/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:02:59,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:02:59,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:02:59,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:02:59,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:02:59,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:02:59,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:02:59,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:02:59,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:02:59,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:02:59,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:02:59,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:02:59,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:02:59,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:02:59,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:02:59,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:02:59,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:02:59,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:02:59,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:02:59,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:02:59,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:02:59,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:02:59,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:02:59,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:02:59,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:02:59,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:02:59,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:02:59,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:02:59,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:02:59,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-12 19:02:59,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:02:59,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:02:59,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:02:59,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 19:02:59,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:02:59,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:02:59,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:02:59,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:02:59,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:02:59,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:02:59,800 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:02:59,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:02:59,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:02:59,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:02:59,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:02:59,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:02:59,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:02:59,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:02:59,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:03:00,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:03:00,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:03:00,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:03:00,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:03:00,157 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:03:00,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 19:03:01,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:03:01,503 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:03:01,503 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 19:03:01,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc09b25ad/ac9aa10a6be74eadb6420e5772a1f31c/FLAGe2d64f0cb [2022-12-12 19:03:01,533 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc09b25ad/ac9aa10a6be74eadb6420e5772a1f31c [2022-12-12 19:03:01,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:03:01,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:03:01,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:01,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:03:01,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:03:01,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:01,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1c524f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01, skipping insertion in model container [2022-12-12 19:03:01,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:01,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:03:01,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:03:01,696 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-12-12 19:03:01,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:01,842 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:03:01,861 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-12-12 19:03:01,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:01,933 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:03:01,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01 WrapperNode [2022-12-12 19:03:01,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:01,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:01,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:03:01,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:03:01,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:01,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:01,997 INFO L138 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-12-12 19:03:01,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:01,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:03:01,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:03:01,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:03:02,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:03:02,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:03:02,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:03:02,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:03:02,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (1/1) ... [2022-12-12 19:03:02,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:03:02,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:03:02,065 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) [2022-12-12 19:03:02,068 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 [2022-12-12 19:03:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-12 19:03:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:03:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:03:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:03:02,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:03:02,249 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:03:02,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:03:02,435 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:03:02,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:03:02,440 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-12 19:03:02,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:02 BoogieIcfgContainer [2022-12-12 19:03:02,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:03:02,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:03:02,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:03:02,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:03:02,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:03:01" (1/3) ... [2022-12-12 19:03:02,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d09092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:02, skipping insertion in model container [2022-12-12 19:03:02,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:01" (2/3) ... [2022-12-12 19:03:02,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d09092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:02, skipping insertion in model container [2022-12-12 19:03:02,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:02" (3/3) ... [2022-12-12 19:03:02,455 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 19:03:02,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:03:02,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:03:02,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:03:02,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 19:03:02,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 139 flow [2022-12-12 19:03:02,635 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-12-12 19:03:02,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 66 events. 4/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-12 19:03:02,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 139 flow [2022-12-12 19:03:02,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 62 transitions, 127 flow [2022-12-12 19:03:02,645 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:03:02,673 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 62 transitions, 127 flow [2022-12-12 19:03:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 127 flow [2022-12-12 19:03:02,706 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-12-12 19:03:02,707 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:02,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2022-12-12 19:03:02,710 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 62 transitions, 127 flow [2022-12-12 19:03:02,710 INFO L226 LiptonReduction]: Number of co-enabled transitions 322 [2022-12-12 19:03:05,851 INFO L241 LiptonReduction]: Total number of compositions: 56 [2022-12-12 19:03:05,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:03:05,869 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=false, 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;@408240cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:03:05,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 19:03:05,872 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-12 19:03:05,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:05,873 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:05,873 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 19:03:05,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-12 19:03:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash 8253240, now seen corresponding path program 1 times [2022-12-12 19:03:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:05,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59220135] [2022-12-12 19:03:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59220135] [2022-12-12 19:03:06,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59220135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:06,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:06,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:03:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310497348] [2022-12-12 19:03:06,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:03:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:03:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:03:06,171 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 12 [2022-12-12 19:03:06,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-12-12 19:03:06,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:06,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 12 [2022-12-12 19:03:06,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:06,211 INFO L130 PetriNetUnfolder]: 13/29 cut-off events. [2022-12-12 19:03:06,211 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 29 events. 13/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 64 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 53. Up to 20 conditions per place. [2022-12-12 19:03:06,213 INFO L137 encePairwiseOnDemand]: 10/12 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2022-12-12 19:03:06,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 17 transitions, 69 flow [2022-12-12 19:03:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:03:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:03:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-12 19:03:06,222 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-12 19:03:06,225 INFO L295 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2022-12-12 19:03:06,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 17 transitions, 69 flow [2022-12-12 19:03:06,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 19:03:06,227 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 19:03:06,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-12-12 19:03:06,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-12-12 19:03:06,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-12 19:03:06,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-12 19:03:06,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:03:06,231 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 19:03:06,244 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:03:06,244 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:03:06,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:03:06 BasicIcfg [2022-12-12 19:03:06,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:03:06,253 INFO L158 Benchmark]: Toolchain (without parser) took 4716.45ms. Allocated memory was 210.8MB in the beginning and 260.0MB in the end (delta: 49.3MB). Free memory was 184.7MB in the beginning and 115.1MB in the end (delta: 69.6MB). Peak memory consumption was 119.9MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,253 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 187.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:03:06,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.22ms. Allocated memory is still 210.8MB. Free memory was 184.7MB in the beginning and 165.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.65ms. Allocated memory is still 210.8MB. Free memory was 165.9MB in the beginning and 163.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,257 INFO L158 Benchmark]: Boogie Preprocessor took 34.06ms. Allocated memory is still 210.8MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,257 INFO L158 Benchmark]: RCFGBuilder took 409.70ms. Allocated memory is still 210.8MB. Free memory was 162.2MB in the beginning and 149.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,259 INFO L158 Benchmark]: TraceAbstraction took 3808.01ms. Allocated memory was 210.8MB in the beginning and 260.0MB in the end (delta: 49.3MB). Free memory was 148.0MB in the beginning and 115.1MB in the end (delta: 32.9MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. [2022-12-12 19:03:06,264 INFO L339 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 210.8MB. Free memory is still 187.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 398.22ms. Allocated memory is still 210.8MB. Free memory was 184.7MB in the beginning and 165.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.65ms. Allocated memory is still 210.8MB. Free memory was 165.9MB in the beginning and 163.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.06ms. Allocated memory is still 210.8MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 409.70ms. Allocated memory is still 210.8MB. Free memory was 162.2MB in the beginning and 149.1MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3808.01ms. Allocated memory was 210.8MB in the beginning and 260.0MB in the end (delta: 49.3MB). Free memory was 148.0MB in the beginning and 115.1MB in the end (delta: 32.9MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 63 PlacesBefore, 15 PlacesAfterwards, 62 TransitionsBefore, 12 TransitionsAfterwards, 322 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 24 ConcurrentYvCompositions, 2 ChoiceCompositions, 56 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 258, independent: 258, independent conditional: 258, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 258, independent: 258, independent conditional: 0, independent unconditional: 258, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 258, independent: 258, independent conditional: 0, independent unconditional: 258, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 258, independent: 258, independent conditional: 0, independent unconditional: 258, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 217, independent: 217, independent conditional: 0, independent unconditional: 217, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 217, independent: 217, independent conditional: 0, independent unconditional: 217, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 258, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 217, unknown conditional: 0, unknown unconditional: 217] , Statistics on independence cache: Total cache size (in pairs): 452, Positive cache size: 452, Positive conditional cache size: 0, Positive unconditional cache size: 452, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 locations, 3 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: 3.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 69 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 19:03:06,287 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 Received shutdown request...