/usr/bin/java -Xmx8000000000 -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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:55:54,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:55:54,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:55:54,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:55:54,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:55:54,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:55:54,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:55:54,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:55:54,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:55:54,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:55:54,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:55:54,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:55:54,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:55:54,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:55:54,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:55:54,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:55:54,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:55:54,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:55:54,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:55:54,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:55:54,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:55:54,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:55:54,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:55:54,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:55:54,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:55:54,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:55:54,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:55:54,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:55:54,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:55:54,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-06 16:55:54,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:55:54,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:55:54,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:55:54,760 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-NoLbe.epf [2022-12-06 16:55:54,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:55:54,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:55:54,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:55:54,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:55:54,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:55:54,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:55:54,785 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:55:54,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:55:54,785 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:55:54,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:55:54,786 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:55:54,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:55:54,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:55:54,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:55:54,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:55:54,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:55:55,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:55:55,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:55:55,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:55:55,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:55:55,075 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:55:55,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2022-12-06 16:55:55,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:55:56,211 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:55:56,211 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2022-12-06 16:55:56,221 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468592536/d94ed4d250f24478a250929bd8849054/FLAG8ee8c8679 [2022-12-06 16:55:56,232 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468592536/d94ed4d250f24478a250929bd8849054 [2022-12-06 16:55:56,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:55:56,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:55:56,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:55:56,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:55:56,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:55:56,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fa1688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56, skipping insertion in model container [2022-12-06 16:55:56,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:55:56,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:55:56,382 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-12-06 16:55:56,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:55:56,609 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:55:56,617 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-12-06 16:55:56,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:55:56,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:55:56,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:55:56,720 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:55:56,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56 WrapperNode [2022-12-06 16:55:56,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:55:56,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:55:56,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:55:56,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:55:56,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,756 INFO L138 Inliner]: procedures = 365, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-06 16:55:56,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:55:56,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:55:56,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:55:56,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:55:56,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:55:56,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:55:56,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:55:56,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:55:56,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (1/1) ... [2022-12-06 16:55:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:55:56,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:55:56,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 16:55:56,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 16:55:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:55:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:55:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2022-12-06 16:55:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:55:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:55:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:55:56,865 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:55:56,982 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:55:56,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:55:57,135 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:55:57,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:55:57,140 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 16:55:57,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:55:57 BoogieIcfgContainer [2022-12-06 16:55:57,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:55:57,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:55:57,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:55:57,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:55:57,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:55:56" (1/3) ... [2022-12-06 16:55:57,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3ee3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:55:57, skipping insertion in model container [2022-12-06 16:55:57,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:55:56" (2/3) ... [2022-12-06 16:55:57,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3ee3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:55:57, skipping insertion in model container [2022-12-06 16:55:57,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:55:57" (3/3) ... [2022-12-06 16:55:57,153 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2022-12-06 16:55:57,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:55:57,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:55:57,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:55:57,219 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-06 16:55:57,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2022-12-06 16:55:57,311 INFO L130 PetriNetUnfolder]: 7/84 cut-off events. [2022-12-06 16:55:57,312 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:55:57,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-06 16:55:57,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 85 transitions, 178 flow [2022-12-06 16:55:57,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 74 transitions, 154 flow [2022-12-06 16:55:57,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:55:57,336 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c93f451, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:55:57,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-06 16:55:57,358 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2022-12-06 16:55:57,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:55:57,359 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:57,360 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:55:57,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:55:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:55:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1103797050, now seen corresponding path program 1 times [2022-12-06 16:55:57,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:55:57,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934137298] [2022-12-06 16:55:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:55:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:55:57,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:55:57,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934137298] [2022-12-06 16:55:57,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934137298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:55:57,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:55:57,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:55:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670177659] [2022-12-06 16:55:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:55:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:55:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:55:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:55:57,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:55:57,687 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2022-12-06 16:55:57,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:57,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:55:57,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2022-12-06 16:55:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:55:57,731 INFO L130 PetriNetUnfolder]: 2/75 cut-off events. [2022-12-06 16:55:57,732 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 16:55:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 75 events. 2/75 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 16/88 useless extension candidates. Maximal degree in co-relation 51. Up to 9 conditions per place. [2022-12-06 16:55:57,733 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 9 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-06 16:55:57,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 170 flow [2022-12-06 16:55:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:55:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:55:57,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2022-12-06 16:55:57,744 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8862745098039215 [2022-12-06 16:55:57,749 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2022-12-06 16:55:57,749 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 170 flow [2022-12-06 16:55:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:57,750 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:57,750 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-12-06 16:55:57,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:55:57,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:55:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:55:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -565338637, now seen corresponding path program 1 times [2022-12-06 16:55:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:55:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862944443] [2022-12-06 16:55:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:55:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:55:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:55:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862944443] [2022-12-06 16:55:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862944443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:55:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833856582] [2022-12-06 16:55:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:57,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:57,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:55:57,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:55:57,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 16:55:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:58,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-06 16:55:58,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:55:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:55:58,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 16:55:58,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833856582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:55:58,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 16:55:58,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-06 16:55:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661508776] [2022-12-06 16:55:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:55:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:55:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:55:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:55:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:55:58,059 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:55:58,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:58,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:55:58,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:55:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:55:58,088 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-12-06 16:55:58,089 INFO L131 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-12-06 16:55:58,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 79 events. 2/79 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 63. Up to 10 conditions per place. [2022-12-06 16:55:58,089 INFO L137 encePairwiseOnDemand]: 82/85 looper letters, 10 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-12-06 16:55:58,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 200 flow [2022-12-06 16:55:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:55:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:55:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-12-06 16:55:58,094 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8509803921568627 [2022-12-06 16:55:58,095 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2022-12-06 16:55:58,095 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 200 flow [2022-12-06 16:55:58,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:58,095 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:58,095 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:55:58,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 16:55:58,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:58,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:55:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:55:58,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1257076482, now seen corresponding path program 1 times [2022-12-06 16:55:58,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:55:58,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968700774] [2022-12-06 16:55:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:55:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:55:58,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:55:58,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968700774] [2022-12-06 16:55:58,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968700774] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:55:58,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106300969] [2022-12-06 16:55:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:58,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:58,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:55:58,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:55:58,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 16:55:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:58,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 16:55:58,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:55:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:55:58,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:55:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 16:55:58,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106300969] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:55:58,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:55:58,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-06 16:55:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977250562] [2022-12-06 16:55:58,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:55:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 16:55:58,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:55:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 16:55:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-06 16:55:58,548 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:55:58,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 69.9) internal successors, (699), 10 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:58,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:55:58,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:55:58,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:55:58,612 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-06 16:55:58,612 INFO L131 PetriNetUnfolder]: For 37/41 co-relation queries the response was YES. [2022-12-06 16:55:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 89 events. 2/89 cut-off events. For 37/41 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 93. Up to 13 conditions per place. [2022-12-06 16:55:58,613 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 9 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2022-12-06 16:55:58,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 256 flow [2022-12-06 16:55:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:55:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:55:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 632 transitions. [2022-12-06 16:55:58,615 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8261437908496732 [2022-12-06 16:55:58,616 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2022-12-06 16:55:58,616 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 256 flow [2022-12-06 16:55:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.9) internal successors, (699), 10 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:58,617 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:58,617 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:55:58,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-06 16:55:58,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-06 16:55:58,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:55:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:55:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -174423088, now seen corresponding path program 2 times [2022-12-06 16:55:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:55:58,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719451994] [2022-12-06 16:55:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:55:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:55:58,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719451994] [2022-12-06 16:55:58,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719451994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:55:58,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700355266] [2022-12-06 16:55:58,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:55:58,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:55:58,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:55:58,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 16:55:59,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:55:59,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:55:59,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 16:55:59,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:55:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:59,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:55:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:59,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700355266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:55:59,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:55:59,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-06 16:55:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927748084] [2022-12-06 16:55:59,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:55:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 16:55:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:55:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 16:55:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-06 16:55:59,111 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-06 16:55:59,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:59,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:55:59,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-06 16:55:59,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:55:59,189 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2022-12-06 16:55:59,190 INFO L131 PetriNetUnfolder]: For 105/239 co-relation queries the response was YES. [2022-12-06 16:55:59,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 96 events. 2/96 cut-off events. For 105/239 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 7/100 useless extension candidates. Maximal degree in co-relation 119. Up to 14 conditions per place. [2022-12-06 16:55:59,195 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 10 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2022-12-06 16:55:59,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 314 flow [2022-12-06 16:55:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:55:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:55:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 624 transitions. [2022-12-06 16:55:59,200 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8156862745098039 [2022-12-06 16:55:59,201 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2022-12-06 16:55:59,201 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 314 flow [2022-12-06 16:55:59,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:59,202 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:59,203 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:55:59,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 16:55:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:59,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:55:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:55:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1468200822, now seen corresponding path program 3 times [2022-12-06 16:55:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:55:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871084170] [2022-12-06 16:55:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:55:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:55:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:55:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:59,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:55:59,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871084170] [2022-12-06 16:55:59,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871084170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:55:59,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273773925] [2022-12-06 16:55:59,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 16:55:59,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:55:59,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:55:59,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:55:59,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 16:55:59,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 16:55:59,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:55:59,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 16:55:59,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:55:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:59,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:55:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:55:59,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273773925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:55:59,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:55:59,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-06 16:55:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281797640] [2022-12-06 16:55:59,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:55:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 16:55:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:55:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 16:55:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-06 16:55:59,789 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-06 16:55:59,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 314 flow. Second operand has 18 states, 18 states have (on average 69.0) internal successors, (1242), 18 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:59,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:55:59,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-06 16:55:59,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:55:59,938 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-06 16:55:59,938 INFO L131 PetriNetUnfolder]: For 225/274 co-relation queries the response was YES. [2022-12-06 16:55:59,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 116 events. 2/116 cut-off events. For 225/274 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 198. Up to 26 conditions per place. [2022-12-06 16:55:59,939 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 14 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2022-12-06 16:55:59,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 472 flow [2022-12-06 16:55:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-06 16:55:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-06 16:55:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1446 transitions. [2022-12-06 16:55:59,942 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8100840336134454 [2022-12-06 16:55:59,942 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2022-12-06 16:55:59,942 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 472 flow [2022-12-06 16:55:59,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.0) internal successors, (1242), 18 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:55:59,943 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:55:59,943 INFO L213 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:55:59,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 16:56:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:00,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:56:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -278382518, now seen corresponding path program 4 times [2022-12-06 16:56:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951412588] [2022-12-06 16:56:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:56:00,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:00,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951412588] [2022-12-06 16:56:00,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951412588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:56:00,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050848198] [2022-12-06 16:56:00,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 16:56:00,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:00,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:56:00,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 16:56:00,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 16:56:00,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:56:00,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 16:56:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:56:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:56:00,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:56:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:56:00,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050848198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:56:00,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:56:00,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-12-06 16:56:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683556878] [2022-12-06 16:56:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:56:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-06 16:56:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-06 16:56:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-06 16:56:00,734 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-06 16:56:00,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 472 flow. Second operand has 34 states, 34 states have (on average 69.0) internal successors, (2346), 34 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:00,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:00,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-06 16:56:00,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:56:01,163 INFO L130 PetriNetUnfolder]: 2/156 cut-off events. [2022-12-06 16:56:01,163 INFO L131 PetriNetUnfolder]: For 381/430 co-relation queries the response was YES. [2022-12-06 16:56:01,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 156 events. 2/156 cut-off events. For 381/430 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 389. Up to 50 conditions per place. [2022-12-06 16:56:01,165 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 22 selfloop transitions, 45 changer transitions 0/134 dead transitions. [2022-12-06 16:56:01,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 846 flow [2022-12-06 16:56:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 16:56:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 16:56:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3090 transitions. [2022-12-06 16:56:01,171 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.807843137254902 [2022-12-06 16:56:01,173 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 82 predicate places. [2022-12-06 16:56:01,173 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 134 transitions, 846 flow [2022-12-06 16:56:01,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.0) internal successors, (2346), 34 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:01,174 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:01,174 INFO L213 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:01,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-06 16:56:01,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:01,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:56:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -681794778, now seen corresponding path program 5 times [2022-12-06 16:56:01,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:01,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536511210] [2022-12-06 16:56:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:01,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-06 16:56:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:02,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536511210] [2022-12-06 16:56:02,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536511210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:56:02,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614363033] [2022-12-06 16:56:02,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 16:56:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:02,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:56:02,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 16:56:02,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-12-06 16:56:02,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:56:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 16:56:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:56:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-12-06 16:56:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:56:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-12-06 16:56:02,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614363033] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:56:02,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:56:02,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2022-12-06 16:56:02,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234048968] [2022-12-06 16:56:02,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:56:02,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 16:56:02,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:02,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 16:56:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2022-12-06 16:56:02,436 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2022-12-06 16:56:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 134 transitions, 846 flow. Second operand has 47 states, 47 states have (on average 62.297872340425535) internal successors, (2928), 47 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:02,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:02,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2022-12-06 16:56:02,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:56:41,418 INFO L130 PetriNetUnfolder]: 2209/5356 cut-off events. [2022-12-06 16:56:41,418 INFO L131 PetriNetUnfolder]: For 13095/13095 co-relation queries the response was YES. [2022-12-06 16:56:41,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22061 conditions, 5356 events. 2209/5356 cut-off events. For 13095/13095 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 34257 event pairs, 20 based on Foata normal form. 0/5252 useless extension candidates. Maximal degree in co-relation 21992. Up to 1605 conditions per place. [2022-12-06 16:56:41,463 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 961 selfloop transitions, 1927 changer transitions 0/2939 dead transitions. [2022-12-06 16:56:41,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1094 places, 2939 transitions, 27458 flow [2022-12-06 16:56:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 941 states. [2022-12-06 16:56:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2022-12-06 16:56:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 59556 transitions. [2022-12-06 16:56:41,522 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7445896105519785 [2022-12-06 16:56:41,523 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 1022 predicate places. [2022-12-06 16:56:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 1094 places, 2939 transitions, 27458 flow [2022-12-06 16:56:41,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 62.297872340425535) internal successors, (2928), 47 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:41,526 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:41,526 INFO L213 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:41,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 16:56:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:41,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:56:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1331627939, now seen corresponding path program 6 times [2022-12-06 16:56:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:41,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150781354] [2022-12-06 16:56:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-06 16:56:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150781354] [2022-12-06 16:56:42,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150781354] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:56:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869031693] [2022-12-06 16:56:42,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 16:56:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:42,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:56:42,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 16:56:42,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-12-06 16:56:42,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:56:42,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-06 16:56:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:56:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-06 16:56:42,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:56:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-06 16:56:43,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869031693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:56:43,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:56:43,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 43 [2022-12-06 16:56:43,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673756887] [2022-12-06 16:56:43,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:56:43,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-06 16:56:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-06 16:56:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-12-06 16:56:43,297 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-06 16:56:43,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1094 places, 2939 transitions, 27458 flow. Second operand has 43 states, 43 states have (on average 69.04651162790698) internal successors, (2969), 43 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:43,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:43,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-06 16:56:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:56:45,955 INFO L130 PetriNetUnfolder]: 2657/6659 cut-off events. [2022-12-06 16:56:45,955 INFO L131 PetriNetUnfolder]: For 23220/23220 co-relation queries the response was YES. [2022-12-06 16:56:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29383 conditions, 6659 events. 2657/6659 cut-off events. For 23220/23220 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 44241 event pairs, 76 based on Foata normal form. 0/6541 useless extension candidates. Maximal degree in co-relation 29309. Up to 1925 conditions per place. [2022-12-06 16:56:45,998 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 464 selfloop transitions, 1200 changer transitions 0/3219 dead transitions. [2022-12-06 16:56:45,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1153 places, 3219 transitions, 33986 flow [2022-12-06 16:56:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-06 16:56:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-06 16:56:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4111 transitions. [2022-12-06 16:56:46,001 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.806078431372549 [2022-12-06 16:56:46,001 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 1081 predicate places. [2022-12-06 16:56:46,001 INFO L495 AbstractCegarLoop]: Abstraction has has 1153 places, 3219 transitions, 33986 flow [2022-12-06 16:56:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 69.04651162790698) internal successors, (2969), 43 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:46,002 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:46,002 INFO L213 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:46,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 16:56:46,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:46,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:56:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2056351517, now seen corresponding path program 7 times [2022-12-06 16:56:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:46,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633373607] [2022-12-06 16:56:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 347 proven. 175 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-12-06 16:56:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633373607] [2022-12-06 16:56:46,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633373607] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:56:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942133151] [2022-12-06 16:56:46,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 16:56:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:46,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:56:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 16:56:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:46,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 16:56:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:56:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 347 proven. 175 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-12-06 16:56:46,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:56:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 347 proven. 175 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-12-06 16:56:46,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942133151] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:56:46,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:56:46,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-12-06 16:56:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288270706] [2022-12-06 16:56:46,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:56:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-06 16:56:46,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-06 16:56:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-06 16:56:46,893 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:56:46,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1153 places, 3219 transitions, 33986 flow. Second operand has 34 states, 34 states have (on average 69.97058823529412) internal successors, (2379), 34 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:46,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:46,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:56:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:56:51,207 INFO L130 PetriNetUnfolder]: 5313/14888 cut-off events. [2022-12-06 16:56:51,207 INFO L131 PetriNetUnfolder]: For 62374/62374 co-relation queries the response was YES. [2022-12-06 16:56:51,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65527 conditions, 14888 events. 5313/14888 cut-off events. For 62374/62374 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 117146 event pairs, 380 based on Foata normal form. 0/14736 useless extension candidates. Maximal degree in co-relation 65450. Up to 3845 conditions per place. [2022-12-06 16:56:51,292 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 895 selfloop transitions, 2115 changer transitions 0/4723 dead transitions. [2022-12-06 16:56:51,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1197 places, 4723 transitions, 51286 flow [2022-12-06 16:56:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 16:56:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 16:56:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3134 transitions. [2022-12-06 16:56:51,295 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8193464052287581 [2022-12-06 16:56:51,295 INFO L294 CegarLoopForPetriNet]: 72 programPoint places, 1125 predicate places. [2022-12-06 16:56:51,295 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 4723 transitions, 51286 flow [2022-12-06 16:56:51,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.97058823529412) internal successors, (2379), 34 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:51,296 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:51,297 INFO L213 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:51,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 16:56:51,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-06 16:56:51,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:56:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1829953405, now seen corresponding path program 8 times [2022-12-06 16:56:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:51,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573535268] [2022-12-06 16:56:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 1825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:56:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573535268] [2022-12-06 16:56:53,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573535268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:56:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001912425] [2022-12-06 16:56:53,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:56:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:56:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:53,217 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:56:53,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 16:56:53,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:56:53,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:56:53,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-06 16:56:53,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:56:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 1234 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-12-06 16:56:54,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:56:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 1234 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-12-06 16:56:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001912425] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:56:55,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:56:55,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 33, 33] total 98 [2022-12-06 16:56:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883981052] [2022-12-06 16:56:55,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:56:55,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-06 16:56:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-06 16:56:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=8151, Unknown=0, NotChecked=0, Total=9506 [2022-12-06 16:56:55,397 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 85 [2022-12-06 16:56:55,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 4723 transitions, 51286 flow. Second operand has 98 states, 98 states have (on average 59.95918367346939) internal successors, (5876), 98 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:55,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:55,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 85 [2022-12-06 16:56:55,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand