/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/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:33:29,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:33:29,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:33:29,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:33:29,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:33:29,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:33:29,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:33:29,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:33:29,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:33:29,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:33:29,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:33:29,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:33:29,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:33:29,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:33:29,274 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:33:29,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:33:29,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:33:29,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:33:29,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:33:29,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:33:29,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:33:29,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:33:29,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:33:29,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:33:29,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:33:29,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:33:29,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:33:29,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:33:29,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:33:29,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:33:29,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:33:29,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:33:29,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:33:29,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:33:29,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:33:29,281 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:33:29,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:33:29,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:33:29,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:33:29,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:33:29,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:33:29,517 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:33:29,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 15:33:30,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:33:30,962 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:33:30,962 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 15:33:30,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19252706a/715e74ecf1c743c5a1508a20d17afb7e/FLAGe18088755 [2023-08-03 15:33:31,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19252706a/715e74ecf1c743c5a1508a20d17afb7e [2023-08-03 15:33:31,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:33:31,007 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:33:31,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:33:31,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:33:31,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:33:31,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166f4984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31, skipping insertion in model container [2023-08-03 15:33:31,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,072 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:33:31,457 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-03 15:33:31,467 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,468 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,468 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,469 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:33:31,508 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:33:31,525 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:33:31,527 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:33:31,544 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-03 15:33:31,547 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,547 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,548 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,548 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:33:31,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:33:31,610 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:33:31,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31 WrapperNode [2023-08-03 15:33:31,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:33:31,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:33:31,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:33:31,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:33:31,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,664 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-08-03 15:33:31,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:33:31,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:33:31,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:33:31,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:33:31,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:33:31,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:33:31,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:33:31,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:33:31,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (1/1) ... [2023-08-03 15:33:31,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:33:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:33:31,782 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 15:33:31,792 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 15:33:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:33:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 15:33:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-03 15:33:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-03 15:33:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:33:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 15:33:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:33:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:33:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:33:31,823 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 15:33:32,013 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:33:32,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:33:32,388 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:33:32,395 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:33:32,396 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-03 15:33:32,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:33:32 BoogieIcfgContainer [2023-08-03 15:33:32,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:33:32,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:33:32,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:33:32,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:33:32,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:33:31" (1/3) ... [2023-08-03 15:33:32,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e35b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:33:32, skipping insertion in model container [2023-08-03 15:33:32,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:33:31" (2/3) ... [2023-08-03 15:33:32,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e35b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:33:32, skipping insertion in model container [2023-08-03 15:33:32,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:33:32" (3/3) ... [2023-08-03 15:33:32,405 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 15:33:32,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:33:32,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:33:32,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:33:32,420 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:33:32,518 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 15:33:32,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,752 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-03 15:33:32,752 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 15:33:32,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-03 15:33:32,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,776 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:33:32,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 15:33:32,878 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-03 15:33:32,879 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 15:33:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-03 15:33:32,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-08-03 15:33:47,698 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 15:33:54,362 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 15:34:01,035 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 15:34:06,998 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 15:34:07,002 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-08-03 15:34:07,002 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-08-03 15:34:07,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:34:07,018 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;@1859a55c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:34:07,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 15:34:07,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:34:07,022 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-03 15:34:07,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:34:07,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:07,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 15:34:07,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:07,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1961127902, now seen corresponding path program 1 times [2023-08-03 15:34:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480991696] [2023-08-03 15:34:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:07,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:07,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480991696] [2023-08-03 15:34:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480991696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:34:07,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:34:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:34:07,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082254991] [2023-08-03 15:34:07,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:34:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:34:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:34:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:34:07,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-03 15:34:07,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 15:34:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-03 15:34:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:08,256 INFO L124 PetriNetUnfolderBase]: 5341/8583 cut-off events. [2023-08-03 15:34:08,257 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-03 15:34:08,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-08-03 15:34:08,385 INFO L140 encePairwiseOnDemand]: 535/558 looper letters, 60 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 15:34:08,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-08-03 15:34:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:34:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:34:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-03 15:34:08,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508363201911589 [2023-08-03 15:34:08,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-03 15:34:08,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-03 15:34:08,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:08,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-03 15:34:08,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 15:34:08,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 15:34:08,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 15:34:08,417 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 851 transitions. [2023-08-03 15:34:08,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-08-03 15:34:08,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:34:08,424 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 180 flow [2023-08-03 15:34:08,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-08-03 15:34:08,429 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 15:34:08,429 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 180 flow [2023-08-03 15:34:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 15:34:08,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:08,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:34:08,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:08,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1505272790, now seen corresponding path program 1 times [2023-08-03 15:34:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982929560] [2023-08-03 15:34:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:08,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982929560] [2023-08-03 15:34:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982929560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:34:08,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:34:08,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:34:08,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406615646] [2023-08-03 15:34:08,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:34:08,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:34:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:34:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:34:08,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-03 15:34:08,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 15:34:08,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:08,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-03 15:34:08,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:09,510 INFO L124 PetriNetUnfolderBase]: 5341/8585 cut-off events. [2023-08-03 15:34:09,511 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-03 15:34:09,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16483 conditions, 8585 events. 5341/8585 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51437 event pairs, 4400 based on Foata normal form. 2/6628 useless extension candidates. Maximal degree in co-relation 16464. Up to 7765 conditions per place. [2023-08-03 15:34:09,559 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 15:34:09,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 304 flow [2023-08-03 15:34:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:34:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:34:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-03 15:34:09,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49522102747909197 [2023-08-03 15:34:09,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-03 15:34:09,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-03 15:34:09,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:09,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-03 15:34:09,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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 15:34:09,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 15:34:09,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 15:34:09,575 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 180 flow. Second operand 3 states and 829 transitions. [2023-08-03 15:34:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 304 flow [2023-08-03 15:34:09,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:09,580 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 192 flow [2023-08-03 15:34:09,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-08-03 15:34:09,581 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-03 15:34:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 192 flow [2023-08-03 15:34:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 15:34:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:09,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:34:09,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:09,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1860116030, now seen corresponding path program 1 times [2023-08-03 15:34:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648499242] [2023-08-03 15:34:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:09,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660301904] [2023-08-03 15:34:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:09,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:09,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:09,653 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) [2023-08-03 15:34:09,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:34:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:09,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:34:09,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:09,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648499242] [2023-08-03 15:34:09,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660301904] [2023-08-03 15:34:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660301904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:09,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:09,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-03 15:34:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289644163] [2023-08-03 15:34:09,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:34:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:34:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:34:09,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 15:34:09,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 15:34:09,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:09,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 15:34:09,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:10,810 INFO L124 PetriNetUnfolderBase]: 5341/8591 cut-off events. [2023-08-03 15:34:10,810 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-03 15:34:10,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 8591 events. 5341/8591 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51480 event pairs, 4400 based on Foata normal form. 6/6638 useless extension candidates. Maximal degree in co-relation 16471. Up to 7765 conditions per place. [2023-08-03 15:34:10,851 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-08-03 15:34:10,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 332 flow [2023-08-03 15:34:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:34:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:34:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-08-03 15:34:10,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767025089605735 [2023-08-03 15:34:10,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-08-03 15:34:10,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-08-03 15:34:10,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:10,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-08-03 15:34:10,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 15:34:10,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 15:34:10,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 15:34:10,866 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 192 flow. Second operand 6 states and 1596 transitions. [2023-08-03 15:34:10,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 332 flow [2023-08-03 15:34:10,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:10,869 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 230 flow [2023-08-03 15:34:10,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-08-03 15:34:10,870 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-08-03 15:34:10,870 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 230 flow [2023-08-03 15:34:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 15:34:10,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:10,871 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:10,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:11,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:11,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 281984726, now seen corresponding path program 2 times [2023-08-03 15:34:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033448597] [2023-08-03 15:34:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:11,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:11,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672114052] [2023-08-03 15:34:11,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:34:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:11,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:34:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:34:11,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:34:11,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:11,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 15:34:11,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:11,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033448597] [2023-08-03 15:34:11,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672114052] [2023-08-03 15:34:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672114052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:11,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-03 15:34:11,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293944098] [2023-08-03 15:34:11,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:11,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 15:34:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 15:34:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-03 15:34:11,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 15:34:11,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 256.4166666666667) internal successors, (3077), 12 states have internal predecessors, (3077), 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 15:34:11,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:11,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 15:34:11,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:12,874 INFO L124 PetriNetUnfolderBase]: 5341/8603 cut-off events. [2023-08-03 15:34:12,874 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-08-03 15:34:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 8603 events. 5341/8603 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51562 event pairs, 4400 based on Foata normal form. 12/6656 useless extension candidates. Maximal degree in co-relation 16467. Up to 7765 conditions per place. [2023-08-03 15:34:12,911 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-03 15:34:12,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 406 flow [2023-08-03 15:34:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 15:34:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 15:34:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3135 transitions. [2023-08-03 15:34:12,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681899641577061 [2023-08-03 15:34:12,918 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3135 transitions. [2023-08-03 15:34:12,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3135 transitions. [2023-08-03 15:34:12,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:12,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3135 transitions. [2023-08-03 15:34:12,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 261.25) internal successors, (3135), 12 states have internal predecessors, (3135), 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 15:34:12,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 15:34:12,938 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 15:34:12,938 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 230 flow. Second operand 12 states and 3135 transitions. [2023-08-03 15:34:12,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 406 flow [2023-08-03 15:34:12,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 392 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:12,945 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 312 flow [2023-08-03 15:34:12,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2023-08-03 15:34:12,947 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2023-08-03 15:34:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 312 flow [2023-08-03 15:34:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.4166666666667) internal successors, (3077), 12 states have internal predecessors, (3077), 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 15:34:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:12,949 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:13,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 15:34:13,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:13,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1737594710, now seen corresponding path program 3 times [2023-08-03 15:34:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704694564] [2023-08-03 15:34:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:13,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82308870] [2023-08-03 15:34:13,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:34:13,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:13,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:13,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:34:13,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 15:34:13,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 15:34:13,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:13,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:34:13,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:34:13,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:34:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704694564] [2023-08-03 15:34:13,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82308870] [2023-08-03 15:34:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82308870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:13,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:13,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-03 15:34:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238656138] [2023-08-03 15:34:13,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:34:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:34:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:34:13,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 15:34:13,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 15:34:13,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:13,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 15:34:13,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:14,905 INFO L124 PetriNetUnfolderBase]: 5351/8689 cut-off events. [2023-08-03 15:34:14,905 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-08-03 15:34:14,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 8689 events. 5351/8689 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52052 event pairs, 4400 based on Foata normal form. 3/6764 useless extension candidates. Maximal degree in co-relation 16523. Up to 7759 conditions per place. [2023-08-03 15:34:14,942 INFO L140 encePairwiseOnDemand]: 554/558 looper letters, 103 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-08-03 15:34:14,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 879 flow [2023-08-03 15:34:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:34:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:34:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2023-08-03 15:34:14,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-03 15:34:14,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1602 transitions. [2023-08-03 15:34:14,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1602 transitions. [2023-08-03 15:34:14,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:14,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1602 transitions. [2023-08-03 15:34:14,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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 15:34:14,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 15:34:14,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 15:34:14,968 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 312 flow. Second operand 6 states and 1602 transitions. [2023-08-03 15:34:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 879 flow [2023-08-03 15:34:14,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 685 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-03 15:34:14,976 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 347 flow [2023-08-03 15:34:14,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-08-03 15:34:14,979 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2023-08-03 15:34:14,979 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 347 flow [2023-08-03 15:34:14,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 15:34:14,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:14,980 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 15:34:14,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:15,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:15,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1081566990, now seen corresponding path program 4 times [2023-08-03 15:34:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234847433] [2023-08-03 15:34:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:15,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:15,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116728746] [2023-08-03 15:34:15,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 15:34:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:15,706 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:34:15,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 15:34:18,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 15:34:18,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:18,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 15:34:18,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 15:34:18,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 15:34:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234847433] [2023-08-03 15:34:18,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116728746] [2023-08-03 15:34:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116728746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:18,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:18,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-03 15:34:18,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891805537] [2023-08-03 15:34:18,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:18,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 15:34:18,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 15:34:18,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-03 15:34:18,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 15:34:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 256.3333333333333) internal successors, (6152), 24 states have internal predecessors, (6152), 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 15:34:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 15:34:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:20,264 INFO L124 PetriNetUnfolderBase]: 5351/8737 cut-off events. [2023-08-03 15:34:20,264 INFO L125 PetriNetUnfolderBase]: For 3689/3689 co-relation queries the response was YES. [2023-08-03 15:34:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 8737 events. 5351/8737 cut-off events. For 3689/3689 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52001 event pairs, 4400 based on Foata normal form. 48/6857 useless extension candidates. Maximal degree in co-relation 16528. Up to 7771 conditions per place. [2023-08-03 15:34:20,298 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 61 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2023-08-03 15:34:20,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 589 flow [2023-08-03 15:34:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 15:34:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 15:34:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6213 transitions. [2023-08-03 15:34:20,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639336917562724 [2023-08-03 15:34:20,313 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6213 transitions. [2023-08-03 15:34:20,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6213 transitions. [2023-08-03 15:34:20,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:20,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6213 transitions. [2023-08-03 15:34:20,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 258.875) internal successors, (6213), 24 states have internal predecessors, (6213), 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 15:34:20,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 15:34:20,349 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 15:34:20,349 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 347 flow. Second operand 24 states and 6213 transitions. [2023-08-03 15:34:20,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 589 flow [2023-08-03 15:34:20,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 581 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:20,353 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 581 flow [2023-08-03 15:34:20,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=581, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-08-03 15:34:20,354 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2023-08-03 15:34:20,354 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 581 flow [2023-08-03 15:34:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 256.3333333333333) internal successors, (6152), 24 states have internal predecessors, (6152), 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 15:34:20,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:20,356 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 15:34:20,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:20,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:34:20,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1744029938, now seen corresponding path program 5 times [2023-08-03 15:34:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764597569] [2023-08-03 15:34:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:21,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:21,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020252319] [2023-08-03 15:34:21,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 15:34:21,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:21,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:34:21,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-03 15:48:03,808 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 15:48:03,808 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 15:48:04,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:05,017 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-03 15:48:05,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-03 15:48:05,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-03 15:48:05,056 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 15:48:05,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:05,057 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-03 15:48:05,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 15:48:05,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-03 15:48:05,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-03 15:48:05,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-03 15:48:05,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 15:48:05,058 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-03 15:48:05,062 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 15:48:05,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:05,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:05 BasicIcfg [2023-08-03 15:48:05,065 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:05,066 INFO L158 Benchmark]: Toolchain (without parser) took 874059.11ms. Allocated memory was 343.9MB in the beginning and 2.0GB in the end (delta: 1.6GB). Free memory was 290.9MB in the beginning and 1.3GB in the end (delta: -993.4MB). Peak memory consumption was 624.0MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,066 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 296.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:05,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.64ms. Allocated memory is still 343.9MB. Free memory was 290.5MB in the beginning and 258.8MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.56ms. Allocated memory is still 343.9MB. Free memory was 258.8MB in the beginning and 255.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,067 INFO L158 Benchmark]: Boogie Preprocessor took 76.32ms. Allocated memory was 343.9MB in the beginning and 459.3MB in the end (delta: 115.3MB). Free memory was 255.3MB in the beginning and 427.0MB in the end (delta: -171.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,067 INFO L158 Benchmark]: RCFGBuilder took 656.09ms. Allocated memory is still 459.3MB. Free memory was 427.0MB in the beginning and 398.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,068 INFO L158 Benchmark]: TraceAbstraction took 872665.78ms. Allocated memory was 459.3MB in the beginning and 2.0GB in the end (delta: 1.5GB). Free memory was 397.6MB in the beginning and 1.3GB in the end (delta: -886.7MB). Peak memory consumption was 613.3MB. Max. memory is 16.0GB. [2023-08-03 15:48:05,069 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 296.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 601.64ms. Allocated memory is still 343.9MB. Free memory was 290.5MB in the beginning and 258.8MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.56ms. Allocated memory is still 343.9MB. Free memory was 258.8MB in the beginning and 255.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 76.32ms. Allocated memory was 343.9MB in the beginning and 459.3MB in the end (delta: 115.3MB). Free memory was 255.3MB in the beginning and 427.0MB in the end (delta: -171.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. * RCFGBuilder took 656.09ms. Allocated memory is still 459.3MB. Free memory was 427.0MB in the beginning and 398.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 872665.78ms. Allocated memory was 459.3MB in the beginning and 2.0GB in the end (delta: 1.5GB). Free memory was 397.6MB in the beginning and 1.3GB in the end (delta: -886.7MB). Peak memory consumption was 613.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.2s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 872.5s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 34.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1262 IncrementalHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 2 mSDtfsCounter, 1262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown