/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:40:04,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:40:04,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:40:04,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:40:04,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:40:04,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:40:04,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:40:04,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:40:04,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:40:04,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:40:04,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:40:04,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:40:04,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:40:04,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:40:04,672 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:40:04,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:40:04,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:40:04,672 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:40:04,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:40:04,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:40:04,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:40:04,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:40:04,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:40:04,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:40:04,674 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:40:04,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:40:04,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:40:04,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:40:04,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:40:04,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:40:04,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:40:04,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:40:04,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:40:04,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:40:04,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:40:04,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:40:04,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:40:04,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:40:04,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:40:04,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:40:04,677 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:40:04,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:40:04,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:40:04,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:40:04,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:40:04,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:40:04,901 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:40:04,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_tso.oepc_bound2.i [2023-08-04 05:40:05,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:40:06,153 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:40:06,154 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_tso.oepc_bound2.i [2023-08-04 05:40:06,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e46553d/bcb212f7ab674522beacda1a9126704e/FLAG30457a48a [2023-08-04 05:40:06,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e46553d/bcb212f7ab674522beacda1a9126704e [2023-08-04 05:40:06,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:40:06,185 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:40:06,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:40:06,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:40:06,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:40:06,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39beacef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06, skipping insertion in model container [2023-08-04 05:40:06,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,229 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:40:06,339 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_tso.oepc_bound2.i[949,962] [2023-08-04 05:40:06,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:40:06,505 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:40:06,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_tso.oepc_bound2.i[949,962] [2023-08-04 05:40:06,518 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:40:06,519 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:40:06,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:40:06,588 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:40:06,588 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:40:06,594 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:40:06,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06 WrapperNode [2023-08-04 05:40:06,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:40:06,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:40:06,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:40:06,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:40:06,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,647 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 295 [2023-08-04 05:40:06,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:40:06,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:40:06,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:40:06,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:40:06,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:40:06,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:40:06,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:40:06,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:40:06,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (1/1) ... [2023-08-04 05:40:06,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:40:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:40:06,742 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 05:40:06,755 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 05:40:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:40:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:40:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:40:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:40:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:40:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:40:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:40:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:40:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:40:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:40:06,770 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 05:40:06,882 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:40:06,883 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:40:07,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:40:07,469 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:40:07,470 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:40:07,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:40:07 BoogieIcfgContainer [2023-08-04 05:40:07,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:40:07,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:40:07,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:40:07,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:40:07,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:40:06" (1/3) ... [2023-08-04 05:40:07,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c03a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:40:07, skipping insertion in model container [2023-08-04 05:40:07,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:40:06" (2/3) ... [2023-08-04 05:40:07,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c03a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:40:07, skipping insertion in model container [2023-08-04 05:40:07,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:40:07" (3/3) ... [2023-08-04 05:40:07,479 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix014_tso.oepc_bound2.i [2023-08-04 05:40:07,484 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:40:07,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:40:07,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 05:40:07,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:40:07,539 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:40:07,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 180 transitions, 380 flow [2023-08-04 05:40:07,728 INFO L124 PetriNetUnfolderBase]: 62/959 cut-off events. [2023-08-04 05:40:07,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:07,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 959 events. 62/959 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5839 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 580. Up to 32 conditions per place. [2023-08-04 05:40:07,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 180 transitions, 380 flow [2023-08-04 05:40:07,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 179 transitions, 376 flow [2023-08-04 05:40:07,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:40:07,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 179 transitions, 376 flow [2023-08-04 05:40:07,756 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 179 transitions, 376 flow [2023-08-04 05:40:07,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 179 transitions, 376 flow [2023-08-04 05:40:07,882 INFO L124 PetriNetUnfolderBase]: 62/958 cut-off events. [2023-08-04 05:40:07,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:07,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 958 events. 62/958 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5835 event pairs, 0 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-04 05:40:07,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 4786 [2023-08-04 05:40:13,310 INFO L134 LiptonReduction]: Checked pairs total: 14449 [2023-08-04 05:40:13,310 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-04 05:40:13,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:40:13,323 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;@2ab3536f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:40:13,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-04 05:40:13,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:40:13,326 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 05:40:13,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:13,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:13,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:40:13,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 05:40:13,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 833765568, now seen corresponding path program 1 times [2023-08-04 05:40:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481957836] [2023-08-04 05:40:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:40:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:40:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481957836] [2023-08-04 05:40:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481957836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:40:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:40:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:40:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399350604] [2023-08-04 05:40:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:40:13,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:40:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:40:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:40:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:40:13,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 333 [2023-08-04 05:40:13,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 05:40:13,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:40:13,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 333 [2023-08-04 05:40:13,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:40:16,865 INFO L124 PetriNetUnfolderBase]: 18795/26686 cut-off events. [2023-08-04 05:40:16,865 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-04 05:40:16,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53575 conditions, 26686 events. 18795/26686 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 168065 event pairs, 17000 based on Foata normal form. 0/21962 useless extension candidates. Maximal degree in co-relation 53561. Up to 25968 conditions per place. [2023-08-04 05:40:17,024 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 37 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:40:17,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 192 flow [2023-08-04 05:40:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:40:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:40:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-04 05:40:17,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005005005005005 [2023-08-04 05:40:17,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-04 05:40:17,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-04 05:40:17,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:40:17,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-04 05:40:17,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 05:40:17,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 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 05:40:17,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 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 05:40:17,068 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 104 flow. Second operand 3 states and 500 transitions. [2023-08-04 05:40:17,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 192 flow [2023-08-04 05:40:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:40:17,073 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 112 flow [2023-08-04 05:40:17,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 05:40:17,077 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-04 05:40:17,078 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 112 flow [2023-08-04 05:40:17,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 05:40:17,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:17,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:40:17,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:40:17,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 05:40:17,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash -437176484, now seen corresponding path program 1 times [2023-08-04 05:40:17,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:17,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031775830] [2023-08-04 05:40:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:17,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:40:17,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:40:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031775830] [2023-08-04 05:40:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031775830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:40:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988288898] [2023-08-04 05:40:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:17,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:40:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:40:17,153 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) [2023-08-04 05:40:17,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:40:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:17,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:40:17,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:40:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:40:17,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:40:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:40:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988288898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:40:17,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:40:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:40:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263190641] [2023-08-04 05:40:17,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:40:17,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:40:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:40:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:40:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:40:17,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 333 [2023-08-04 05:40:17,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 05:40:17,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:40:17,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 333 [2023-08-04 05:40:17,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:40:17,365 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:40:17,367 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 05:40:17,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 21 events. 6/21 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 2 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 05:40:17,370 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:40:17,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-04 05:40:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:40:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:40:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 620 transitions. [2023-08-04 05:40:17,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2023-08-04 05:40:17,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 620 transitions. [2023-08-04 05:40:17,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 620 transitions. [2023-08-04 05:40:17,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:40:17,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 620 transitions. [2023-08-04 05:40:17,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 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 05:40:17,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 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 05:40:17,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 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 05:40:17,381 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 112 flow. Second operand 4 states and 620 transitions. [2023-08-04 05:40:17,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-04 05:40:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 05:40:17,381 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 05:40:17,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 05:40:17,382 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -35 predicate places. [2023-08-04 05:40:17,383 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 05:40:17,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 05:40:17,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-04 05:40:17,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-04 05:40:17,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-04 05:40:17,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-04 05:40:17,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-04 05:40:17,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:40:17,590 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 [2023-08-04 05:40:17,591 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 05:40:17,592 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 05:40:17,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 180 transitions, 380 flow [2023-08-04 05:40:17,729 INFO L124 PetriNetUnfolderBase]: 62/959 cut-off events. [2023-08-04 05:40:17,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:17,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 959 events. 62/959 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5839 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 580. Up to 32 conditions per place. [2023-08-04 05:40:17,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 180 transitions, 380 flow [2023-08-04 05:40:17,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 149 transitions, 318 flow [2023-08-04 05:40:17,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:40:17,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 149 transitions, 318 flow [2023-08-04 05:40:17,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 149 transitions, 318 flow [2023-08-04 05:40:17,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 149 transitions, 318 flow [2023-08-04 05:40:17,761 INFO L124 PetriNetUnfolderBase]: 14/463 cut-off events. [2023-08-04 05:40:17,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 463 events. 14/463 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2065 event pairs, 0 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-08-04 05:40:17,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 2816 [2023-08-04 05:40:21,807 INFO L134 LiptonReduction]: Checked pairs total: 8198 [2023-08-04 05:40:21,807 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-04 05:40:21,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:40:21,811 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;@2ab3536f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:40:21,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:40:21,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:40:21,814 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-08-04 05:40:21,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:21,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:21,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:40:21,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:40:21,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -680971445, now seen corresponding path program 1 times [2023-08-04 05:40:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768627159] [2023-08-04 05:40:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:40:21,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:40:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:40:21,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:40:21,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:40:21,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:40:21,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:40:21,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:40:21,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:40:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 05:40:21,882 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:40:21,883 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:40:21,883 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:40:21,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:40:21,913 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:40:21,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 216 transitions, 480 flow [2023-08-04 05:40:22,409 INFO L124 PetriNetUnfolderBase]: 282/4372 cut-off events. [2023-08-04 05:40:22,409 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:40:22,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 4372 events. 282/4372 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42406 event pairs, 0 based on Foata normal form. 0/3865 useless extension candidates. Maximal degree in co-relation 3167. Up to 162 conditions per place. [2023-08-04 05:40:22,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 216 transitions, 480 flow [2023-08-04 05:40:22,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 215 transitions, 474 flow [2023-08-04 05:40:22,428 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:40:22,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 215 transitions, 474 flow [2023-08-04 05:40:22,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 215 transitions, 474 flow [2023-08-04 05:40:22,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 215 transitions, 474 flow [2023-08-04 05:40:22,801 INFO L124 PetriNetUnfolderBase]: 282/4371 cut-off events. [2023-08-04 05:40:22,801 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 05:40:22,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 4371 events. 282/4371 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42386 event pairs, 0 based on Foata normal form. 0/3864 useless extension candidates. Maximal degree in co-relation 3164. Up to 162 conditions per place. [2023-08-04 05:40:22,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 11872 [2023-08-04 05:40:27,947 INFO L134 LiptonReduction]: Checked pairs total: 41132 [2023-08-04 05:40:27,947 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-04 05:40:27,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:40:27,951 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;@2ab3536f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:40:27,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-04 05:40:27,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:40:27,953 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 05:40:27,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:27,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:27,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:40:27,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-04 05:40:27,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1339831385, now seen corresponding path program 1 times [2023-08-04 05:40:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:27,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396556072] [2023-08-04 05:40:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:40:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:40:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396556072] [2023-08-04 05:40:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396556072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:40:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:40:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:40:28,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338235352] [2023-08-04 05:40:28,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:40:28,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:40:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:40:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:40:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:40:28,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 375 [2023-08-04 05:40:28,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 05:40:28,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:40:28,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 375 [2023-08-04 05:40:28,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand