/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/weaver/popl20-more-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:13:01,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:13:01,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:13:01,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:13:01,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:13:02,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:13:02,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:13:02,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:13:02,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:13:02,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:13:02,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:13:02,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:13:02,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:13:02,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:13:02,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:13:02,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:13:02,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:13:02,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:13:02,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:13:02,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:13:02,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:13:02,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:13:02,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:13:02,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:13:02,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:13:02,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:13:02,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:13:02,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:13:02,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:13:02,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:13:02,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:13:02,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:13:02,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:13:02,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:13:02,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:13:02,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:13:02,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:13:02,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:13:02,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:13:02,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:13:02,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:13:02,044 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 20:13:02,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:13:02,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:13:02,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:13:02,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:13:02,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:13:02,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:13:02,073 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:13:02,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:13:02,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:13:02,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:13:02,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:13:02,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:13:02,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:13:02,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:13:02,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:13:02,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:13:02,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:13:02,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:13:02,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:13:02,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:13:02,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:13:02,344 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:13:02,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2022-12-12 20:13:03,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:13:03,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:13:03,472 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2022-12-12 20:13:03,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42eaacce/94173dd3e74d488586b7a7f24ee79c33/FLAGfcf3fee37 [2022-12-12 20:13:03,490 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42eaacce/94173dd3e74d488586b7a7f24ee79c33 [2022-12-12 20:13:03,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:13:03,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:13:03,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:13:03,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:13:03,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:13:03,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29204d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03, skipping insertion in model container [2022-12-12 20:13:03,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:13:03,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:13:03,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,678 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-12-12 20:13:03,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:13:03,701 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:13:03,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:13:03,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:13:03,734 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-12-12 20:13:03,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:13:03,753 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:13:03,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03 WrapperNode [2022-12-12 20:13:03,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:13:03,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:13:03,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:13:03,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:13:03,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,811 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 280 [2022-12-12 20:13:03,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:13:03,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:13:03,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:13:03,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:13:03,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:13:03,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:13:03,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:13:03,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:13:03,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (1/1) ... [2022-12-12 20:13:03,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:13:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:03,902 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 20:13:03,981 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 20:13:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:13:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:13:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:13:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 20:13:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:13:04,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:13:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:13:04,007 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 20:13:04,089 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:13:04,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:13:04,476 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:13:04,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:13:04,669 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-12 20:13:04,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:13:04 BoogieIcfgContainer [2022-12-12 20:13:04,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:13:04,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:13:04,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:13:04,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:13:04,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:13:03" (1/3) ... [2022-12-12 20:13:04,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948c317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:13:04, skipping insertion in model container [2022-12-12 20:13:04,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:13:03" (2/3) ... [2022-12-12 20:13:04,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948c317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:13:04, skipping insertion in model container [2022-12-12 20:13:04,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:13:04" (3/3) ... [2022-12-12 20:13:04,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2022-12-12 20:13:04,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:13:04,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:13:04,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:13:04,744 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 20:13:04,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 179 transitions, 382 flow [2022-12-12 20:13:04,863 INFO L130 PetriNetUnfolder]: 16/176 cut-off events. [2022-12-12 20:13:04,863 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:13:04,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 16/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 108 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-12-12 20:13:04,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 179 transitions, 382 flow [2022-12-12 20:13:04,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 166 transitions, 350 flow [2022-12-12 20:13:04,879 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:13:04,902 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 166 transitions, 350 flow [2022-12-12 20:13:04,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 166 transitions, 350 flow [2022-12-12 20:13:04,932 INFO L130 PetriNetUnfolder]: 16/166 cut-off events. [2022-12-12 20:13:04,933 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:13:04,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 16/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 107 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-12-12 20:13:04,936 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 166 transitions, 350 flow [2022-12-12 20:13:04,936 INFO L226 LiptonReduction]: Number of co-enabled transitions 1518 [2022-12-12 20:13:09,560 INFO L241 LiptonReduction]: Total number of compositions: 138 [2022-12-12 20:13:09,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:13:09,575 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;@5ee4f625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:13:09,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 20:13:09,583 INFO L130 PetriNetUnfolder]: 5/27 cut-off events. [2022-12-12 20:13:09,583 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:13:09,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:09,583 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:09,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash 597230375, now seen corresponding path program 1 times [2022-12-12 20:13:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:09,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006333541] [2022-12-12 20:13:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:09,987 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 20:13:09,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:09,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006333541] [2022-12-12 20:13:09,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006333541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:13:09,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:13:09,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 20:13:09,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486242143] [2022-12-12 20:13:09,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:13:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:13:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:13:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 20:13:10,016 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-12 20:13:10,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 20:13:10,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:10,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-12 20:13:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:10,192 INFO L130 PetriNetUnfolder]: 620/871 cut-off events. [2022-12-12 20:13:10,192 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-12 20:13:10,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816 conditions, 871 events. 620/871 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3409 event pairs, 95 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 1365. Up to 688 conditions per place. [2022-12-12 20:13:10,201 INFO L137 encePairwiseOnDemand]: 23/28 looper letters, 38 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2022-12-12 20:13:10,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 211 flow [2022-12-12 20:13:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:13:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:13:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2022-12-12 20:13:10,210 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2022-12-12 20:13:10,213 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-12-12 20:13:10,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 46 transitions, 211 flow [2022-12-12 20:13:10,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 45 transitions, 204 flow [2022-12-12 20:13:10,218 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 45 transitions, 204 flow [2022-12-12 20:13:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 20:13:10,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:10,219 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:13:10,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1243665619, now seen corresponding path program 1 times [2022-12-12 20:13:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:10,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585281842] [2022-12-12 20:13:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:10,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585281842] [2022-12-12 20:13:10,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585281842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:13:10,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:13:10,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:13:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564762922] [2022-12-12 20:13:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:13:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:13:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:13:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:13:10,406 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 20:13:10,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 45 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 20:13:10,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:10,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 20:13:10,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:10,537 INFO L130 PetriNetUnfolder]: 643/924 cut-off events. [2022-12-12 20:13:10,537 INFO L131 PetriNetUnfolder]: For 86/106 co-relation queries the response was YES. [2022-12-12 20:13:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 924 events. 643/924 cut-off events. For 86/106 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3797 event pairs, 154 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 2117. Up to 911 conditions per place. [2022-12-12 20:13:10,543 INFO L137 encePairwiseOnDemand]: 23/28 looper letters, 41 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2022-12-12 20:13:10,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 308 flow [2022-12-12 20:13:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:13:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:13:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2022-12-12 20:13:10,544 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2022-12-12 20:13:10,545 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-12-12 20:13:10,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 48 transitions, 308 flow [2022-12-12 20:13:10,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 47 transitions, 302 flow [2022-12-12 20:13:10,549 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 47 transitions, 302 flow [2022-12-12 20:13:10,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 20:13:10,550 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:10,550 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:10,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:13:10,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash -713380074, now seen corresponding path program 1 times [2022-12-12 20:13:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260578091] [2022-12-12 20:13:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260578091] [2022-12-12 20:13:10,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260578091] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560283056] [2022-12-12 20:13:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:10,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:10,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:10,660 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) [2022-12-12 20:13:10,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 20:13:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:10,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:13:10,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:10,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:10,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560283056] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:10,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:13:10,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-12-12 20:13:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108271098] [2022-12-12 20:13:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:13:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:13:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:13:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 20:13:10,894 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 20:13:10,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 47 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 20:13:10,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:10,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 20:13:10,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:11,111 INFO L130 PetriNetUnfolder]: 895/1318 cut-off events. [2022-12-12 20:13:11,111 INFO L131 PetriNetUnfolder]: For 860/860 co-relation queries the response was YES. [2022-12-12 20:13:11,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 1318 events. 895/1318 cut-off events. For 860/860 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4965 event pairs, 78 based on Foata normal form. 0/1040 useless extension candidates. Maximal degree in co-relation 3720. Up to 1167 conditions per place. [2022-12-12 20:13:11,119 INFO L137 encePairwiseOnDemand]: 18/28 looper letters, 89 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2022-12-12 20:13:11,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 109 transitions, 921 flow [2022-12-12 20:13:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 20:13:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 20:13:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2022-12-12 20:13:11,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34375 [2022-12-12 20:13:11,121 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2022-12-12 20:13:11,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 109 transitions, 921 flow [2022-12-12 20:13:11,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 109 transitions, 921 flow [2022-12-12 20:13:11,127 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 109 transitions, 921 flow [2022-12-12 20:13:11,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 20:13:11,127 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:11,128 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:11,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 20:13:11,333 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 [2022-12-12 20:13:11,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1840001028, now seen corresponding path program 1 times [2022-12-12 20:13:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446439275] [2022-12-12 20:13:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446439275] [2022-12-12 20:13:11,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446439275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993723031] [2022-12-12 20:13:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:11,450 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) [2022-12-12 20:13:11,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 20:13:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:13:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:11,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:11,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993723031] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:11,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:13:11,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-12 20:13:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352721588] [2022-12-12 20:13:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:13:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:13:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:13:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:13:11,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 20:13:11,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 109 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 20:13:11,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:11,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 20:13:11,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:11,752 INFO L130 PetriNetUnfolder]: 928/1339 cut-off events. [2022-12-12 20:13:11,752 INFO L131 PetriNetUnfolder]: For 1686/1796 co-relation queries the response was YES. [2022-12-12 20:13:11,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6334 conditions, 1339 events. 928/1339 cut-off events. For 1686/1796 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5051 event pairs, 68 based on Foata normal form. 16/1088 useless extension candidates. Maximal degree in co-relation 5980. Up to 1225 conditions per place. [2022-12-12 20:13:11,759 INFO L137 encePairwiseOnDemand]: 23/28 looper letters, 128 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2022-12-12 20:13:11,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 143 transitions, 1468 flow [2022-12-12 20:13:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:13:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:13:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2022-12-12 20:13:11,760 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2022-12-12 20:13:11,760 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2022-12-12 20:13:11,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 143 transitions, 1468 flow [2022-12-12 20:13:11,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 143 transitions, 1468 flow [2022-12-12 20:13:11,766 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 143 transitions, 1468 flow [2022-12-12 20:13:11,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 20:13:11,766 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:11,766 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:11,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:11,972 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 [2022-12-12 20:13:11,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 818055792, now seen corresponding path program 1 times [2022-12-12 20:13:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:11,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407045791] [2022-12-12 20:13:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:12,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:12,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407045791] [2022-12-12 20:13:12,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407045791] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:12,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114275340] [2022-12-12 20:13:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:12,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:12,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:12,751 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) [2022-12-12 20:13:12,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 20:13:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-12 20:13:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:13,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:13:13,134 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:13:13,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:13:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:13,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:13,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:13,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 94 [2022-12-12 20:13:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:13,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114275340] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:13,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2022-12-12 20:13:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103894879] [2022-12-12 20:13:13,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:13,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 20:13:13,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 20:13:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-12-12 20:13:13,520 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 20:13:13,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 143 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 27 states have internal predecessors, (86), 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 20:13:13,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:13,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 20:13:13,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:14,958 INFO L130 PetriNetUnfolder]: 3042/4423 cut-off events. [2022-12-12 20:13:14,958 INFO L131 PetriNetUnfolder]: For 5093/5201 co-relation queries the response was YES. [2022-12-12 20:13:14,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25284 conditions, 4423 events. 3042/4423 cut-off events. For 5093/5201 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20901 event pairs, 40 based on Foata normal form. 41/3562 useless extension candidates. Maximal degree in co-relation 16502. Up to 4051 conditions per place. [2022-12-12 20:13:14,996 INFO L137 encePairwiseOnDemand]: 13/28 looper letters, 489 selfloop transitions, 171 changer transitions 9/671 dead transitions. [2022-12-12 20:13:14,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 671 transitions, 8268 flow [2022-12-12 20:13:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 20:13:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 20:13:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 318 transitions. [2022-12-12 20:13:15,001 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2022-12-12 20:13:15,002 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2022-12-12 20:13:15,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 671 transitions, 8268 flow [2022-12-12 20:13:15,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 662 transitions, 8139 flow [2022-12-12 20:13:15,025 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 662 transitions, 8139 flow [2022-12-12 20:13:15,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 27 states have internal predecessors, (86), 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 20:13:15,025 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:15,025 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:15,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:15,235 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 [2022-12-12 20:13:15,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:15,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1632485696, now seen corresponding path program 2 times [2022-12-12 20:13:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:15,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166573879] [2022-12-12 20:13:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166573879] [2022-12-12 20:13:16,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166573879] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200884517] [2022-12-12 20:13:16,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:13:16,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:16,806 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) [2022-12-12 20:13:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 20:13:16,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:13:16,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:13:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-12 20:13:16,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:17,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:13:17,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:13:17,222 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 20:13:17,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-12-12 20:13:17,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:13:17,315 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:13:17,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:13:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:17,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:17,435 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_253)) (.cse1 (* 4 c_~M~0))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0)) is different from false [2022-12-12 20:13:17,479 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:17,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 174 [2022-12-12 20:13:17,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:17,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 74 [2022-12-12 20:13:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-12 20:13:18,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200884517] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:18,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:18,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 30 [2022-12-12 20:13:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527016383] [2022-12-12 20:13:18,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 20:13:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 20:13:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=820, Unknown=1, NotChecked=58, Total=992 [2022-12-12 20:13:18,087 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 20:13:18,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 662 transitions, 8139 flow. Second operand has 32 states, 32 states have (on average 2.8125) internal successors, (90), 32 states have internal predecessors, (90), 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 20:13:18,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:18,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 20:13:18,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:20,626 INFO L130 PetriNetUnfolder]: 4340/6314 cut-off events. [2022-12-12 20:13:20,626 INFO L131 PetriNetUnfolder]: For 8136/8292 co-relation queries the response was YES. [2022-12-12 20:13:20,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42475 conditions, 6314 events. 4340/6314 cut-off events. For 8136/8292 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31512 event pairs, 46 based on Foata normal form. 26/4948 useless extension candidates. Maximal degree in co-relation 28065. Up to 5854 conditions per place. [2022-12-12 20:13:20,660 INFO L137 encePairwiseOnDemand]: 14/28 looper letters, 768 selfloop transitions, 224 changer transitions 8/1002 dead transitions. [2022-12-12 20:13:20,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1002 transitions, 14402 flow [2022-12-12 20:13:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 20:13:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 20:13:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 240 transitions. [2022-12-12 20:13:20,662 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2022-12-12 20:13:20,664 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 61 predicate places. [2022-12-12 20:13:20,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 1002 transitions, 14402 flow [2022-12-12 20:13:20,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 994 transitions, 14272 flow [2022-12-12 20:13:20,697 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 994 transitions, 14272 flow [2022-12-12 20:13:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.8125) internal successors, (90), 32 states have internal predecessors, (90), 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 20:13:20,698 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:20,698 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:20,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:20,904 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 [2022-12-12 20:13:20,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash 865817740, now seen corresponding path program 3 times [2022-12-12 20:13:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:20,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019060389] [2022-12-12 20:13:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:21,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019060389] [2022-12-12 20:13:21,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019060389] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055105472] [2022-12-12 20:13:21,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:13:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:21,611 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) [2022-12-12 20:13:21,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 20:13:21,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 20:13:21,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:13:21,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-12 20:13:21,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:22,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:13:22,088 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:13:22,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:13:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:22,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:22,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:22,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 82 [2022-12-12 20:13:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:22,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055105472] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:22,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:22,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-12-12 20:13:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440215378] [2022-12-12 20:13:22,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:22,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 20:13:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:22,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 20:13:22,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-12-12 20:13:22,438 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:13:22,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 994 transitions, 14272 flow. Second operand has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 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 20:13:22,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:22,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:13:22,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:25,046 INFO L130 PetriNetUnfolder]: 5153/7533 cut-off events. [2022-12-12 20:13:25,046 INFO L131 PetriNetUnfolder]: For 7049/7049 co-relation queries the response was YES. [2022-12-12 20:13:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58152 conditions, 7533 events. 5153/7533 cut-off events. For 7049/7049 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39046 event pairs, 74 based on Foata normal form. 3/5855 useless extension candidates. Maximal degree in co-relation 37409. Up to 7001 conditions per place. [2022-12-12 20:13:25,139 INFO L137 encePairwiseOnDemand]: 12/28 looper letters, 1023 selfloop transitions, 249 changer transitions 8/1280 dead transitions. [2022-12-12 20:13:25,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1280 transitions, 20760 flow [2022-12-12 20:13:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 20:13:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 20:13:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 224 transitions. [2022-12-12 20:13:25,156 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.25 [2022-12-12 20:13:25,157 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 92 predicate places. [2022-12-12 20:13:25,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 1280 transitions, 20760 flow [2022-12-12 20:13:25,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 1272 transitions, 20617 flow [2022-12-12 20:13:25,282 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 1272 transitions, 20617 flow [2022-12-12 20:13:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 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 20:13:25,282 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:25,282 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:25,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:25,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1066600816, now seen corresponding path program 4 times [2022-12-12 20:13:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:25,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077151040] [2022-12-12 20:13:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:25,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077151040] [2022-12-12 20:13:26,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077151040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583056450] [2022-12-12 20:13:26,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:13:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:26,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:13:26,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 20:13:26,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:13:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:13:26,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-12 20:13:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:26,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:26,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-12-12 20:13:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:26,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:27,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:27,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 94 [2022-12-12 20:13:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:27,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583056450] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:27,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:27,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 28 [2022-12-12 20:13:27,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869325776] [2022-12-12 20:13:27,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:27,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 20:13:27,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 20:13:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-12 20:13:27,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:13:27,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 1272 transitions, 20617 flow. Second operand has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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 20:13:27,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:27,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:13:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:30,728 INFO L130 PetriNetUnfolder]: 6053/8853 cut-off events. [2022-12-12 20:13:30,728 INFO L131 PetriNetUnfolder]: For 8221/8221 co-relation queries the response was YES. [2022-12-12 20:13:30,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77476 conditions, 8853 events. 6053/8853 cut-off events. For 8221/8221 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 47517 event pairs, 52 based on Foata normal form. 1/6979 useless extension candidates. Maximal degree in co-relation 50153. Up to 8283 conditions per place. [2022-12-12 20:13:30,794 INFO L137 encePairwiseOnDemand]: 12/28 looper letters, 1389 selfloop transitions, 435 changer transitions 1/1825 dead transitions. [2022-12-12 20:13:30,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 1825 transitions, 33016 flow [2022-12-12 20:13:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 20:13:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 20:13:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 236 transitions. [2022-12-12 20:13:30,796 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23412698412698413 [2022-12-12 20:13:30,797 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 127 predicate places. [2022-12-12 20:13:30,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 1825 transitions, 33016 flow [2022-12-12 20:13:30,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 1824 transitions, 32995 flow [2022-12-12 20:13:30,843 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 1824 transitions, 32995 flow [2022-12-12 20:13:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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 20:13:30,845 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:30,845 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:30,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 20:13:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:31,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1866565630, now seen corresponding path program 5 times [2022-12-12 20:13:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:31,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621819284] [2022-12-12 20:13:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:32,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621819284] [2022-12-12 20:13:32,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621819284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:32,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102771983] [2022-12-12 20:13:32,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:13:32,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:32,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:13:32,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 20:13:32,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 20:13:32,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:13:32,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-12 20:13:32,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:32,553 INFO L321 Elim1Store]: treesize reduction 28, result has 56.9 percent of original size [2022-12-12 20:13:32,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 47 [2022-12-12 20:13:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:32,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:32,805 INFO L321 Elim1Store]: treesize reduction 65, result has 23.5 percent of original size [2022-12-12 20:13:32,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 29 [2022-12-12 20:13:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:32,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102771983] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:32,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:32,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 6] total 27 [2022-12-12 20:13:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313418031] [2022-12-12 20:13:32,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:32,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 20:13:32,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 20:13:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2022-12-12 20:13:32,844 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:13:32,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1824 transitions, 32995 flow. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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 20:13:32,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:32,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:13:32,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:37,949 INFO L130 PetriNetUnfolder]: 9230/13889 cut-off events. [2022-12-12 20:13:37,949 INFO L131 PetriNetUnfolder]: For 9651/9651 co-relation queries the response was YES. [2022-12-12 20:13:37,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135948 conditions, 13889 events. 9230/13889 cut-off events. For 9651/9651 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 85220 event pairs, 34 based on Foata normal form. 6/11049 useless extension candidates. Maximal degree in co-relation 87384. Up to 13036 conditions per place. [2022-12-12 20:13:38,033 INFO L137 encePairwiseOnDemand]: 9/28 looper letters, 2389 selfloop transitions, 996 changer transitions 39/3424 dead transitions. [2022-12-12 20:13:38,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 3424 transitions, 69040 flow [2022-12-12 20:13:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 20:13:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 20:13:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 344 transitions. [2022-12-12 20:13:38,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2022-12-12 20:13:38,036 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 169 predicate places. [2022-12-12 20:13:38,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 3424 transitions, 69040 flow [2022-12-12 20:13:38,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 3385 transitions, 68218 flow [2022-12-12 20:13:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 3385 transitions, 68218 flow [2022-12-12 20:13:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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 20:13:38,133 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:38,133 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:38,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:38,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1741284858, now seen corresponding path program 6 times [2022-12-12 20:13:38,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:38,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126779331] [2022-12-12 20:13:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:39,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:39,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126779331] [2022-12-12 20:13:39,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126779331] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:39,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339653933] [2022-12-12 20:13:39,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:13:39,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:39,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:39,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:13:39,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 20:13:39,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 20:13:39,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:13:39,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-12 20:13:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:39,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:39,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 85 [2022-12-12 20:13:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:39,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:39,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:39,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 94 [2022-12-12 20:13:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:13:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339653933] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:40,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:40,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 7] total 27 [2022-12-12 20:13:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645522562] [2022-12-12 20:13:40,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:40,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 20:13:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:40,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 20:13:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2022-12-12 20:13:40,143 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 20:13:40,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 3385 transitions, 68218 flow. Second operand has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 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 20:13:40,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:40,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 20:13:40,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:13:47,927 INFO L130 PetriNetUnfolder]: 11319/16888 cut-off events. [2022-12-12 20:13:47,928 INFO L131 PetriNetUnfolder]: For 13049/13049 co-relation queries the response was YES. [2022-12-12 20:13:47,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181599 conditions, 16888 events. 11319/16888 cut-off events. For 13049/13049 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 105362 event pairs, 50 based on Foata normal form. 4/13500 useless extension candidates. Maximal degree in co-relation 109580. Up to 15905 conditions per place. [2022-12-12 20:13:48,165 INFO L137 encePairwiseOnDemand]: 14/28 looper letters, 3266 selfloop transitions, 1014 changer transitions 11/4355 dead transitions. [2022-12-12 20:13:48,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 4355 transitions, 96365 flow [2022-12-12 20:13:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 20:13:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 20:13:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 312 transitions. [2022-12-12 20:13:48,168 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2932330827067669 [2022-12-12 20:13:48,169 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 204 predicate places. [2022-12-12 20:13:48,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 4355 transitions, 96365 flow [2022-12-12 20:13:48,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 4344 transitions, 96105 flow [2022-12-12 20:13:48,322 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 4344 transitions, 96105 flow [2022-12-12 20:13:48,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 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 20:13:48,322 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:13:48,322 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:13:48,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 20:13:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 20:13:48,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:13:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:13:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1124093926, now seen corresponding path program 7 times [2022-12-12 20:13:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:13:48,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645588702] [2022-12-12 20:13:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:13:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:13:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:13:49,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:13:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645588702] [2022-12-12 20:13:49,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645588702] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:13:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801988911] [2022-12-12 20:13:49,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:13:49,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:13:49,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:13:49,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:13:49,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 20:13:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:13:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-12 20:13:49,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:13:49,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:13:49,781 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:13:49,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:13:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:49,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:13:49,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:13:49,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 94 [2022-12-12 20:13:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:13:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801988911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:13:50,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:13:50,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2022-12-12 20:13:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380187306] [2022-12-12 20:13:50,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:13:50,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 20:13:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:13:50,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 20:13:50,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-12-12 20:13:50,116 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 20:13:50,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 4344 transitions, 96105 flow. Second operand has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 30 states have internal predecessors, (89), 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 20:13:50,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:13:50,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 20:13:50,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:14:00,669 INFO L130 PetriNetUnfolder]: 12661/18984 cut-off events. [2022-12-12 20:14:00,669 INFO L131 PetriNetUnfolder]: For 16622/16622 co-relation queries the response was YES. [2022-12-12 20:14:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222542 conditions, 18984 events. 12661/18984 cut-off events. For 16622/16622 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 121924 event pairs, 50 based on Foata normal form. 4/15078 useless extension candidates. Maximal degree in co-relation 133003. Up to 17919 conditions per place. [2022-12-12 20:14:00,802 INFO L137 encePairwiseOnDemand]: 15/28 looper letters, 3947 selfloop transitions, 892 changer transitions 10/4913 dead transitions. [2022-12-12 20:14:00,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 4913 transitions, 118573 flow [2022-12-12 20:14:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 20:14:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 20:14:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 222 transitions. [2022-12-12 20:14:00,803 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3171428571428571 [2022-12-12 20:14:00,803 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 228 predicate places. [2022-12-12 20:14:00,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 4913 transitions, 118573 flow [2022-12-12 20:14:00,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 4903 transitions, 118315 flow [2022-12-12 20:14:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 4903 transitions, 118315 flow [2022-12-12 20:14:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 30 states have internal predecessors, (89), 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 20:14:00,951 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:14:00,951 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:14:00,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 20:14:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:14:01,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:14:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:14:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1336566696, now seen corresponding path program 8 times [2022-12-12 20:14:01,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:14:01,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176217290] [2022-12-12 20:14:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:14:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:14:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:14:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:14:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:14:02,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176217290] [2022-12-12 20:14:02,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176217290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:14:02,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510676149] [2022-12-12 20:14:02,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:14:02,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:14:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:14:02,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:14:02,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 20:14:02,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:14:02,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:14:02,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-12 20:14:02,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:14:02,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:14:02,715 INFO L321 Elim1Store]: treesize reduction 47, result has 30.9 percent of original size [2022-12-12 20:14:02,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 31 [2022-12-12 20:14:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:02,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:14:02,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:14:02,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 82 [2022-12-12 20:14:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:03,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510676149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:14:03,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:14:03,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 29 [2022-12-12 20:14:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928055876] [2022-12-12 20:14:03,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:14:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 20:14:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:14:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 20:14:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-12-12 20:14:03,053 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:14:03,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 4903 transitions, 118315 flow. Second operand has 31 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 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 20:14:03,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:14:03,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:14:03,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:14:16,538 INFO L130 PetriNetUnfolder]: 13475/20172 cut-off events. [2022-12-12 20:14:16,538 INFO L131 PetriNetUnfolder]: For 16713/16713 co-relation queries the response was YES. [2022-12-12 20:14:16,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256567 conditions, 20172 events. 13475/20172 cut-off events. For 16713/16713 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 130649 event pairs, 54 based on Foata normal form. 2/16048 useless extension candidates. Maximal degree in co-relation 151421. Up to 19061 conditions per place. [2022-12-12 20:14:16,682 INFO L137 encePairwiseOnDemand]: 13/28 looper letters, 4065 selfloop transitions, 1334 changer transitions 3/5402 dead transitions. [2022-12-12 20:14:16,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 5402 transitions, 140797 flow [2022-12-12 20:14:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-12 20:14:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-12 20:14:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 258 transitions. [2022-12-12 20:14:16,683 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23035714285714284 [2022-12-12 20:14:16,684 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 267 predicate places. [2022-12-12 20:14:16,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 5402 transitions, 140797 flow [2022-12-12 20:14:16,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 5399 transitions, 140713 flow [2022-12-12 20:14:16,851 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 5399 transitions, 140713 flow [2022-12-12 20:14:16,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 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 20:14:16,851 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:14:16,851 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:14:16,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-12 20:14:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-12 20:14:17,056 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:14:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:14:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1802630658, now seen corresponding path program 9 times [2022-12-12 20:14:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:14:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781474921] [2022-12-12 20:14:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:14:17,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:14:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:14:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:14:18,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:14:18,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781474921] [2022-12-12 20:14:18,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781474921] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:14:18,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372331791] [2022-12-12 20:14:18,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:14:18,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:14:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:14:18,066 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:14:18,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 20:14:18,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:14:18,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:14:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-12 20:14:18,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:14:18,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:14:18,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-12-12 20:14:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:18,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:14:18,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:14:18,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 82 [2022-12-12 20:14:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:19,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372331791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:14:19,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:14:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 30 [2022-12-12 20:14:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390263638] [2022-12-12 20:14:19,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:14:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 20:14:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:14:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 20:14:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-12-12 20:14:19,007 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:14:19,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 5399 transitions, 140713 flow. Second operand has 32 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 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 20:14:19,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:14:19,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:14:19,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:14:33,803 INFO L130 PetriNetUnfolder]: 13759/20688 cut-off events. [2022-12-12 20:14:33,803 INFO L131 PetriNetUnfolder]: For 17523/17523 co-relation queries the response was YES. [2022-12-12 20:14:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283992 conditions, 20688 events. 13759/20688 cut-off events. For 17523/17523 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 135611 event pairs, 52 based on Foata normal form. 2/16504 useless extension candidates. Maximal degree in co-relation 167109. Up to 19577 conditions per place. [2022-12-12 20:14:34,094 INFO L137 encePairwiseOnDemand]: 13/28 looper letters, 4360 selfloop transitions, 1335 changer transitions 4/5699 dead transitions. [2022-12-12 20:14:34,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 5699 transitions, 160015 flow [2022-12-12 20:14:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 20:14:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 20:14:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 135 transitions. [2022-12-12 20:14:34,095 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21915584415584416 [2022-12-12 20:14:34,095 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 288 predicate places. [2022-12-12 20:14:34,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 5699 transitions, 160015 flow [2022-12-12 20:14:34,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 5695 transitions, 159897 flow [2022-12-12 20:14:34,279 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 5695 transitions, 159897 flow [2022-12-12 20:14:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 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 20:14:34,280 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:14:34,280 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:14:34,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-12 20:14:34,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 20:14:34,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:14:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:14:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1291621698, now seen corresponding path program 10 times [2022-12-12 20:14:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:14:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033735358] [2022-12-12 20:14:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:14:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:14:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:14:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:14:35,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:14:35,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033735358] [2022-12-12 20:14:35,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033735358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:14:35,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030661020] [2022-12-12 20:14:35,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:14:35,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:14:35,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:14:35,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:14:35,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 20:14:35,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:14:35,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:14:35,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-12 20:14:35,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:14:35,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:14:35,438 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:14:35,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:14:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:35,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:14:35,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:14:35,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 82 [2022-12-12 20:14:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:14:35,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030661020] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:14:35,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:14:35,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 26 [2022-12-12 20:14:35,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020717812] [2022-12-12 20:14:35,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:14:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 20:14:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:14:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 20:14:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-12-12 20:14:35,816 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 20:14:35,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 5695 transitions, 159897 flow. Second operand has 28 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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 20:14:35,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:14:35,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 20:14:35,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:15:01,170 INFO L130 PetriNetUnfolder]: 17375/25915 cut-off events. [2022-12-12 20:15:01,170 INFO L131 PetriNetUnfolder]: For 21067/21067 co-relation queries the response was YES. [2022-12-12 20:15:01,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382648 conditions, 25915 events. 17375/25915 cut-off events. For 21067/21067 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 173112 event pairs, 65 based on Foata normal form. 3/20959 useless extension candidates. Maximal degree in co-relation 153973. Up to 24676 conditions per place. [2022-12-12 20:15:01,372 INFO L137 encePairwiseOnDemand]: 9/28 looper letters, 4896 selfloop transitions, 3091 changer transitions 7/7994 dead transitions. [2022-12-12 20:15:01,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 7994 transitions, 240451 flow [2022-12-12 20:15:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-12 20:15:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-12-12 20:15:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 588 transitions. [2022-12-12 20:15:01,374 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23863636363636365 [2022-12-12 20:15:01,374 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 375 predicate places. [2022-12-12 20:15:01,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 7994 transitions, 240451 flow [2022-12-12 20:15:01,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 7987 transitions, 240229 flow [2022-12-12 20:15:01,639 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 7987 transitions, 240229 flow [2022-12-12 20:15:01,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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 20:15:01,639 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:15:01,639 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:15:01,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 20:15:01,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 20:15:01,847 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 20:15:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:15:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1627690034, now seen corresponding path program 11 times [2022-12-12 20:15:01,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:15:01,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288730148] [2022-12-12 20:15:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:15:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:15:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:15:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:15:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:15:02,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288730148] [2022-12-12 20:15:02,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288730148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:15:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988097987] [2022-12-12 20:15:02,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:15:02,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:15:02,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:15:02,892 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:15:02,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 20:15:03,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:15:03,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:15:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-12 20:15:03,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:15:03,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 20:15:03,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 20:15:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:15:03,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:15:03,386 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 20:15:03,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-12-12 20:15:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:15:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:15:03,448 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 20:15:03,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-12-12 20:15:03,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:15:03,589 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-12 20:15:03,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2022-12-12 20:15:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:15:03,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:15:04,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:15:04,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 70 [2022-12-12 20:15:04,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:15:04,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153590 treesize of output 129086 [2022-12-12 20:15:04,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:15:04,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129014 treesize of output 104446 [2022-12-12 20:15:04,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:15:04,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104438 treesize of output 90162 [2022-12-12 20:15:05,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:15:05,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90102 treesize of output 77822 Received shutdown request... [2022-12-12 20:27:26,929 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-12 20:27:26,931 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 20:27:26,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 20:27:26,959 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:27:26,964 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 [2022-12-12 20:27:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 20:27:27,137 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-12 20:27:27,139 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 20:27:27,139 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 20:27:27,139 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 20:27:27,139 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1, 1] [2022-12-12 20:27:27,142 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:27:27,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:27:27,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:27:27 BasicIcfg [2022-12-12 20:27:27,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:27:27,145 INFO L158 Benchmark]: Toolchain (without parser) took 863650.33ms. Allocated memory was 204.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 180.9MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-12 20:27:27,145 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory was 180.4MB in the beginning and 180.2MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:27:27,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.56ms. Allocated memory is still 204.5MB. Free memory was 180.9MB in the beginning and 167.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 20:27:27,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.65ms. Allocated memory is still 204.5MB. Free memory was 167.3MB in the beginning and 164.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 20:27:27,145 INFO L158 Benchmark]: Boogie Preprocessor took 47.31ms. Allocated memory is still 204.5MB. Free memory was 164.6MB in the beginning and 162.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 20:27:27,146 INFO L158 Benchmark]: RCFGBuilder took 810.97ms. Allocated memory is still 204.5MB. Free memory was 162.5MB in the beginning and 104.9MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2022-12-12 20:27:27,146 INFO L158 Benchmark]: TraceAbstraction took 862471.72ms. Allocated memory was 204.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 103.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-12-12 20:27:27,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory was 180.4MB in the beginning and 180.2MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.56ms. Allocated memory is still 204.5MB. Free memory was 180.9MB in the beginning and 167.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.65ms. Allocated memory is still 204.5MB. Free memory was 167.3MB in the beginning and 164.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.31ms. Allocated memory is still 204.5MB. Free memory was 164.6MB in the beginning and 162.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 810.97ms. Allocated memory is still 204.5MB. Free memory was 162.5MB in the beginning and 104.9MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * TraceAbstraction took 862471.72ms. Allocated memory was 204.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 103.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 160 PlacesBefore, 33 PlacesAfterwards, 166 TransitionsBefore, 28 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 96 TrivialYvCompositions, 31 ConcurrentYvCompositions, 11 ChoiceCompositions, 138 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 838, independent: 820, independent conditional: 820, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 838, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 838, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 838, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 791, independent: 779, independent conditional: 0, independent unconditional: 779, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 791, independent: 779, independent conditional: 0, independent unconditional: 779, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 838, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 791, unknown conditional: 0, unknown unconditional: 791] , Statistics on independence cache: Total cache size (in pairs): 1262, Positive cache size: 1250, Positive conditional cache size: 0, Positive unconditional cache size: 1250, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 99]: 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 27 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 100]: 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 27 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 98]: 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 27 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 197 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 862.4s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 89.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3365 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3365 mSDsluCounter, 941 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 88 IncrementalHoareTripleChecker+Unchecked, 867 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15332 IncrementalHoareTripleChecker+Invalid, 15753 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 74 mSDtfsCounter, 15332 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 430 SyntacticMatches, 8 SemanticMatches, 588 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8850 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240229occurred in iteration=14, InterpolantAutomatonStates: 392, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 2200 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 661 NumberOfCodeBlocks, 661 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 932 ConstructedInterpolants, 15 QuantifiedInterpolants, 12552 SizeOfPredicates, 329 NumberOfNonLiveVariables, 3574 ConjunctsInSsa, 627 ConjunctsInUnsatCore, 38 InterpolantComputations, 4 PerfectInterpolantSequences, 50/139 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