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:53,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:53:53,131 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1419612700, now seen corresponding path program 2 times [2021-03-24 19:53:53,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:53,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842273097] [2021-03-24 19:53:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:53,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:53,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:53,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:53,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:53,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 19:53:53,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:53,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:53,281 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 19:53:53,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842273097] [2021-03-24 19:53:53,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:53,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:53:53,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191355376] [2021-03-24 19:53:53,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:53:53,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:53,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:53:53,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:53:53,284 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 161 [2021-03-24 19:53:53,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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 19:53:53,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:53,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 161 [2021-03-24 19:53:53,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:53,468 INFO L129 PetriNetUnfolder]: 148/315 cut-off events. [2021-03-24 19:53:53,468 INFO L130 PetriNetUnfolder]: For 1306/1339 co-relation queries the response was YES. [2021-03-24 19:53:53,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 315 events. 148/315 cut-off events. For 1306/1339 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1342 event pairs, 60 based on Foata normal form. 21/320 useless extension candidates. Maximal degree in co-relation 1288. Up to 184 conditions per place. [2021-03-24 19:53:53,472 INFO L132 encePairwiseOnDemand]: 152/161 looper letters, 16 selfloop transitions, 9 changer transitions 7/55 dead transitions. [2021-03-24 19:53:53,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 369 flow [2021-03-24 19:53:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:53:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:53:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1047 transitions. [2021-03-24 19:53:53,476 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.812888198757764 [2021-03-24 19:53:53,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1047 transitions. [2021-03-24 19:53:53,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1047 transitions. [2021-03-24 19:53:53,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:53,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1047 transitions. [2021-03-24 19:53:53,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 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 19:53:53,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 19:53:53,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 19:53:53,481 INFO L185 Difference]: Start difference. First operand has 62 places, 43 transitions, 213 flow. Second operand 8 states and 1047 transitions. [2021-03-24 19:53:53,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 369 flow [2021-03-24 19:53:53,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 346 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:53,487 INFO L241 Difference]: Finished difference. Result has 65 places, 43 transitions, 221 flow [2021-03-24 19:53:53,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=221, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2021-03-24 19:53:53,487 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2021-03-24 19:53:53,487 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 221 flow [2021-03-24 19:53:53,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 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 19:53:53,488 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:53,488 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 19:53:53,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:53:53,488 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:53,490 INFO L82 PathProgramCache]: Analyzing trace with hash 343347380, now seen corresponding path program 1 times [2021-03-24 19:53:53,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:53,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224040318] [2021-03-24 19:53:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:53,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:53,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:53,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:53,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:53,541 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 19:53:53,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224040318] [2021-03-24 19:53:53,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:53,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:53:53,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239437776] [2021-03-24 19:53:53,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:53,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:53,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 161 [2021-03-24 19:53:53,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 19:53:53,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:53,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 161 [2021-03-24 19:53:53,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:53,628 INFO L129 PetriNetUnfolder]: 141/364 cut-off events. [2021-03-24 19:53:53,628 INFO L130 PetriNetUnfolder]: For 1879/1968 co-relation queries the response was YES. [2021-03-24 19:53:53,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 364 events. 141/364 cut-off events. For 1879/1968 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2047 event pairs, 66 based on Foata normal form. 28/369 useless extension candidates. Maximal degree in co-relation 1361. Up to 167 conditions per place. [2021-03-24 19:53:53,632 INFO L132 encePairwiseOnDemand]: 157/161 looper letters, 7 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2021-03-24 19:53:53,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 47 transitions, 283 flow [2021-03-24 19:53:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2021-03-24 19:53:53,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.867080745341615 [2021-03-24 19:53:53,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2021-03-24 19:53:53,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2021-03-24 19:53:53,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:53,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2021-03-24 19:53:53,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 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 19:53:53,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:53,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:53,639 INFO L185 Difference]: Start difference. First operand has 65 places, 43 transitions, 221 flow. Second operand 5 states and 698 transitions. [2021-03-24 19:53:53,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 47 transitions, 283 flow [2021-03-24 19:53:53,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 47 transitions, 244 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-24 19:53:53,645 INFO L241 Difference]: Finished difference. Result has 62 places, 43 transitions, 205 flow [2021-03-24 19:53:53,645 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2021-03-24 19:53:53,646 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-03-24 19:53:53,646 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 205 flow [2021-03-24 19:53:53,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 19:53:53,646 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:53,646 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 19:53:53,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:53:53,646 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 854670892, now seen corresponding path program 1 times [2021-03-24 19:53:53,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:53,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590719528] [2021-03-24 19:53:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:53,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:53,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:53,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:53,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:53,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:53,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:53:53,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:53,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:53,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:53,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:53,794 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 19:53:53,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590719528] [2021-03-24 19:53:53,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:53,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 19:53:53,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852078528] [2021-03-24 19:53:53,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 19:53:53,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:53,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 19:53:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-03-24 19:53:53,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 161 [2021-03-24 19:53:53,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 205 flow. Second operand has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 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 19:53:53,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:53,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 161 [2021-03-24 19:53:53,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:53,938 INFO L129 PetriNetUnfolder]: 148/345 cut-off events. [2021-03-24 19:53:53,938 INFO L130 PetriNetUnfolder]: For 1281/1338 co-relation queries the response was YES. [2021-03-24 19:53:53,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 345 events. 148/345 cut-off events. For 1281/1338 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1664 event pairs, 43 based on Foata normal form. 28/366 useless extension candidates. Maximal degree in co-relation 1347. Up to 227 conditions per place. [2021-03-24 19:53:53,941 INFO L132 encePairwiseOnDemand]: 151/161 looper letters, 16 selfloop transitions, 11 changer transitions 6/54 dead transitions. [2021-03-24 19:53:53,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 341 flow [2021-03-24 19:53:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:53:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:53:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1249 transitions. [2021-03-24 19:53:53,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775776397515528 [2021-03-24 19:53:53,946 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1249 transitions. [2021-03-24 19:53:53,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1249 transitions. [2021-03-24 19:53:53,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:53,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1249 transitions. [2021-03-24 19:53:53,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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 19:53:53,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 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 19:53:53,952 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 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 19:53:53,952 INFO L185 Difference]: Start difference. First operand has 62 places, 43 transitions, 205 flow. Second operand 10 states and 1249 transitions. [2021-03-24 19:53:53,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 341 flow [2021-03-24 19:53:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 332 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:53:53,956 INFO L241 Difference]: Finished difference. Result has 69 places, 45 transitions, 247 flow [2021-03-24 19:53:53,956 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2021-03-24 19:53:53,956 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-24 19:53:53,956 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 247 flow [2021-03-24 19:53:53,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 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 19:53:53,957 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:53,957 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 19:53:53,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:53:53,957 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:53,958 INFO L82 PathProgramCache]: Analyzing trace with hash 426682412, now seen corresponding path program 1 times [2021-03-24 19:53:53,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:53,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971938602] [2021-03-24 19:53:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:54,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:54,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:54,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:54,049 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 19:53:54,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971938602] [2021-03-24 19:53:54,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:54,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:53:54,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657796770] [2021-03-24 19:53:54,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:53:54,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:53:54,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:53:54,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 161 [2021-03-24 19:53:54,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 129.33333333333334) internal successors, (776), 6 states have internal predecessors, (776), 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 19:53:54,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:54,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 161 [2021-03-24 19:53:54,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:54,187 INFO L129 PetriNetUnfolder]: 162/394 cut-off events. [2021-03-24 19:53:54,188 INFO L130 PetriNetUnfolder]: For 1699/1780 co-relation queries the response was YES. [2021-03-24 19:53:54,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 394 events. 162/394 cut-off events. For 1699/1780 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2130 event pairs, 50 based on Foata normal form. 23/408 useless extension candidates. Maximal degree in co-relation 1679. Up to 211 conditions per place. [2021-03-24 19:53:54,191 INFO L132 encePairwiseOnDemand]: 153/161 looper letters, 17 selfloop transitions, 11 changer transitions 7/58 dead transitions. [2021-03-24 19:53:54,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 58 transitions, 433 flow [2021-03-24 19:53:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 922 transitions. [2021-03-24 19:53:54,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8181011535048802 [2021-03-24 19:53:54,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 922 transitions. [2021-03-24 19:53:54,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 922 transitions. [2021-03-24 19:53:54,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:54,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 922 transitions. [2021-03-24 19:53:54,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 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 19:53:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 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 19:53:54,199 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 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 19:53:54,199 INFO L185 Difference]: Start difference. First operand has 69 places, 45 transitions, 247 flow. Second operand 7 states and 922 transitions. [2021-03-24 19:53:54,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 58 transitions, 433 flow [2021-03-24 19:53:54,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 410 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-24 19:53:54,204 INFO L241 Difference]: Finished difference. Result has 69 places, 48 transitions, 301 flow [2021-03-24 19:53:54,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2021-03-24 19:53:54,205 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-24 19:53:54,205 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 301 flow [2021-03-24 19:53:54,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 129.33333333333334) internal successors, (776), 6 states have internal predecessors, (776), 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 19:53:54,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:54,205 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 19:53:54,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:53:54,206 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:54,206 INFO L82 PathProgramCache]: Analyzing trace with hash -591786449, now seen corresponding path program 1 times [2021-03-24 19:53:54,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:54,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848291327] [2021-03-24 19:53:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:54,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,290 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 19:53:54,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848291327] [2021-03-24 19:53:54,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:54,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:54,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841670558] [2021-03-24 19:53:54,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:54,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:54,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:54,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:54,293 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2021-03-24 19:53:54,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 19:53:54,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:54,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2021-03-24 19:53:54,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:54,447 INFO L129 PetriNetUnfolder]: 288/647 cut-off events. [2021-03-24 19:53:54,448 INFO L130 PetriNetUnfolder]: For 2423/2599 co-relation queries the response was YES. [2021-03-24 19:53:54,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 647 events. 288/647 cut-off events. For 2423/2599 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 3964 event pairs, 96 based on Foata normal form. 97/646 useless extension candidates. Maximal degree in co-relation 2391. Up to 319 conditions per place. [2021-03-24 19:53:54,454 INFO L132 encePairwiseOnDemand]: 155/161 looper letters, 11 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2021-03-24 19:53:54,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 361 flow [2021-03-24 19:53:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 675 transitions. [2021-03-24 19:53:54,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8385093167701864 [2021-03-24 19:53:54,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 675 transitions. [2021-03-24 19:53:54,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 675 transitions. [2021-03-24 19:53:54,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:54,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 675 transitions. [2021-03-24 19:53:54,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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 19:53:54,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:54,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 19:53:54,461 INFO L185 Difference]: Start difference. First operand has 69 places, 48 transitions, 301 flow. Second operand 5 states and 675 transitions. [2021-03-24 19:53:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 361 flow [2021-03-24 19:53:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 59 transitions, 340 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:54,468 INFO L241 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2021-03-24 19:53:54,468 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2021-03-24 19:53:54,468 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2021-03-24 19:53:54,468 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2021-03-24 19:53:54,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 19:53:54,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:54,469 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 19:53:54,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:53:54,469 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1727090904, now seen corresponding path program 1 times [2021-03-24 19:53:54,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:54,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277379189] [2021-03-24 19:53:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:54,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:54,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:54,531 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 19:53:54,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277379189] [2021-03-24 19:53:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:54,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:54,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881609419] [2021-03-24 19:53:54,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:54,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:54,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 161 [2021-03-24 19:53:54,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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 19:53:54,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:54,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 161 [2021-03-24 19:53:54,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:54,697 INFO L129 PetriNetUnfolder]: 405/929 cut-off events. [2021-03-24 19:53:54,698 INFO L130 PetriNetUnfolder]: For 4892/5215 co-relation queries the response was YES. [2021-03-24 19:53:54,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4027 conditions, 929 events. 405/929 cut-off events. For 4892/5215 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6503 event pairs, 154 based on Foata normal form. 95/952 useless extension candidates. Maximal degree in co-relation 3984. Up to 412 conditions per place. [2021-03-24 19:53:54,707 INFO L132 encePairwiseOnDemand]: 156/161 looper letters, 7 selfloop transitions, 3 changer transitions 3/59 dead transitions. [2021-03-24 19:53:54,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 410 flow [2021-03-24 19:53:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:53:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:53:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2021-03-24 19:53:54,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8457556935817805 [2021-03-24 19:53:54,710 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2021-03-24 19:53:54,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2021-03-24 19:53:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:54,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2021-03-24 19:53:54,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 19:53:54,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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 19:53:54,714 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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 19:53:54,714 INFO L185 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 6 states and 817 transitions. [2021-03-24 19:53:54,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 410 flow [2021-03-24 19:53:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 59 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:53:54,724 INFO L241 Difference]: Finished difference. Result has 77 places, 55 transitions, 355 flow [2021-03-24 19:53:54,724 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2021-03-24 19:53:54,724 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2021-03-24 19:53:54,724 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 355 flow [2021-03-24 19:53:54,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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 19:53:54,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:54,725 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 19:53:54,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 19:53:54,725 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:54,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1761736912, now seen corresponding path program 2 times [2021-03-24 19:53:54,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:54,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448291726] [2021-03-24 19:53:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:54,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,809 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 19:53:54,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448291726] [2021-03-24 19:53:54,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:54,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:53:54,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227469887] [2021-03-24 19:53:54,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:54,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:54,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:54,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:54,811 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2021-03-24 19:53:54,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 19:53:54,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:54,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2021-03-24 19:53:54,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:54,912 INFO L129 PetriNetUnfolder]: 175/465 cut-off events. [2021-03-24 19:53:54,912 INFO L130 PetriNetUnfolder]: For 1835/2624 co-relation queries the response was YES. [2021-03-24 19:53:54,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 465 events. 175/465 cut-off events. For 1835/2624 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2928 event pairs, 20 based on Foata normal form. 236/648 useless extension candidates. Maximal degree in co-relation 1823. Up to 245 conditions per place. [2021-03-24 19:53:54,917 INFO L132 encePairwiseOnDemand]: 155/161 looper letters, 8 selfloop transitions, 15 changer transitions 3/66 dead transitions. [2021-03-24 19:53:54,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 459 flow [2021-03-24 19:53:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2021-03-24 19:53:54,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8385093167701864 [2021-03-24 19:53:54,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2021-03-24 19:53:54,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2021-03-24 19:53:54,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:54,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2021-03-24 19:53:54,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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 19:53:54,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 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 19:53:54,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 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 19:53:54,925 INFO L185 Difference]: Start difference. First operand has 77 places, 55 transitions, 355 flow. Second operand 7 states and 945 transitions. [2021-03-24 19:53:54,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 459 flow [2021-03-24 19:53:54,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 444 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 19:53:54,931 INFO L241 Difference]: Finished difference. Result has 78 places, 61 transitions, 429 flow [2021-03-24 19:53:54,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2021-03-24 19:53:54,931 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2021-03-24 19:53:54,931 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 429 flow [2021-03-24 19:53:54,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 19:53:54,932 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:54,932 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] [2021-03-24 19:53:54,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 19:53:54,932 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:54,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1761056879, now seen corresponding path program 1 times [2021-03-24 19:53:54,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:54,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303268434] [2021-03-24 19:53:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:54,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:54,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:54,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:54,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:55,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:55,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:55,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:55,012 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 19:53:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303268434] [2021-03-24 19:53:55,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:55,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:53:55,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786119231] [2021-03-24 19:53:55,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:53:55,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:55,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:53:55,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:53:55,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2021-03-24 19:53:55,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 19:53:55,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:55,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2021-03-24 19:53:55,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:55,123 INFO L129 PetriNetUnfolder]: 142/393 cut-off events. [2021-03-24 19:53:55,123 INFO L130 PetriNetUnfolder]: For 2419/3423 co-relation queries the response was YES. [2021-03-24 19:53:55,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 393 events. 142/393 cut-off events. For 2419/3423 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2518 event pairs, 5 based on Foata normal form. 223/565 useless extension candidates. Maximal degree in co-relation 1788. Up to 226 conditions per place. [2021-03-24 19:53:55,127 INFO L132 encePairwiseOnDemand]: 155/161 looper letters, 5 selfloop transitions, 19 changer transitions 11/68 dead transitions. [2021-03-24 19:53:55,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 521 flow [2021-03-24 19:53:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:53:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:53:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1209 transitions. [2021-03-24 19:53:55,131 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8343685300207039 [2021-03-24 19:53:55,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1209 transitions. [2021-03-24 19:53:55,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1209 transitions. [2021-03-24 19:53:55,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:55,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1209 transitions. [2021-03-24 19:53:55,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.33333333333334) internal successors, (1209), 9 states have internal predecessors, (1209), 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 19:53:55,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 19:53:55,148 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 19:53:55,149 INFO L185 Difference]: Start difference. First operand has 78 places, 61 transitions, 429 flow. Second operand 9 states and 1209 transitions. [2021-03-24 19:53:55,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 521 flow [2021-03-24 19:53:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 441 flow, removed 33 selfloop flow, removed 6 redundant places. [2021-03-24 19:53:55,157 INFO L241 Difference]: Finished difference. Result has 83 places, 55 transitions, 369 flow [2021-03-24 19:53:55,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=369, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2021-03-24 19:53:55,157 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2021-03-24 19:53:55,157 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 369 flow [2021-03-24 19:53:55,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 19:53:55,158 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:55,158 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] [2021-03-24 19:53:55,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 19:53:55,158 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash -777728901, now seen corresponding path program 1 times [2021-03-24 19:53:55,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:55,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338069279] [2021-03-24 19:53:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:55,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:55,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:55,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:53:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:55,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:55,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 19:53:55,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 19:53:55,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 19:53:55,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:55,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:55,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:53:55,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:55,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:55,413 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 19:53:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338069279] [2021-03-24 19:53:55,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:55,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-24 19:53:55,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484910281] [2021-03-24 19:53:55,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-24 19:53:55,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:55,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-24 19:53:55,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-03-24 19:53:55,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 161 [2021-03-24 19:53:55,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 369 flow. Second operand has 12 states, 12 states have (on average 115.25) internal successors, (1383), 12 states have internal predecessors, (1383), 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 19:53:55,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:55,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 161 [2021-03-24 19:53:55,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:55,580 INFO L129 PetriNetUnfolder]: 44/171 cut-off events. [2021-03-24 19:53:55,580 INFO L130 PetriNetUnfolder]: For 1042/1156 co-relation queries the response was YES. [2021-03-24 19:53:55,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 171 events. 44/171 cut-off events. For 1042/1156 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 852 event pairs, 0 based on Foata normal form. 19/179 useless extension candidates. Maximal degree in co-relation 706. Up to 50 conditions per place. [2021-03-24 19:53:55,583 INFO L132 encePairwiseOnDemand]: 152/161 looper letters, 13 selfloop transitions, 9 changer transitions 5/59 dead transitions. [2021-03-24 19:53:55,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 59 transitions, 467 flow [2021-03-24 19:53:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:53:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:53:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1047 transitions. [2021-03-24 19:53:55,588 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.722567287784679 [2021-03-24 19:53:55,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1047 transitions. [2021-03-24 19:53:55,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1047 transitions. [2021-03-24 19:53:55,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:55,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1047 transitions. [2021-03-24 19:53:55,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.33333333333333) internal successors, (1047), 9 states have internal predecessors, (1047), 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 19:53:55,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 19:53:55,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 19:53:55,595 INFO L185 Difference]: Start difference. First operand has 83 places, 55 transitions, 369 flow. Second operand 9 states and 1047 transitions. [2021-03-24 19:53:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 59 transitions, 467 flow [2021-03-24 19:53:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 363 flow, removed 31 selfloop flow, removed 15 redundant places. [2021-03-24 19:53:55,600 INFO L241 Difference]: Finished difference. Result has 75 places, 52 transitions, 286 flow [2021-03-24 19:53:55,600 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2021-03-24 19:53:55,600 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2021-03-24 19:53:55,600 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 286 flow [2021-03-24 19:53:55,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 115.25) internal successors, (1383), 12 states have internal predecessors, (1383), 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 19:53:55,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:55,601 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] [2021-03-24 19:53:55,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 19:53:55,601 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1422343713, now seen corresponding path program 2 times [2021-03-24 19:53:55,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:55,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294418402] [2021-03-24 19:53:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:53:55,646 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:53:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:53:55,705 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:53:55,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 19:53:55,747 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 19:53:55,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 19:53:55,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:53:55 BasicIcfg [2021-03-24 19:53:55,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:53:55,854 INFO L168 Benchmark]: Toolchain (without parser) took 14820.17 ms. Allocated memory was 335.5 MB in the beginning and 589.3 MB in the end (delta: 253.8 MB). Free memory was 298.5 MB in the beginning and 469.4 MB in the end (delta: -171.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,855 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 335.5 MB. Free memory was 317.0 MB in the beginning and 317.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:53:55,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.25 ms. Allocated memory is still 335.5 MB. Free memory was 298.2 MB in the beginning and 295.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.73 ms. Allocated memory is still 335.5 MB. Free memory was 295.3 MB in the beginning and 292.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,855 INFO L168 Benchmark]: Boogie Preprocessor took 56.75 ms. Allocated memory is still 335.5 MB. Free memory was 292.2 MB in the beginning and 290.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,855 INFO L168 Benchmark]: RCFGBuilder took 1905.76 ms. Allocated memory is still 335.5 MB. Free memory was 290.1 MB in the beginning and 232.9 MB in the end (delta: 57.1 MB). Peak memory consumption was 146.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,856 INFO L168 Benchmark]: TraceAbstraction took 12234.66 ms. Allocated memory was 335.5 MB in the beginning and 589.3 MB in the end (delta: 253.8 MB). Free memory was 232.9 MB in the beginning and 469.4 MB in the end (delta: -236.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:55,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 335.5 MB. Free memory was 317.0 MB in the beginning and 317.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 536.25 ms. Allocated memory is still 335.5 MB. Free memory was 298.2 MB in the beginning and 295.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 79.73 ms. Allocated memory is still 335.5 MB. Free memory was 295.3 MB in the beginning and 292.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.75 ms. Allocated memory is still 335.5 MB. Free memory was 292.2 MB in the beginning and 290.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1905.76 ms. Allocated memory is still 335.5 MB. Free memory was 290.1 MB in the beginning and 232.9 MB in the end (delta: 57.1 MB). Peak memory consumption was 146.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12234.66 ms. Allocated memory was 335.5 MB in the beginning and 589.3 MB in the end (delta: 253.8 MB). Free memory was 232.9 MB in the beginning and 469.4 MB in the end (delta: -236.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7659.3ms, 100 PlacesBefore, 46 PlacesAfterwards, 92 TransitionsBefore, 37 TransitionsAfterwards, 1602 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 2709 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1459, positive: 1380, positive conditional: 0, positive unconditional: 1380, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1088, positive: 1052, positive conditional: 0, positive unconditional: 1052, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1088, positive: 1052, positive conditional: 0, positive unconditional: 1052, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1088, positive: 1045, positive conditional: 0, positive unconditional: 1045, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 656, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 621, negative conditional: 0, negative unconditional: 621, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1459, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 1088, unknown conditional: 0, unknown unconditional: 1088] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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] [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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$r_buff0_thd2=0] [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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] [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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] [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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$w_buff0_used=0] [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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, y$w_buff1_used=0] [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L813] 0 pthread_t t2192; [L814] FCALL, FORK 0 pthread_create(&t2192, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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] [L739] 1 y$w_buff1 = y$w_buff0 [L740] 1 y$w_buff0 = 2 [L741] 1 y$w_buff1_used = y$w_buff0_used [L742] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L744] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L745] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L746] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L747] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L748] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L815] 0 pthread_t t2193; [L816] FCALL, FORK 0 pthread_create(&t2193, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L768] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L817] 0 pthread_t t2194; [L818] FCALL, FORK 0 pthread_create(&t2194, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L785] 3 __unbuffered_p2_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=2, 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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L771] 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) [L771] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L771] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L772] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L773] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L773] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L774] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L774] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L775] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L775] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L788] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$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=1, 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$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L754] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L754] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L755] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L755] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L756] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L756] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L757] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L757] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L758] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L758] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L761] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L763] 1 return 0; [L791] 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) [L791] EXPR 3 y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L778] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L780] 2 return 0; [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L800] 3 return 0; [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L824] 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) [L824] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 y$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 [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] EXPR 0 weak$$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$w_buff0)) [L836] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] 0 y$w_buff0 = weak$$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)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L837] EXPR 0 weak$$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$w_buff1)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] EXPR 0 weak$$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)) [L838] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] 0 y$w_buff0_used = weak$$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)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L839] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] EXPR 0 weak$$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)) [L840] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] 0 y$r_buff0_thd0 = weak$$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)) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L841] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 2) [L843] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, 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$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 94 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 12006.8ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2247.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7733.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 107 SDtfs, 121 SDslu, 131 SDs, 0 SdLazy, 449 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 588.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 616.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=13, InterpolantAutomatonStates: 102, 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: 61.2ms SsaConstructionTime, 434.0ms SatisfiabilityAnalysisTime, 1200.8ms InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 1729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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...