/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-inc.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:59:37,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:59:37,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:59:37,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:59:37,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:59:37,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:59:37,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:59:37,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:59:37,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:59:37,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:59:37,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:59:37,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:59:37,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:59:37,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:59:37,294 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:59:37,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:59:37,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:59:37,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:59:37,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:59:37,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:59:37,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:59:37,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:59:37,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:59:37,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:59:37,296 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:59:37,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:59:37,297 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:59:37,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:59:37,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:59:37,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:59:37,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:59:37,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:59:37,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:59:37,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:59:37,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:59:37,300 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:59:37,301 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:59:37,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:59:37,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:59:37,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:59:37,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:59:37,527 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:59:37,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-inc.wvr_bound2.c [2023-08-04 02:59:38,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:59:38,887 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:59:38,888 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-inc.wvr_bound2.c [2023-08-04 02:59:38,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b07d80d/f7c8a9c554b64693ac6e31c58a3af3ec/FLAG56675d0f8 [2023-08-04 02:59:38,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b07d80d/f7c8a9c554b64693ac6e31c58a3af3ec [2023-08-04 02:59:38,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:59:38,926 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:59:38,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:59:38,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:59:38,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:59:38,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:59:38" (1/1) ... [2023-08-04 02:59:38,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ad6edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:38, skipping insertion in model container [2023-08-04 02:59:38,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:59:38" (1/1) ... [2023-08-04 02:59:38,966 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:59:39,099 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-inc.wvr_bound2.c[3342,3355] [2023-08-04 02:59:39,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:59:39,112 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:59:39,134 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-inc.wvr_bound2.c[3342,3355] [2023-08-04 02:59:39,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:59:39,145 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:59:39,145 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:59:39,151 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:59:39,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39 WrapperNode [2023-08-04 02:59:39,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:59:39,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:59:39,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:59:39,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:59:39,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,191 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 203 [2023-08-04 02:59:39,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:59:39,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:59:39,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:59:39,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:59:39,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:59:39,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:59:39,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:59:39,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:59:39,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (1/1) ... [2023-08-04 02:59:39,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:59:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:59:39,274 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) [2023-08-04 02:59:39,293 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 [2023-08-04 02:59:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:59:39,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:59:39,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:59:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:59:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:59:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 02:59:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 02:59:39,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:59:39,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:59:39,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:59:39,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 02:59:39,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:59:39,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:59:39,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:59:39,315 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 02:59:39,402 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:59:39,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:59:39,680 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:59:39,748 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:59:39,749 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 02:59:39,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:59:39 BoogieIcfgContainer [2023-08-04 02:59:39,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:59:39,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:59:39,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:59:39,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:59:39,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:59:38" (1/3) ... [2023-08-04 02:59:39,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2270f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:59:39, skipping insertion in model container [2023-08-04 02:59:39,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:59:39" (2/3) ... [2023-08-04 02:59:39,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2270f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:59:39, skipping insertion in model container [2023-08-04 02:59:39,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:59:39" (3/3) ... [2023-08-04 02:59:39,758 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-min-max-inc.wvr_bound2.c [2023-08-04 02:59:39,779 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:59:39,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:59:39,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:59:39,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:59:39,854 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-04 02:59:39,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,184 INFO L124 PetriNetUnfolderBase]: 257/1473 cut-off events. [2023-08-04 02:59:40,184 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 02:59:40,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1473 events. 257/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9808 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 812. Up to 33 conditions per place. [2023-08-04 02:59:40,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:59:40,238 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 528 flow [2023-08-04 02:59:40,433 INFO L124 PetriNetUnfolderBase]: 257/1473 cut-off events. [2023-08-04 02:59:40,434 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 02:59:40,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1473 events. 257/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9808 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 812. Up to 33 conditions per place. [2023-08-04 02:59:40,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 8852 [2023-08-04 02:59:46,353 INFO L134 LiptonReduction]: Checked pairs total: 22347 [2023-08-04 02:59:46,353 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-04 02:59:46,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:59:46,372 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=true, 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;@5a68f0d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:59:46,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 02:59:46,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:59:46,377 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-08-04 02:59:46,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:59:46,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:46,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-04 02:59:46,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 02:59:46,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1046287122, now seen corresponding path program 1 times [2023-08-04 02:59:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960477946] [2023-08-04 02:59:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:46,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 02:59:46,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:46,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960477946] [2023-08-04 02:59:46,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960477946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:59:46,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:59:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:59:46,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160197068] [2023-08-04 02:59:46,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:59:46,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:59:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:59:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:59:46,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 418 [2023-08-04 02:59:46,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:46,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:46,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 418 [2023-08-04 02:59:46,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:48,434 INFO L124 PetriNetUnfolderBase]: 14199/19803 cut-off events. [2023-08-04 02:59:48,434 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2023-08-04 02:59:48,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40229 conditions, 19803 events. 14199/19803 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 110232 event pairs, 8953 based on Foata normal form. 0/14092 useless extension candidates. Maximal degree in co-relation 32394. Up to 18867 conditions per place. [2023-08-04 02:59:48,504 INFO L140 encePairwiseOnDemand]: 414/418 looper letters, 28 selfloop transitions, 2 changer transitions 33/68 dead transitions. [2023-08-04 02:59:48,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 322 flow [2023-08-04 02:59:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:59:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:59:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-04 02:59:48,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48883572567783096 [2023-08-04 02:59:48,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-04 02:59:48,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-04 02:59:48,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:48,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-04 02:59:48,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:48,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:48,534 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 204 flow. Second operand 3 states and 613 transitions. [2023-08-04 02:59:48,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 322 flow [2023-08-04 02:59:48,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 02:59:48,546 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 100 flow [2023-08-04 02:59:48,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-04 02:59:48,551 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 02:59:48,551 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 100 flow [2023-08-04 02:59:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:48,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:48,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:59:48,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 02:59:48,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1058460367, now seen corresponding path program 1 times [2023-08-04 02:59:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630608924] [2023-08-04 02:59:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:48,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:59:48,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:59:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:59:48,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:59:48,686 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:59:48,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 02:59:48,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 02:59:48,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 02:59:48,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 02:59:48,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 02:59:48,690 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 02:59:48,693 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:59:48,694 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:59:48,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:59:48,748 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-04 02:59:48,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:51,728 INFO L124 PetriNetUnfolderBase]: 5378/20024 cut-off events. [2023-08-04 02:59:51,728 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 02:59:51,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24409 conditions, 20024 events. 5378/20024 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 211862 event pairs, 81 based on Foata normal form. 0/17167 useless extension candidates. Maximal degree in co-relation 12037. Up to 1024 conditions per place. [2023-08-04 02:59:51,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:52,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:52,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:59:52,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:52,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:52,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 287 transitions, 718 flow [2023-08-04 02:59:54,353 INFO L124 PetriNetUnfolderBase]: 5378/20024 cut-off events. [2023-08-04 02:59:54,353 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 02:59:54,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24409 conditions, 20024 events. 5378/20024 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 211862 event pairs, 81 based on Foata normal form. 0/17167 useless extension candidates. Maximal degree in co-relation 12037. Up to 1024 conditions per place. [2023-08-04 02:59:54,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 23164 [2023-08-04 03:00:01,218 INFO L134 LiptonReduction]: Checked pairs total: 72224 [2023-08-04 03:00:01,218 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-04 03:00:01,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:00:01,221 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=true, 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;@5a68f0d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:00:01,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 03:00:01,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:00:01,229 INFO L124 PetriNetUnfolderBase]: 16/145 cut-off events. [2023-08-04 03:00:01,229 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:00:01,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:00:01,229 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 03:00:01,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 03:00:01,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:00:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash -301914681, now seen corresponding path program 1 times [2023-08-04 03:00:01,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:00:01,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867353136] [2023-08-04 03:00:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:00:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:00:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:00:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:00:01,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:00:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867353136] [2023-08-04 03:00:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867353136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:00:01,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:00:01,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:00:01,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185821585] [2023-08-04 03:00:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:00:01,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:00:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:00:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:00:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:00:01,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 502 [2023-08-04 03:00:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:00:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:00:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 502 [2023-08-04 03:00:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand