/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:16:57,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:16:57,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:16:58,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:16:58,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:16:58,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:16:58,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:16:58,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:16:58,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:16:58,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:16:58,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:16:58,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:16:58,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:16:58,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:16:58,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:16:58,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:16:58,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:16:58,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:16:58,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:16:58,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:16:58,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:16:58,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:16:58,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:16:58,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:16:58,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 22:16:58,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 22:16:58,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 22:16:58,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 22:16:58,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 22:16:58,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 22:16:58,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 22:16:58,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 22:16:58,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 22:16:58,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 22:16:58,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 22:16:58,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 22:16:58,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 22:16:58,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 22:16:58,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:16:58,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:16:58,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:16:58,063 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 [2022-12-05 22:16:58,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:16:58,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:16:58,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 22:16:58,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 22:16:58,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:16:58,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:16:58,086 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:16:58,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:16:58,086 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:16:58,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:16:58,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:16:58,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:16:58,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:16:58,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:16:58,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:16:58,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 22:16:58,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:16:58,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:16:58,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:16:58,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:16:58,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:16:58,299 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:16:58,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-12-05 22:16:59,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:16:59,297 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:16:59,297 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-12-05 22:16:59,305 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5d235c3/e592dc6a001e4dafa9cab82746234ccd/FLAG2fe55e11f [2022-12-05 22:16:59,321 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5d235c3/e592dc6a001e4dafa9cab82746234ccd [2022-12-05 22:16:59,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:16:59,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:16:59,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:16:59,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:16:59,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:16:59,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425a4258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59, skipping insertion in model container [2022-12-05 22:16:59,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:16:59,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:16:59,484 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/test-easy1.wvr.c[1876,1889] [2022-12-05 22:16:59,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:16:59,495 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:16:59,514 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/test-easy1.wvr.c[1876,1889] [2022-12-05 22:16:59,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:16:59,532 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:16:59,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59 WrapperNode [2022-12-05 22:16:59,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:16:59,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:16:59,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:16:59,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:16:59,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,563 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-05 22:16:59,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:16:59,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:16:59,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:16:59,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:16:59,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:16:59,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:16:59,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:16:59,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:16:59,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (1/1) ... [2022-12-05 22:16:59,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:16:59,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:16:59,637 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) [2022-12-05 22:16:59,658 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 [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:16:59,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:16:59,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:16:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:16:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:16:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:16:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:16:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:16:59,674 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:16:59,753 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:16:59,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:16:59,898 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:16:59,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:16:59,905 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 22:16:59,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:16:59 BoogieIcfgContainer [2022-12-05 22:16:59,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:16:59,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:16:59,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:16:59,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:16:59,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:16:59" (1/3) ... [2022-12-05 22:16:59,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750612b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:16:59, skipping insertion in model container [2022-12-05 22:16:59,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:16:59" (2/3) ... [2022-12-05 22:16:59,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750612b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:16:59, skipping insertion in model container [2022-12-05 22:16:59,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:16:59" (3/3) ... [2022-12-05 22:16:59,912 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-12-05 22:16:59,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:16:59,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:16:59,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:16:59,958 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 22:16:59,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 170 flow [2022-12-05 22:17:00,028 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2022-12-05 22:17:00,029 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:00,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 6/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-12-05 22:17:00,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 170 flow [2022-12-05 22:17:00,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 146 flow [2022-12-05 22:17:00,036 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:17:00,050 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 146 flow [2022-12-05 22:17:00,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 146 flow [2022-12-05 22:17:00,066 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2022-12-05 22:17:00,066 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:00,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 67 events. 6/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-12-05 22:17:00,068 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 146 flow [2022-12-05 22:17:00,068 INFO L188 LiptonReduction]: Number of co-enabled transitions 368 [2022-12-05 22:17:02,118 INFO L203 LiptonReduction]: Total number of compositions: 54 [2022-12-05 22:17:02,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:17:02,145 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;@62997f35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:17:02,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 22:17:02,149 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-05 22:17:02,149 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:02,149 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:02,150 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:02,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 945197104, now seen corresponding path program 1 times [2022-12-05 22:17:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:02,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976556948] [2022-12-05 22:17:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:02,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976556948] [2022-12-05 22:17:02,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976556948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:02,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:02,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 22:17:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126185809] [2022-12-05 22:17:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:02,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:17:02,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:17:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:17:02,454 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:02,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-05 22:17:02,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:02,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:02,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:02,508 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2022-12-05 22:17:02,508 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-05 22:17:02,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 169 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2022-12-05 22:17:02,511 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2022-12-05 22:17:02,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2022-12-05 22:17:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:17:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:17:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2022-12-05 22:17:02,519 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-05 22:17:02,520 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 24 transitions. [2022-12-05 22:17:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2022-12-05 22:17:02,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:02,525 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2022-12-05 22:17:02,526 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2022-12-05 22:17:02,530 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2022-12-05 22:17:02,530 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2022-12-05 22:17:02,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-05 22:17:02,530 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:02,530 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:02,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:17:02,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -764285359, now seen corresponding path program 1 times [2022-12-05 22:17:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:02,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469093406] [2022-12-05 22:17:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:02,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:02,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469093406] [2022-12-05 22:17:02,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469093406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:02,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:02,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:17:02,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933093856] [2022-12-05 22:17:02,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:02,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:17:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:02,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:17:02,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:17:02,668 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:02,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 22:17:02,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:02,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:02,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:02,723 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2022-12-05 22:17:02,723 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-05 22:17:02,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2022-12-05 22:17:02,735 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2022-12-05 22:17:02,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2022-12-05 22:17:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:17:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:17:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-12-05 22:17:02,737 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-05 22:17:02,737 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 30 transitions. [2022-12-05 22:17:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2022-12-05 22:17:02,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:17:02,738 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2022-12-05 22:17:02,738 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-12-05 22:17:02,739 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2022-12-05 22:17:02,739 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 59 flow [2022-12-05 22:17:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 22:17:02,739 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:02,739 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 22:17:02,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -595036581, now seen corresponding path program 1 times [2022-12-05 22:17:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:02,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272813085] [2022-12-05 22:17:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:02,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272813085] [2022-12-05 22:17:02,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272813085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:02,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393942898] [2022-12-05 22:17:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:02,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:02,844 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) [2022-12-05 22:17:02,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 22:17:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 22:17:02,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:03,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:03,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393942898] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:03,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 22:17:03,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2022-12-05 22:17:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668056464] [2022-12-05 22:17:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-05 22:17:03,050 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:03,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 59 flow. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-05 22:17:03,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:03,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:03,122 INFO L130 PetriNetUnfolder]: 60/118 cut-off events. [2022-12-05 22:17:03,122 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-05 22:17:03,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 118 events. 60/118 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 6 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 97. Up to 44 conditions per place. [2022-12-05 22:17:03,123 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 28 selfloop transitions, 9 changer transitions 4/41 dead transitions. [2022-12-05 22:17:03,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 41 transitions, 224 flow [2022-12-05 22:17:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:17:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:17:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-12-05 22:17:03,125 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2022-12-05 22:17:03,125 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 59 flow. Second operand 5 states and 41 transitions. [2022-12-05 22:17:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 41 transitions, 224 flow [2022-12-05 22:17:03,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 41 transitions, 212 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:03,126 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 123 flow [2022-12-05 22:17:03,126 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-12-05 22:17:03,127 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 7 predicate places. [2022-12-05 22:17:03,127 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 123 flow [2022-12-05 22:17:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-05 22:17:03,127 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:03,127 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:03,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 22:17:03,334 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 [2022-12-05 22:17:03,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash 894868563, now seen corresponding path program 2 times [2022-12-05 22:17:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583568789] [2022-12-05 22:17:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:03,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:03,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583568789] [2022-12-05 22:17:03,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583568789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:03,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:03,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:17:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815499937] [2022-12-05 22:17:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:17:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:17:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:17:03,386 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:03,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 22:17:03,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:03,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:03,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:03,448 INFO L130 PetriNetUnfolder]: 62/124 cut-off events. [2022-12-05 22:17:03,448 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-12-05 22:17:03,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 124 events. 62/124 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 343 event pairs, 12 based on Foata normal form. 8/132 useless extension candidates. Maximal degree in co-relation 251. Up to 106 conditions per place. [2022-12-05 22:17:03,453 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 24 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2022-12-05 22:17:03,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 218 flow [2022-12-05 22:17:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:17:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:17:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-12-05 22:17:03,454 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2022-12-05 22:17:03,454 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 123 flow. Second operand 4 states and 23 transitions. [2022-12-05 22:17:03,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 218 flow [2022-12-05 22:17:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 212 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-05 22:17:03,458 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 146 flow [2022-12-05 22:17:03,458 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-12-05 22:17:03,459 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-12-05 22:17:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 146 flow [2022-12-05 22:17:03,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 22:17:03,460 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:03,460 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 22:17:03,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:03,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1864852368, now seen corresponding path program 1 times [2022-12-05 22:17:03,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:03,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398977550] [2022-12-05 22:17:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:03,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398977550] [2022-12-05 22:17:03,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398977550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988695536] [2022-12-05 22:17:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:03,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:03,578 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) [2022-12-05 22:17:03,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 22:17:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:03,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 22:17:03,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:03,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 22:17:03,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988695536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:03,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 22:17:03,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-05 22:17:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301866350] [2022-12-05 22:17:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 22:17:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 22:17:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-05 22:17:03,682 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:03,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 146 flow. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-05 22:17:03,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:03,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:03,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:03,749 INFO L130 PetriNetUnfolder]: 62/123 cut-off events. [2022-12-05 22:17:03,750 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-12-05 22:17:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 123 events. 62/123 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 353 event pairs, 4 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 261. Up to 42 conditions per place. [2022-12-05 22:17:03,753 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 24 selfloop transitions, 5 changer transitions 14/43 dead transitions. [2022-12-05 22:17:03,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 315 flow [2022-12-05 22:17:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2022-12-05 22:17:03,754 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2022-12-05 22:17:03,754 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 146 flow. Second operand 6 states and 34 transitions. [2022-12-05 22:17:03,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 315 flow [2022-12-05 22:17:03,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 302 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:03,763 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 153 flow [2022-12-05 22:17:03,764 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2022-12-05 22:17:03,766 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2022-12-05 22:17:03,766 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 153 flow [2022-12-05 22:17:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-05 22:17:03,766 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:03,766 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:03,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:03,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:03,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 885987816, now seen corresponding path program 2 times [2022-12-05 22:17:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:03,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916943046] [2022-12-05 22:17:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 22:17:04,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:04,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916943046] [2022-12-05 22:17:04,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916943046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:04,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:04,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:17:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939523781] [2022-12-05 22:17:04,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:04,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:17:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:04,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:17:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:17:04,046 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:04,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-05 22:17:04,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:04,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:04,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:04,083 INFO L130 PetriNetUnfolder]: 52/110 cut-off events. [2022-12-05 22:17:04,083 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2022-12-05 22:17:04,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 110 events. 52/110 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 302 event pairs, 8 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 469. Up to 86 conditions per place. [2022-12-05 22:17:04,084 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 24 selfloop transitions, 4 changer transitions 3/31 dead transitions. [2022-12-05 22:17:04,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 260 flow [2022-12-05 22:17:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:17:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:17:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-05 22:17:04,085 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2022-12-05 22:17:04,085 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 153 flow. Second operand 4 states and 25 transitions. [2022-12-05 22:17:04,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 260 flow [2022-12-05 22:17:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 253 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 22:17:04,087 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 170 flow [2022-12-05 22:17:04,087 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-12-05 22:17:04,089 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 16 predicate places. [2022-12-05 22:17:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 170 flow [2022-12-05 22:17:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-05 22:17:04,089 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:04,089 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 22:17:04,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1917290398, now seen corresponding path program 2 times [2022-12-05 22:17:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:04,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852761041] [2022-12-05 22:17:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:04,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:04,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852761041] [2022-12-05 22:17:04,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852761041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:04,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095418356] [2022-12-05 22:17:04,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:17:04,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:04,182 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) [2022-12-05 22:17:04,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 22:17:04,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:04,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:04,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 22:17:04,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:04,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 22:17:04,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095418356] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:04,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:04,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2022-12-05 22:17:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125410235] [2022-12-05 22:17:04,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 22:17:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 22:17:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-05 22:17:04,349 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:04,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 170 flow. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-12-05 22:17:04,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:04,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:04,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:04,480 INFO L130 PetriNetUnfolder]: 86/196 cut-off events. [2022-12-05 22:17:04,480 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-12-05 22:17:04,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 196 events. 86/196 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 749 event pairs, 4 based on Foata normal form. 7/203 useless extension candidates. Maximal degree in co-relation 287. Up to 80 conditions per place. [2022-12-05 22:17:04,481 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 35 selfloop transitions, 14 changer transitions 7/56 dead transitions. [2022-12-05 22:17:04,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 466 flow [2022-12-05 22:17:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 47 transitions. [2022-12-05 22:17:04,482 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2022-12-05 22:17:04,482 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 170 flow. Second operand 7 states and 47 transitions. [2022-12-05 22:17:04,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 466 flow [2022-12-05 22:17:04,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:04,484 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 294 flow [2022-12-05 22:17:04,484 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2022-12-05 22:17:04,485 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2022-12-05 22:17:04,485 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 294 flow [2022-12-05 22:17:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-12-05 22:17:04,485 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:04,485 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:04,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:04,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:04,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:04,691 INFO L85 PathProgramCache]: Analyzing trace with hash -171592976, now seen corresponding path program 3 times [2022-12-05 22:17:04,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:04,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788320829] [2022-12-05 22:17:04,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:04,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788320829] [2022-12-05 22:17:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788320829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:04,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136335043] [2022-12-05 22:17:04,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 22:17:04,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:04,768 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) [2022-12-05 22:17:04,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 22:17:04,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 22:17:04,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 22:17:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:04,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 22:17:04,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136335043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:04,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 22:17:04,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-05 22:17:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038625741] [2022-12-05 22:17:04,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 22:17:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 22:17:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-05 22:17:04,857 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:04,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 294 flow. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-05 22:17:04,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:04,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:04,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:04,912 INFO L130 PetriNetUnfolder]: 81/183 cut-off events. [2022-12-05 22:17:04,912 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-12-05 22:17:04,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 183 events. 81/183 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 689 event pairs, 12 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 634. Up to 61 conditions per place. [2022-12-05 22:17:04,913 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 28 selfloop transitions, 4 changer transitions 21/53 dead transitions. [2022-12-05 22:17:04,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 584 flow [2022-12-05 22:17:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-12-05 22:17:04,915 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2022-12-05 22:17:04,915 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 294 flow. Second operand 6 states and 32 transitions. [2022-12-05 22:17:04,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 584 flow [2022-12-05 22:17:04,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 548 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:04,918 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 246 flow [2022-12-05 22:17:04,918 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2022-12-05 22:17:04,919 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 30 predicate places. [2022-12-05 22:17:04,920 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 246 flow [2022-12-05 22:17:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-05 22:17:04,920 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:04,920 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:04,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-05 22:17:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:05,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1234871207, now seen corresponding path program 4 times [2022-12-05 22:17:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:05,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416481479] [2022-12-05 22:17:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416481479] [2022-12-05 22:17:05,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416481479] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048654197] [2022-12-05 22:17:05,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 22:17:05,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:05,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:05,181 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) [2022-12-05 22:17:05,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 22:17:05,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 22:17:05,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:05,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 22:17:05,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:05,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:05,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048654197] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:05,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:05,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-05 22:17:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503431015] [2022-12-05 22:17:05,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 22:17:05,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 22:17:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-05 22:17:05,290 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:05,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 246 flow. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 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) [2022-12-05 22:17:05,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:05,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:05,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:05,391 INFO L130 PetriNetUnfolder]: 65/140 cut-off events. [2022-12-05 22:17:05,392 INFO L131 PetriNetUnfolder]: For 959/959 co-relation queries the response was YES. [2022-12-05 22:17:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 140 events. 65/140 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 410 event pairs, 4 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 731. Up to 45 conditions per place. [2022-12-05 22:17:05,393 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 35 selfloop transitions, 20 changer transitions 9/64 dead transitions. [2022-12-05 22:17:05,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 635 flow [2022-12-05 22:17:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 22:17:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 22:17:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 58 transitions. [2022-12-05 22:17:05,394 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2022-12-05 22:17:05,395 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 246 flow. Second operand 12 states and 58 transitions. [2022-12-05 22:17:05,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 635 flow [2022-12-05 22:17:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 574 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-12-05 22:17:05,398 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 384 flow [2022-12-05 22:17:05,398 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=384, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2022-12-05 22:17:05,398 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2022-12-05 22:17:05,399 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 384 flow [2022-12-05 22:17:05,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 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) [2022-12-05 22:17:05,399 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:05,399 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:05,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:05,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1900503227, now seen corresponding path program 5 times [2022-12-05 22:17:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:05,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580580309] [2022-12-05 22:17:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:05,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580580309] [2022-12-05 22:17:05,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580580309] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:05,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742486211] [2022-12-05 22:17:05,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 22:17:05,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:05,647 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) [2022-12-05 22:17:05,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 22:17:05,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-05 22:17:05,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:05,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 22:17:05,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 22:17:05,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 22:17:05,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742486211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:05,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 22:17:05,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-12-05 22:17:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635918925] [2022-12-05 22:17:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:05,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 22:17:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 22:17:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-05 22:17:05,763 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:05,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 384 flow. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-12-05 22:17:05,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:05,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:05,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:05,811 INFO L130 PetriNetUnfolder]: 77/160 cut-off events. [2022-12-05 22:17:05,811 INFO L131 PetriNetUnfolder]: For 1506/1506 co-relation queries the response was YES. [2022-12-05 22:17:05,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 160 events. 77/160 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 486 event pairs, 8 based on Foata normal form. 2/162 useless extension candidates. Maximal degree in co-relation 860. Up to 60 conditions per place. [2022-12-05 22:17:05,813 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 17 selfloop transitions, 1 changer transitions 38/56 dead transitions. [2022-12-05 22:17:05,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 695 flow [2022-12-05 22:17:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 30 transitions. [2022-12-05 22:17:05,813 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2022-12-05 22:17:05,814 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 384 flow. Second operand 6 states and 30 transitions. [2022-12-05 22:17:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 695 flow [2022-12-05 22:17:05,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 548 flow, removed 69 selfloop flow, removed 3 redundant places. [2022-12-05 22:17:05,818 INFO L231 Difference]: Finished difference. Result has 61 places, 17 transitions, 132 flow [2022-12-05 22:17:05,818 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=17} [2022-12-05 22:17:05,818 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 43 predicate places. [2022-12-05 22:17:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 17 transitions, 132 flow [2022-12-05 22:17:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-12-05 22:17:05,819 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:05,819 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:05,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:06,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1632573686, now seen corresponding path program 6 times [2022-12-05 22:17:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:06,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360341854] [2022-12-05 22:17:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 22:17:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360341854] [2022-12-05 22:17:06,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360341854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271643156] [2022-12-05 22:17:06,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 22:17:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:06,129 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) [2022-12-05 22:17:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 22:17:06,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-05 22:17:06,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:06,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:06,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 22:17:06,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271643156] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:06,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:06,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2022-12-05 22:17:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736079892] [2022-12-05 22:17:06,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:06,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 22:17:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 22:17:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-05 22:17:06,275 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 22:17:06,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 17 transitions, 132 flow. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 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) [2022-12-05 22:17:06,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:06,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 22:17:06,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:06,405 INFO L130 PetriNetUnfolder]: 32/74 cut-off events. [2022-12-05 22:17:06,405 INFO L131 PetriNetUnfolder]: For 1012/1012 co-relation queries the response was YES. [2022-12-05 22:17:06,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 74 events. 32/74 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 155 event pairs, 2 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 430. Up to 25 conditions per place. [2022-12-05 22:17:06,406 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-12-05 22:17:06,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 338 flow [2022-12-05 22:17:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 22:17:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 22:17:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-12-05 22:17:06,406 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3162393162393162 [2022-12-05 22:17:06,406 INFO L175 Difference]: Start difference. First operand has 61 places, 17 transitions, 132 flow. Second operand 9 states and 37 transitions. [2022-12-05 22:17:06,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 338 flow [2022-12-05 22:17:06,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 245 flow, removed 33 selfloop flow, removed 16 redundant places. [2022-12-05 22:17:06,408 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2022-12-05 22:17:06,408 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2022-12-05 22:17:06,408 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 25 predicate places. [2022-12-05 22:17:06,408 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2022-12-05 22:17:06,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 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) [2022-12-05 22:17:06,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 22:17:06,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 22:17:06,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 22:17:06,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:06,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:06,614 INFO L458 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1] [2022-12-05 22:17:06,617 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:17:06,617 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:17:06,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:17:06 BasicIcfg [2022-12-05 22:17:06,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:17:06,619 INFO L158 Benchmark]: Toolchain (without parser) took 7295.42ms. Allocated memory was 201.3MB in the beginning and 323.0MB in the end (delta: 121.6MB). Free memory was 154.2MB in the beginning and 218.0MB in the end (delta: -63.8MB). Peak memory consumption was 59.3MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,619 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:17:06,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.30ms. Allocated memory is still 201.3MB. Free memory was 154.2MB in the beginning and 172.6MB in the end (delta: -18.4MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.78ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 171.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,620 INFO L158 Benchmark]: Boogie Preprocessor took 32.81ms. Allocated memory is still 201.3MB. Free memory was 171.1MB in the beginning and 170.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,620 INFO L158 Benchmark]: RCFGBuilder took 308.78ms. Allocated memory is still 201.3MB. Free memory was 170.0MB in the beginning and 158.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,620 INFO L158 Benchmark]: TraceAbstraction took 6711.34ms. Allocated memory was 201.3MB in the beginning and 323.0MB in the end (delta: 121.6MB). Free memory was 157.4MB in the beginning and 218.0MB in the end (delta: -60.6MB). Peak memory consumption was 61.6MB. Max. memory is 8.0GB. [2022-12-05 22:17:06,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.30ms. Allocated memory is still 201.3MB. Free memory was 154.2MB in the beginning and 172.6MB in the end (delta: -18.4MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.78ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 171.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.81ms. Allocated memory is still 201.3MB. Free memory was 171.1MB in the beginning and 170.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 308.78ms. Allocated memory is still 201.3MB. Free memory was 170.0MB in the beginning and 158.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6711.34ms. Allocated memory was 201.3MB in the beginning and 323.0MB in the end (delta: 121.6MB). Free memory was 157.4MB in the beginning and 218.0MB in the end (delta: -60.6MB). Peak memory consumption was 61.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 68 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 17 ConcurrentYvCompositions, 4 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 189, independent: 189, independent conditional: 189, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 189, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 189, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 189, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 189, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 189, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 189, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 189, unknown conditional: 0, unknown unconditional: 189] , Statistics on independence cache: Total cache size (in pairs): 310, Positive cache size: 310, Positive conditional cache size: 0, Positive unconditional cache size: 310, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 263 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 812 IncrementalHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 0 mSDtfsCounter, 812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 1386 SizeOfPredicates, 8 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 30/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 22:17:06,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...