/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_safe016_power.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:28:30,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:28:30,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:28:30,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:28:30,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:28:30,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:28:30,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:28:30,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:28:30,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:28:30,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:28:30,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:28:30,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:28:30,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:28:30,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:28:30,636 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:28:30,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:28:30,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:28:30,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:28:30,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:28:30,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:28:30,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:28:30,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:28:30,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:28:30,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:28:30,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:28:30,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:28:30,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:28:30,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:28:30,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:28:30,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:28:30,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:28:30,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:28:30,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:28:30,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:28:30,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:28:30,642 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:28:30,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:28:30,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:28:30,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:28:30,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:28:30,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:28:30,904 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:28:30,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_power.opt_bound2.i [2023-08-03 18:28:32,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:28:32,358 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:28:32,359 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_power.opt_bound2.i [2023-08-03 18:28:32,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a682af3/23583f6f0a4748ac90e5f6d68d64b521/FLAG2eaf54afe [2023-08-03 18:28:32,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a682af3/23583f6f0a4748ac90e5f6d68d64b521 [2023-08-03 18:28:32,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:28:32,399 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:28:32,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:28:32,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:28:32,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:28:32,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4101f85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32, skipping insertion in model container [2023-08-03 18:28:32,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,457 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:28:32,584 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_safe016_power.opt_bound2.i[951,964] [2023-08-03 18:28:32,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:28:32,787 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:28:32,802 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_safe016_power.opt_bound2.i[951,964] [2023-08-03 18:28:32,814 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:28:32,815 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:28:32,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:28:32,905 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:28:32,905 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:28:32,911 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:28:32,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32 WrapperNode [2023-08-03 18:28:32,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:28:32,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:28:32,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:28:32,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:28:32,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,970 INFO L138 Inliner]: procedures = 177, calls = 91, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 216 [2023-08-03 18:28:32,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:28:32,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:28:32,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:28:32,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:28:32,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:32,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:28:33,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:28:33,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:28:33,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:28:33,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (1/1) ... [2023-08-03 18:28:33,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:28:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:28:33,098 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 18:28:33,122 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 18:28:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:28:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:28:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:28:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:28:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:28:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:28:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:28:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:28:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:28:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:28:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:28:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:28:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 18:28:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 18:28:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:28:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:28:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:28:33,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:28:33,138 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 18:28:33,313 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:28:33,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:28:33,754 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:28:33,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:28:33,971 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 18:28:33,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:28:33 BoogieIcfgContainer [2023-08-03 18:28:33,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:28:33,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:28:33,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:28:33,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:28:33,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:28:32" (1/3) ... [2023-08-03 18:28:33,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bafa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:28:33, skipping insertion in model container [2023-08-03 18:28:33,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:28:32" (2/3) ... [2023-08-03 18:28:33,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bafa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:28:33, skipping insertion in model container [2023-08-03 18:28:33,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:28:33" (3/3) ... [2023-08-03 18:28:33,980 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe016_power.opt_bound2.i [2023-08-03 18:28:33,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:28:33,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:28:33,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:28:33,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:28:34,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:28:34,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 172 transitions, 364 flow [2023-08-03 18:28:34,279 INFO L124 PetriNetUnfolderBase]: 62/931 cut-off events. [2023-08-03 18:28:34,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:28:34,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 931 events. 62/931 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5528 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 568. Up to 32 conditions per place. [2023-08-03 18:28:34,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 172 transitions, 364 flow [2023-08-03 18:28:34,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 158 transitions, 336 flow [2023-08-03 18:28:34,304 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:28:34,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 158 transitions, 336 flow [2023-08-03 18:28:34,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 158 transitions, 336 flow [2023-08-03 18:28:34,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 158 transitions, 336 flow [2023-08-03 18:28:34,442 INFO L124 PetriNetUnfolderBase]: 46/707 cut-off events. [2023-08-03 18:28:34,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:28:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 707 events. 46/707 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3814 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 456. Up to 32 conditions per place. [2023-08-03 18:28:34,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 3110 [2023-08-03 18:28:41,732 INFO L134 LiptonReduction]: Checked pairs total: 8515 [2023-08-03 18:28:41,732 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-03 18:28:41,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:28:41,747 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;@2525906, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:28:41,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:28:41,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:28:41,753 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-03 18:28:41,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:28:41,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:28:41,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:28:41,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:28:41,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:28:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1193666129, now seen corresponding path program 1 times [2023-08-03 18:28:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:28:41,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226887868] [2023-08-03 18:28:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:28:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:28:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:28:41,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:28:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:28:41,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:28:41,960 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:28:41,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 18:28:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 18:28:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:28:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:28:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:28:41,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:28:41,963 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 18:28:41,965 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:28:41,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:28:42,028 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:28:42,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 452 flow [2023-08-03 18:28:42,666 INFO L124 PetriNetUnfolderBase]: 282/4226 cut-off events. [2023-08-03 18:28:42,667 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:28:42,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 4226 events. 282/4226 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40195 event pairs, 0 based on Foata normal form. 0/3743 useless extension candidates. Maximal degree in co-relation 3075. Up to 162 conditions per place. [2023-08-03 18:28:42,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 202 transitions, 452 flow [2023-08-03 18:28:42,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 188 transitions, 424 flow [2023-08-03 18:28:42,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:28:42,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 188 transitions, 424 flow [2023-08-03 18:28:42,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 188 transitions, 424 flow [2023-08-03 18:28:42,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 188 transitions, 424 flow [2023-08-03 18:28:43,194 INFO L124 PetriNetUnfolderBase]: 201/3092 cut-off events. [2023-08-03 18:28:43,195 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:28:43,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 3092 events. 201/3092 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 27390 event pairs, 0 based on Foata normal form. 0/2771 useless extension candidates. Maximal degree in co-relation 2319. Up to 162 conditions per place. [2023-08-03 18:28:43,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 7784 [2023-08-03 18:28:52,502 INFO L134 LiptonReduction]: Checked pairs total: 28662 [2023-08-03 18:28:52,503 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-03 18:28:52,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:28:52,506 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;@2525906, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:28:52,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:28:52,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:28:52,513 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2023-08-03 18:28:52,513 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 18:28:52,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:28:52,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:28:52,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:28:52,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:28:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash 682483789, now seen corresponding path program 1 times [2023-08-03 18:28:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:28:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130193654] [2023-08-03 18:28:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:28:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:28:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:28:52,672 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 18:28:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:28:52,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130193654] [2023-08-03 18:28:52,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130193654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:28:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:28:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:28:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880421776] [2023-08-03 18:28:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:28:52,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:28:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:28:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:28:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:28:52,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 337 [2023-08-03 18:28:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 18:28:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:28:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 337 [2023-08-03 18:28:52,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand