/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:20:38,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:20:38,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:20:38,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:20:38,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:20:38,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:20:38,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:20:38,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:20:38,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:20:38,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:20:38,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:20:38,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:20:38,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:20:38,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:20:38,236 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:20:38,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:20:38,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:20:38,237 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:20:38,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:20:38,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:20:38,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:20:38,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:20:38,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:20:38,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:20:38,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:20:38,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:20:38,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:20:38,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:20:38,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:20:38,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:20:38,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:20:38,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:20:38,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:20:38,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:20:38,242 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:20:38,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:20:38,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:20:38,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:20:38,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:20:38,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:20:38,462 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:20:38,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:20:39,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:20:39,701 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:20:39,701 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:20:39,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7053804/f39f06f0e1664c52a874e2aa96351573/FLAG184294113 [2023-08-03 17:20:39,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7053804/f39f06f0e1664c52a874e2aa96351573 [2023-08-03 17:20:39,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:20:39,730 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:20:39,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:20:39,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:20:39,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:20:39,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:20:39" (1/1) ... [2023-08-03 17:20:39,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b16ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:39, skipping insertion in model container [2023-08-03 17:20:39,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:20:39" (1/1) ... [2023-08-03 17:20:39,780 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:20:39,900 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_mix027_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-03 17:20:40,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:20:40,082 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:20:40,093 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_mix027_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-03 17:20:40,108 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:20:40,110 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:20:40,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:20:40,195 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:20:40,195 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:20:40,201 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:20:40,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40 WrapperNode [2023-08-03 17:20:40,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:20:40,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:20:40,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:20:40,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:20:40,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,276 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-03 17:20:40,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:20:40,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:20:40,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:20:40,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:20:40,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:20:40,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:20:40,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:20:40,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:20:40,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (1/1) ... [2023-08-03 17:20:40,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:20:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:20:40,344 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) [2023-08-03 17:20:40,368 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 [2023-08-03 17:20:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:20:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:20:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:20:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:20:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:20:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:20:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:20:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:20:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:20:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:20:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:20:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:20:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:20:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:20:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:20:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:20:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:20:40,386 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:20:40,510 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:20:40,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:20:40,739 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:20:40,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:20:40,817 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:20:40,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:20:40 BoogieIcfgContainer [2023-08-03 17:20:40,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:20:40,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:20:40,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:20:40,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:20:40,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:20:39" (1/3) ... [2023-08-03 17:20:40,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d947849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:20:40, skipping insertion in model container [2023-08-03 17:20:40,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:20:40" (2/3) ... [2023-08-03 17:20:40,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d947849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:20:40, skipping insertion in model container [2023-08-03 17:20:40,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:20:40" (3/3) ... [2023-08-03 17:20:40,825 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix027_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:20:40,832 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:20:40,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:20:40,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:20:40,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:20:40,905 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:20:40,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,168 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-03 17:20:41,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:20:41,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5807 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-03 17:20:41,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:20:41,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-03 17:20:41,306 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-03 17:20:41,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:20:41,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5807 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-03 17:20:41,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 4020 [2023-08-03 17:20:44,984 INFO L134 LiptonReduction]: Checked pairs total: 10630 [2023-08-03 17:20:44,985 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-03 17:20:44,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:20:45,001 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;@7477d6b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:20:45,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:20:45,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:20:45,006 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-03 17:20:45,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:20:45,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:20:45,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:20:45,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:20:45,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:20:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1865072372, now seen corresponding path program 1 times [2023-08-03 17:20:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:20:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550416942] [2023-08-03 17:20:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:20:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:20:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:20:45,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:20:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:20:45,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:20:45,158 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:20:45,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:20:45,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:20:45,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:20:45,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:20:45,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:20:45,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:20:45,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:20:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:20:45,163 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 17:20:45,170 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:20:45,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:20:45,215 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:20:45,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:45,703 INFO L124 PetriNetUnfolderBase]: 282/4332 cut-off events. [2023-08-03 17:20:45,704 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:20:45,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4332 events. 282/4332 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42155 event pairs, 0 based on Foata normal form. 0/3831 useless extension candidates. Maximal degree in co-relation 3127. Up to 162 conditions per place. [2023-08-03 17:20:45,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:45,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:45,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:20:45,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:45,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:20:46,273 INFO L124 PetriNetUnfolderBase]: 282/4332 cut-off events. [2023-08-03 17:20:46,273 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:20:46,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4332 events. 282/4332 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42155 event pairs, 0 based on Foata normal form. 0/3831 useless extension candidates. Maximal degree in co-relation 3127. Up to 162 conditions per place. [2023-08-03 17:20:46,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 9816 [2023-08-03 17:20:49,989 INFO L134 LiptonReduction]: Checked pairs total: 27231 [2023-08-03 17:20:49,989 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-03 17:20:49,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:20:49,992 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;@7477d6b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:20:49,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:20:49,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:20:49,996 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 17:20:49,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:20:49,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:20:49,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:20:49,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 17:20:49,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:20:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -385924760, now seen corresponding path program 1 times [2023-08-03 17:20:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:20:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725638553] [2023-08-03 17:20:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:20:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:20:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:20:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:20:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:20:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725638553] [2023-08-03 17:20:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725638553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:20:50,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:20:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:20:50,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878256930] [2023-08-03 17:20:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:20:50,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:20:50,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:20:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:20:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:20:50,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 327 [2023-08-03 17:20:50,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-03 17:20:50,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:20:50,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 327 [2023-08-03 17:20:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand