./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:55:58,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:55:58,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:55:58,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:55:58,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:55:58,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:55:58,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:55:58,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:55:58,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:55:58,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:55:58,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:55:58,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:55:58,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:55:58,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:55:58,622 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:55:58,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:55:58,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:55:58,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:55:58,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:55:58,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:55:58,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:55:58,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:55:58,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:55:58,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:55:58,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:55:58,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:55:58,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:55:58,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:55:58,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:55:58,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:55:58,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:55:58,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:55:58,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:55:58,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:55:58,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:55:58,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:55:58,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:55:58,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:55:58,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:55:58,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:55:58,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:55:58,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:55:58,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:55:58,628 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:55:58,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:55:58,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:55:58,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:55:58,845 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:55:58,845 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:55:58,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-27 21:55:58,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:55:58,919 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:55:58,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 21:55:59,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:56:00,097 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:56:00,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 21:56:00,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb228810/504a265d30e8442d9b8c9515c59c3740/FLAG7ed92cdde [2024-06-27 21:56:00,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb228810/504a265d30e8442d9b8c9515c59c3740 [2024-06-27 21:56:00,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:56:00,123 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:56:00,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:56:00,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:56:00,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:56:00,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:58" (1/2) ... [2024-06-27 21:56:00,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62555d56 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:56:00, skipping insertion in model container [2024-06-27 21:56:00,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:58" (1/2) ... [2024-06-27 21:56:00,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23650c4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:56:00, skipping insertion in model container [2024-06-27 21:56:00,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:56:00" (2/2) ... [2024-06-27 21:56:00,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62555d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00, skipping insertion in model container [2024-06-27 21:56:00,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:56:00" (2/2) ... [2024-06-27 21:56:00,131 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:56:00,143 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:56:00,143 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] ! multithreaded || ((0LL - (long long )break_10) + (long long )i1_9 >= 0LL && (0LL - (long long )break_15) + (long long )i1_14 >= 0LL) [2024-06-27 21:56:00,144 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] ! multithreaded || ((0LL - (long long )break_10) + (long long )i1_9 >= 0LL && (0LL - (long long )break_15) + (long long )i1_14 >= 0LL) [2024-06-27 21:56:00,144 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:56:00,144 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-27 21:56:00,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:56:00,407 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 21:56:00,427 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:56:00,434 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:56:00,543 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 21:56:00,546 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:56:00,559 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:56:00,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00 WrapperNode [2024-06-27 21:56:00,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:56:00,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:56:00,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:56:00,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:56:00,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,663 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1564 [2024-06-27 21:56:00,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:56:00,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:56:00,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:56:00,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:56:00,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,701 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-27 21:56:00,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:56:00,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:56:00,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:56:00,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:56:00,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (1/1) ... [2024-06-27 21:56:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:56:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:00,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:56:00,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:56:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:56:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 21:56:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 21:56:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 21:56:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 21:56:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:56:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 21:56:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 21:56:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 21:56:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:56:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:56:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 21:56:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:56:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:56:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 21:56:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 21:56:00,859 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:56:01,007 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:56:01,008 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:56:02,224 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:56:02,224 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:56:03,263 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:56:03,264 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-27 21:56:03,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:56:03 BoogieIcfgContainer [2024-06-27 21:56:03,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:56:03,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:56:03,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:56:03,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:56:03,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:58" (1/4) ... [2024-06-27 21:56:03,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7a4704 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:56:03, skipping insertion in model container [2024-06-27 21:56:03,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:56:00" (2/4) ... [2024-06-27 21:56:03,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7a4704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:56:03, skipping insertion in model container [2024-06-27 21:56:03,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:56:00" (3/4) ... [2024-06-27 21:56:03,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7a4704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:56:03, skipping insertion in model container [2024-06-27 21:56:03,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:56:03" (4/4) ... [2024-06-27 21:56:03,271 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-27 21:56:03,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:56:03,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 21:56:03,286 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:56:03,472 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 21:56:03,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 21:56:03,584 INFO L124 PetriNetUnfolderBase]: 28/97 cut-off events. [2024-06-27 21:56:03,585 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 21:56:03,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 28/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-27 21:56:03,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 21:56:03,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 96 transitions, 204 flow [2024-06-27 21:56:03,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:56:03,601 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=LoopHeads, 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;@c37ea85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:56:03,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 21:56:03,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:56:03,607 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-27 21:56:03,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:56:03,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:03,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:03,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:03,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:03,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1172158999, now seen corresponding path program 1 times [2024-06-27 21:56:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397074666] [2024-06-27 21:56:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:56:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:03,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397074666] [2024-06-27 21:56:03,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397074666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232367054] [2024-06-27 21:56:03,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:03,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:03,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 21:56:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:03,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:03,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:04,957 INFO L124 PetriNetUnfolderBase]: 2533/3813 cut-off events. [2024-06-27 21:56:04,957 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-06-27 21:56:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 3813 events. 2533/3813 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18266 event pairs, 1725 based on Foata normal form. 0/2998 useless extension candidates. Maximal degree in co-relation 7497. Up to 3793 conditions per place. [2024-06-27 21:56:04,976 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 83 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-06-27 21:56:04,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 386 flow [2024-06-27 21:56:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-27 21:56:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 21:56:04,988 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 204 flow. Second operand 3 states and 120 transitions. [2024-06-27 21:56:04,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 386 flow [2024-06-27 21:56:04,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 378 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:56:04,994 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 230 flow [2024-06-27 21:56:04,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2024-06-27 21:56:04,999 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-06-27 21:56:04,999 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 230 flow [2024-06-27 21:56:04,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 21:56:04,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:04,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:56:05,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:05,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -192027891, now seen corresponding path program 1 times [2024-06-27 21:56:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994083572] [2024-06-27 21:56:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 21:56:05,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:05,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994083572] [2024-06-27 21:56:05,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994083572] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977114606] [2024-06-27 21:56:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:05,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:05,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:05,161 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) [2024-06-27 21:56:05,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 21:56:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:05,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 21:56:05,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 21:56:05,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 21:56:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977114606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 21:56:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-06-27 21:56:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731957645] [2024-06-27 21:56:05,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:05,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:05,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:56:05,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:05,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-06-27 21:56:05,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:05,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:06,287 INFO L124 PetriNetUnfolderBase]: 2533/3817 cut-off events. [2024-06-27 21:56:06,287 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-06-27 21:56:06,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 3817 events. 2533/3817 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18210 event pairs, 1725 based on Foata normal form. 1/3007 useless extension candidates. Maximal degree in co-relation 7610. Up to 3797 conditions per place. [2024-06-27 21:56:06,300 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 87 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2024-06-27 21:56:06,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 428 flow [2024-06-27 21:56:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 21:56:06,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-27 21:56:06,301 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 230 flow. Second operand 3 states and 116 transitions. [2024-06-27 21:56:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 428 flow [2024-06-27 21:56:06,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:06,304 INFO L231 Difference]: Finished difference. Result has 76 places, 100 transitions, 266 flow [2024-06-27 21:56:06,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=76, PETRI_TRANSITIONS=100} [2024-06-27 21:56:06,305 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2024-06-27 21:56:06,305 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 100 transitions, 266 flow [2024-06-27 21:56:06,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-06-27 21:56:06,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:06,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:06,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 21:56:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:06,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:06,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1458925691, now seen corresponding path program 1 times [2024-06-27 21:56:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:06,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485753621] [2024-06-27 21:56:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-27 21:56:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485753621] [2024-06-27 21:56:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485753621] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917788361] [2024-06-27 21:56:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:06,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:06,661 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) [2024-06-27 21:56:06,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 21:56:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:06,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 21:56:06,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-27 21:56:07,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:56:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-27 21:56:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917788361] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:56:07,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:56:07,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-06-27 21:56:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351833805] [2024-06-27 21:56:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:56:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:56:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:56:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:56:07,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:07,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 100 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:07,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:07,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:07,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:08,088 INFO L124 PetriNetUnfolderBase]: 2533/3841 cut-off events. [2024-06-27 21:56:08,088 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-27 21:56:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 3841 events. 2533/3841 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18340 event pairs, 1725 based on Foata normal form. 12/3042 useless extension candidates. Maximal degree in co-relation 7630. Up to 3793 conditions per place. [2024-06-27 21:56:08,100 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 79 selfloop transitions, 40 changer transitions 0/124 dead transitions. [2024-06-27 21:56:08,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 600 flow [2024-06-27 21:56:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:56:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:56:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 21:56:08,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25126262626262624 [2024-06-27 21:56:08,103 INFO L175 Difference]: Start difference. First operand has 76 places, 100 transitions, 266 flow. Second operand 8 states and 199 transitions. [2024-06-27 21:56:08,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 600 flow [2024-06-27 21:56:08,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:08,105 INFO L231 Difference]: Finished difference. Result has 85 places, 124 transitions, 496 flow [2024-06-27 21:56:08,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=496, PETRI_PLACES=85, PETRI_TRANSITIONS=124} [2024-06-27 21:56:08,106 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-06-27 21:56:08,106 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 124 transitions, 496 flow [2024-06-27 21:56:08,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:08,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:08,107 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:08,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:08,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-06-27 21:56:08,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:08,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1024538007, now seen corresponding path program 2 times [2024-06-27 21:56:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:08,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652627087] [2024-06-27 21:56:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-06-27 21:56:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652627087] [2024-06-27 21:56:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652627087] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558557722] [2024-06-27 21:56:08,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 21:56:08,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:08,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:08,532 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) [2024-06-27 21:56:08,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 21:56:08,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 21:56:08,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 21:56:08,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 21:56:08,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-06-27 21:56:09,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 21:56:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558557722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:09,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 21:56:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2024-06-27 21:56:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297262149] [2024-06-27 21:56:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:56:09,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 21:56:09,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 124 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2024-06-27 21:56:09,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:09,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 21:56:09,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:10,365 INFO L124 PetriNetUnfolderBase]: 4051/6158 cut-off events. [2024-06-27 21:56:10,366 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-27 21:56:10,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12467 conditions, 6158 events. 4051/6158 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 31814 event pairs, 1938 based on Foata normal form. 625/5564 useless extension candidates. Maximal degree in co-relation 12295. Up to 3675 conditions per place. [2024-06-27 21:56:10,389 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 186 selfloop transitions, 3 changer transitions 0/192 dead transitions. [2024-06-27 21:56:10,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 192 transitions, 1013 flow [2024-06-27 21:56:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-27 21:56:10,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892255892255892 [2024-06-27 21:56:10,393 INFO L175 Difference]: Start difference. First operand has 85 places, 124 transitions, 496 flow. Second operand 3 states and 175 transitions. [2024-06-27 21:56:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 192 transitions, 1013 flow [2024-06-27 21:56:10,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 192 transitions, 931 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:10,400 INFO L231 Difference]: Finished difference. Result has 85 places, 126 transitions, 437 flow [2024-06-27 21:56:10,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=85, PETRI_TRANSITIONS=126} [2024-06-27 21:56:10,404 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-06-27 21:56:10,404 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 126 transitions, 437 flow [2024-06-27 21:56:10,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2024-06-27 21:56:10,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:10,410 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:10,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:10,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:10,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 610408479, now seen corresponding path program 1 times [2024-06-27 21:56:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403523756] [2024-06-27 21:56:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-06-27 21:56:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403523756] [2024-06-27 21:56:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403523756] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560834434] [2024-06-27 21:56:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:10,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:10,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:11,044 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) [2024-06-27 21:56:11,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 21:56:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:11,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 21:56:11,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-06-27 21:56:11,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:56:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-06-27 21:56:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560834434] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:56:11,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:56:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-06-27 21:56:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853886836] [2024-06-27 21:56:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:56:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 21:56:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 21:56:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-06-27 21:56:11,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:11,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 126 transitions, 437 flow. Second operand has 17 states, 17 states have (on average 9.352941176470589) internal successors, (159), 17 states have internal predecessors, (159), 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) [2024-06-27 21:56:11,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:11,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:12,939 INFO L124 PetriNetUnfolderBase]: 3659/5663 cut-off events. [2024-06-27 21:56:12,939 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-27 21:56:12,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11898 conditions, 5663 events. 3659/5663 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29545 event pairs, 2598 based on Foata normal form. 1/4462 useless extension candidates. Maximal degree in co-relation 11699. Up to 5570 conditions per place. [2024-06-27 21:56:12,958 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 81 selfloop transitions, 44 changer transitions 0/130 dead transitions. [2024-06-27 21:56:12,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 130 transitions, 711 flow [2024-06-27 21:56:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 21:56:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 21:56:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 239 transitions. [2024-06-27 21:56:12,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.15088383838383837 [2024-06-27 21:56:12,961 INFO L175 Difference]: Start difference. First operand has 85 places, 126 transitions, 437 flow. Second operand 16 states and 239 transitions. [2024-06-27 21:56:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 130 transitions, 711 flow [2024-06-27 21:56:12,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:12,964 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 564 flow [2024-06-27 21:56:12,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=564, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2024-06-27 21:56:12,965 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2024-06-27 21:56:12,965 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 564 flow [2024-06-27 21:56:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.352941176470589) internal successors, (159), 17 states have internal predecessors, (159), 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) [2024-06-27 21:56:12,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:12,965 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:12,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:13,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1254847255, now seen corresponding path program 2 times [2024-06-27 21:56:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160145980] [2024-06-27 21:56:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 21:56:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160145980] [2024-06-27 21:56:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160145980] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441085547] [2024-06-27 21:56:13,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 21:56:13,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:13,432 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) [2024-06-27 21:56:13,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 21:56:13,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 21:56:13,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 21:56:13,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-27 21:56:13,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 21:56:13,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 21:56:13,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441085547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:13,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 21:56:13,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-06-27 21:56:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563487701] [2024-06-27 21:56:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:56:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:13,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:56:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 21:56:13,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 21:56:13,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2024-06-27 21:56:13,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:13,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 21:56:13,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:15,497 INFO L124 PetriNetUnfolderBase]: 4751/7311 cut-off events. [2024-06-27 21:56:15,497 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-06-27 21:56:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15551 conditions, 7311 events. 4751/7311 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 39051 event pairs, 1897 based on Foata normal form. 201/6112 useless extension candidates. Maximal degree in co-relation 15469. Up to 3492 conditions per place. [2024-06-27 21:56:15,553 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 277 selfloop transitions, 10 changer transitions 0/290 dead transitions. [2024-06-27 21:56:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 290 transitions, 1483 flow [2024-06-27 21:56:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:56:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:56:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-06-27 21:56:15,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781144781144781 [2024-06-27 21:56:15,555 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 564 flow. Second operand 6 states and 284 transitions. [2024-06-27 21:56:15,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 290 transitions, 1483 flow [2024-06-27 21:56:15,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 290 transitions, 1403 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 21:56:15,577 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 555 flow [2024-06-27 21:56:15,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-27 21:56:15,581 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2024-06-27 21:56:15,581 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 555 flow [2024-06-27 21:56:15,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2024-06-27 21:56:15,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:15,581 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:15,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:15,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:15,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:15,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash -233135353, now seen corresponding path program 3 times [2024-06-27 21:56:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858972432] [2024-06-27 21:56:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:15,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-06-27 21:56:16,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858972432] [2024-06-27 21:56:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858972432] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007602270] [2024-06-27 21:56:16,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 21:56:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:16,044 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) [2024-06-27 21:56:16,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 21:56:16,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 21:56:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 21:56:16,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 19 conjunts are in the unsatisfiable core [2024-06-27 21:56:16,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 21:56:16,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:56:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 21:56:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007602270] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 21:56:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 20 [2024-06-27 21:56:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242638206] [2024-06-27 21:56:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:56:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:56:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-06-27 21:56:16,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 21:56:16,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 555 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2024-06-27 21:56:16,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:16,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 21:56:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:18,255 INFO L124 PetriNetUnfolderBase]: 4085/6352 cut-off events. [2024-06-27 21:56:18,255 INFO L125 PetriNetUnfolderBase]: For 1802/1802 co-relation queries the response was YES. [2024-06-27 21:56:18,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14121 conditions, 6352 events. 4085/6352 cut-off events. For 1802/1802 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34097 event pairs, 3037 based on Foata normal form. 294/5391 useless extension candidates. Maximal degree in co-relation 14046. Up to 6340 conditions per place. [2024-06-27 21:56:18,304 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 131 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2024-06-27 21:56:18,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 807 flow [2024-06-27 21:56:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 21:56:18,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-27 21:56:18,305 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 555 flow. Second operand 3 states and 104 transitions. [2024-06-27 21:56:18,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 807 flow [2024-06-27 21:56:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:18,312 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 541 flow [2024-06-27 21:56:18,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2024-06-27 21:56:18,315 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 27 predicate places. [2024-06-27 21:56:18,315 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 541 flow [2024-06-27 21:56:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2024-06-27 21:56:18,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:18,316 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:18,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:18,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:18,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:18,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:18,529 INFO L85 PathProgramCache]: Analyzing trace with hash -91555691, now seen corresponding path program 1 times [2024-06-27 21:56:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:18,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059585193] [2024-06-27 21:56:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 21:56:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059585193] [2024-06-27 21:56:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059585193] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66991136] [2024-06-27 21:56:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:18,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:18,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:18,777 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) [2024-06-27 21:56:18,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 21:56:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:19,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 21:56:19,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 21:56:19,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:56:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 21:56:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66991136] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:56:19,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:56:19,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-06-27 21:56:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977891264] [2024-06-27 21:56:19,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:56:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 21:56:19,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 21:56:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2024-06-27 21:56:19,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:19,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 541 flow. Second operand has 20 states, 20 states have (on average 9.65) internal successors, (193), 20 states have internal predecessors, (193), 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) [2024-06-27 21:56:19,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:19,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:19,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:20,662 INFO L124 PetriNetUnfolderBase]: 4085/6366 cut-off events. [2024-06-27 21:56:20,662 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-06-27 21:56:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14192 conditions, 6366 events. 4085/6366 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34106 event pairs, 3037 based on Foata normal form. 14/5125 useless extension candidates. Maximal degree in co-relation 14171. Up to 6305 conditions per place. [2024-06-27 21:56:20,682 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 88 selfloop transitions, 58 changer transitions 0/149 dead transitions. [2024-06-27 21:56:20,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 149 transitions, 945 flow [2024-06-27 21:56:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 21:56:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 21:56:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-27 21:56:20,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17965367965367965 [2024-06-27 21:56:20,684 INFO L175 Difference]: Start difference. First operand has 102 places, 135 transitions, 541 flow. Second operand 14 states and 249 transitions. [2024-06-27 21:56:20,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 149 transitions, 945 flow [2024-06-27 21:56:20,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 149 transitions, 944 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:20,688 INFO L231 Difference]: Finished difference. Result has 121 places, 149 transitions, 866 flow [2024-06-27 21:56:20,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=866, PETRI_PLACES=121, PETRI_TRANSITIONS=149} [2024-06-27 21:56:20,689 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2024-06-27 21:56:20,689 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 149 transitions, 866 flow [2024-06-27 21:56:20,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.65) internal successors, (193), 20 states have internal predecessors, (193), 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) [2024-06-27 21:56:20,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:20,689 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:20,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:20,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1745127550, now seen corresponding path program 2 times [2024-06-27 21:56:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946683329] [2024-06-27 21:56:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 21:56:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946683329] [2024-06-27 21:56:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946683329] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596301363] [2024-06-27 21:56:21,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 21:56:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:21,339 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 21:56:21,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 21:56:21,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 21:56:21,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 21:56:21,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 21:56:21,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:21,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 21:56:21,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-06-27 21:56:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 21:56:21,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 21:56:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596301363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:21,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 21:56:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2024-06-27 21:56:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196895871] [2024-06-27 21:56:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2024-06-27 21:56:21,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:21,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 149 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:21,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:21,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:21,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:23,494 INFO L124 PetriNetUnfolderBase]: 4952/7738 cut-off events. [2024-06-27 21:56:23,494 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-27 21:56:23,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17180 conditions, 7738 events. 4952/7738 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 43752 event pairs, 1518 based on Foata normal form. 1/6236 useless extension candidates. Maximal degree in co-relation 17151. Up to 4695 conditions per place. [2024-06-27 21:56:23,556 INFO L140 encePairwiseOnDemand]: 80/99 looper letters, 223 selfloop transitions, 21 changer transitions 9/256 dead transitions. [2024-06-27 21:56:23,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 256 transitions, 1623 flow [2024-06-27 21:56:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:56:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:56:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-06-27 21:56:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 21:56:23,574 INFO L175 Difference]: Start difference. First operand has 121 places, 149 transitions, 866 flow. Second operand 5 states and 230 transitions. [2024-06-27 21:56:23,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 256 transitions, 1623 flow [2024-06-27 21:56:23,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 256 transitions, 1527 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 21:56:23,579 INFO L231 Difference]: Finished difference. Result has 122 places, 165 transitions, 911 flow [2024-06-27 21:56:23,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=122, PETRI_TRANSITIONS=165} [2024-06-27 21:56:23,580 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 47 predicate places. [2024-06-27 21:56:23,580 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 165 transitions, 911 flow [2024-06-27 21:56:23,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:23,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:23,580 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:23,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-06-27 21:56:23,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:23,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1401617702, now seen corresponding path program 3 times [2024-06-27 21:56:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062799340] [2024-06-27 21:56:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 21:56:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062799340] [2024-06-27 21:56:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062799340] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815795376] [2024-06-27 21:56:24,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 21:56:24,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:24,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 21:56:24,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 21:56:24,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 21:56:24,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 21:56:24,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 21:56:24,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:24,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 21:56:24,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-06-27 21:56:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 21:56:24,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 21:56:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815795376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:24,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 21:56:24,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2024-06-27 21:56:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560291538] [2024-06-27 21:56:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:24,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2024-06-27 21:56:24,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:24,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 165 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:24,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:24,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:24,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:26,306 INFO L124 PetriNetUnfolderBase]: 5113/8058 cut-off events. [2024-06-27 21:56:26,306 INFO L125 PetriNetUnfolderBase]: For 2242/2242 co-relation queries the response was YES. [2024-06-27 21:56:26,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20060 conditions, 8058 events. 5113/8058 cut-off events. For 2242/2242 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46681 event pairs, 1524 based on Foata normal form. 1/6516 useless extension candidates. Maximal degree in co-relation 20027. Up to 5004 conditions per place. [2024-06-27 21:56:26,352 INFO L140 encePairwiseOnDemand]: 80/99 looper letters, 221 selfloop transitions, 21 changer transitions 9/254 dead transitions. [2024-06-27 21:56:26,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 254 transitions, 1656 flow [2024-06-27 21:56:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:56:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:56:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-06-27 21:56:26,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585858585858586 [2024-06-27 21:56:26,354 INFO L175 Difference]: Start difference. First operand has 122 places, 165 transitions, 911 flow. Second operand 5 states and 227 transitions. [2024-06-27 21:56:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 254 transitions, 1656 flow [2024-06-27 21:56:26,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 254 transitions, 1648 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:26,390 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 959 flow [2024-06-27 21:56:26,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=959, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2024-06-27 21:56:26,391 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 52 predicate places. [2024-06-27 21:56:26,391 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 959 flow [2024-06-27 21:56:26,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:26,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:26,391 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:26,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-06-27 21:56:26,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:26,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2020241778, now seen corresponding path program 1 times [2024-06-27 21:56:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667463452] [2024-06-27 21:56:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 21:56:27,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667463452] [2024-06-27 21:56:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667463452] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:56:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973564421] [2024-06-27 21:56:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:27,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:56:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:56:27,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 21:56:27,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 21:56:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:27,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 21:56:27,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:56:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 21:56:27,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:56:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 21:56:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973564421] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 21:56:27,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 21:56:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-06-27 21:56:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315503093] [2024-06-27 21:56:27,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 21:56:27,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 21:56:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 21:56:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2024-06-27 21:56:27,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:27,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 959 flow. Second operand has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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) [2024-06-27 21:56:27,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:27,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:27,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:29,797 INFO L124 PetriNetUnfolderBase]: 5100/8036 cut-off events. [2024-06-27 21:56:29,797 INFO L125 PetriNetUnfolderBase]: For 4207/4207 co-relation queries the response was YES. [2024-06-27 21:56:29,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20873 conditions, 8036 events. 5100/8036 cut-off events. For 4207/4207 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 46175 event pairs, 3898 based on Foata normal form. 2/6495 useless extension candidates. Maximal degree in co-relation 20837. Up to 7968 conditions per place. [2024-06-27 21:56:29,831 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 104 selfloop transitions, 60 changer transitions 0/167 dead transitions. [2024-06-27 21:56:29,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 167 transitions, 1307 flow [2024-06-27 21:56:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 21:56:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 21:56:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 281 transitions. [2024-06-27 21:56:29,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14191919191919192 [2024-06-27 21:56:29,834 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 959 flow. Second operand 20 states and 281 transitions. [2024-06-27 21:56:29,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 167 transitions, 1307 flow [2024-06-27 21:56:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 167 transitions, 1283 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:29,851 INFO L231 Difference]: Finished difference. Result has 144 places, 167 transitions, 1085 flow [2024-06-27 21:56:29,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1085, PETRI_PLACES=144, PETRI_TRANSITIONS=167} [2024-06-27 21:56:29,851 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2024-06-27 21:56:29,852 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 167 transitions, 1085 flow [2024-06-27 21:56:29,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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) [2024-06-27 21:56:29,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:29,852 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:29,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-27 21:56:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-27 21:56:30,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:30,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -881969135, now seen corresponding path program 2 times [2024-06-27 21:56:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635974073] [2024-06-27 21:56:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635974073] [2024-06-27 21:56:30,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635974073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:30,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:30,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586013241] [2024-06-27 21:56:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:30,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:30,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 167 transitions, 1085 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-27 21:56:30,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:30,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:30,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:32,093 INFO L124 PetriNetUnfolderBase]: 5014/8143 cut-off events. [2024-06-27 21:56:32,094 INFO L125 PetriNetUnfolderBase]: For 2991/2991 co-relation queries the response was YES. [2024-06-27 21:56:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20776 conditions, 8143 events. 5014/8143 cut-off events. For 2991/2991 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 50205 event pairs, 2165 based on Foata normal form. 306/6843 useless extension candidates. Maximal degree in co-relation 20739. Up to 4351 conditions per place. [2024-06-27 21:56:32,129 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 195 selfloop transitions, 6 changer transitions 18/222 dead transitions. [2024-06-27 21:56:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 1694 flow [2024-06-27 21:56:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-06-27 21:56:32,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622895622895623 [2024-06-27 21:56:32,130 INFO L175 Difference]: Start difference. First operand has 144 places, 167 transitions, 1085 flow. Second operand 3 states and 167 transitions. [2024-06-27 21:56:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 1694 flow [2024-06-27 21:56:32,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 222 transitions, 1502 flow, removed 20 selfloop flow, removed 17 redundant places. [2024-06-27 21:56:32,144 INFO L231 Difference]: Finished difference. Result has 131 places, 173 transitions, 999 flow [2024-06-27 21:56:32,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=999, PETRI_PLACES=131, PETRI_TRANSITIONS=173} [2024-06-27 21:56:32,146 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2024-06-27 21:56:32,146 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 173 transitions, 999 flow [2024-06-27 21:56:32,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-27 21:56:32,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:32,146 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:32,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:56:32,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:32,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2084466517, now seen corresponding path program 3 times [2024-06-27 21:56:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253548991] [2024-06-27 21:56:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:32,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:32,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253548991] [2024-06-27 21:56:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253548991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:32,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933891128] [2024-06-27 21:56:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:32,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:32,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:32,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 173 transitions, 999 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-27 21:56:32,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:32,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:32,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:34,113 INFO L124 PetriNetUnfolderBase]: 4346/7098 cut-off events. [2024-06-27 21:56:34,114 INFO L125 PetriNetUnfolderBase]: For 4360/4360 co-relation queries the response was YES. [2024-06-27 21:56:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18873 conditions, 7098 events. 4346/7098 cut-off events. For 4360/4360 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42415 event pairs, 2457 based on Foata normal form. 91/5727 useless extension candidates. Maximal degree in co-relation 18836. Up to 4383 conditions per place. [2024-06-27 21:56:34,142 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 199 selfloop transitions, 10 changer transitions 4/216 dead transitions. [2024-06-27 21:56:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 216 transitions, 1560 flow [2024-06-27 21:56:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-27 21:56:34,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2024-06-27 21:56:34,144 INFO L175 Difference]: Start difference. First operand has 131 places, 173 transitions, 999 flow. Second operand 3 states and 157 transitions. [2024-06-27 21:56:34,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 216 transitions, 1560 flow [2024-06-27 21:56:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 216 transitions, 1556 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:34,164 INFO L231 Difference]: Finished difference. Result has 134 places, 181 transitions, 1113 flow [2024-06-27 21:56:34,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1113, PETRI_PLACES=134, PETRI_TRANSITIONS=181} [2024-06-27 21:56:34,166 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 59 predicate places. [2024-06-27 21:56:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 181 transitions, 1113 flow [2024-06-27 21:56:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-27 21:56:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:56:34,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -42038725, now seen corresponding path program 1 times [2024-06-27 21:56:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696523777] [2024-06-27 21:56:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696523777] [2024-06-27 21:56:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696523777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321120493] [2024-06-27 21:56:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:34,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:34,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 181 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-27 21:56:34,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:34,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:36,095 INFO L124 PetriNetUnfolderBase]: 4474/7359 cut-off events. [2024-06-27 21:56:36,095 INFO L125 PetriNetUnfolderBase]: For 5624/5624 co-relation queries the response was YES. [2024-06-27 21:56:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20278 conditions, 7359 events. 4474/7359 cut-off events. For 5624/5624 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44640 event pairs, 3561 based on Foata normal form. 6/5868 useless extension candidates. Maximal degree in co-relation 20240. Up to 7027 conditions per place. [2024-06-27 21:56:36,128 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 201 selfloop transitions, 3 changer transitions 10/217 dead transitions. [2024-06-27 21:56:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 217 transitions, 1643 flow [2024-06-27 21:56:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:56:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:56:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-06-27 21:56:36,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 21:56:36,130 INFO L175 Difference]: Start difference. First operand has 134 places, 181 transitions, 1113 flow. Second operand 4 states and 153 transitions. [2024-06-27 21:56:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 217 transitions, 1643 flow [2024-06-27 21:56:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 217 transitions, 1633 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:36,159 INFO L231 Difference]: Finished difference. Result has 138 places, 181 transitions, 1118 flow [2024-06-27 21:56:36,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1118, PETRI_PLACES=138, PETRI_TRANSITIONS=181} [2024-06-27 21:56:36,160 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 63 predicate places. [2024-06-27 21:56:36,160 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 181 transitions, 1118 flow [2024-06-27 21:56:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-27 21:56:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:56:36,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1066419423, now seen corresponding path program 2 times [2024-06-27 21:56:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860414911] [2024-06-27 21:56:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860414911] [2024-06-27 21:56:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860414911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949231451] [2024-06-27 21:56:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:36,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:36,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 181 transitions, 1118 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-27 21:56:36,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:36,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:36,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:38,227 INFO L124 PetriNetUnfolderBase]: 4571/7554 cut-off events. [2024-06-27 21:56:38,227 INFO L125 PetriNetUnfolderBase]: For 5193/5193 co-relation queries the response was YES. [2024-06-27 21:56:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20850 conditions, 7554 events. 4571/7554 cut-off events. For 5193/5193 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 46715 event pairs, 1509 based on Foata normal form. 1/6030 useless extension candidates. Maximal degree in co-relation 20810. Up to 4895 conditions per place. [2024-06-27 21:56:38,257 INFO L140 encePairwiseOnDemand]: 80/99 looper letters, 219 selfloop transitions, 30 changer transitions 9/261 dead transitions. [2024-06-27 21:56:38,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 261 transitions, 1869 flow [2024-06-27 21:56:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:56:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:56:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-06-27 21:56:38,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 21:56:38,259 INFO L175 Difference]: Start difference. First operand has 138 places, 181 transitions, 1118 flow. Second operand 5 states and 220 transitions. [2024-06-27 21:56:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 261 transitions, 1869 flow [2024-06-27 21:56:38,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 261 transitions, 1861 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:38,277 INFO L231 Difference]: Finished difference. Result has 141 places, 181 transitions, 1182 flow [2024-06-27 21:56:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1182, PETRI_PLACES=141, PETRI_TRANSITIONS=181} [2024-06-27 21:56:38,278 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:38,278 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 181 transitions, 1182 flow [2024-06-27 21:56:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-27 21:56:38,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:38,279 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:38,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:56:38,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:38,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:38,280 INFO L85 PathProgramCache]: Analyzing trace with hash -743737038, now seen corresponding path program 1 times [2024-06-27 21:56:38,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:38,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921947615] [2024-06-27 21:56:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 21:56:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:38,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921947615] [2024-06-27 21:56:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921947615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:38,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892471730] [2024-06-27 21:56:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:38,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:38,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:38,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 181 transitions, 1182 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-27 21:56:38,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:38,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:38,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:39,983 INFO L124 PetriNetUnfolderBase]: 4553/7525 cut-off events. [2024-06-27 21:56:39,983 INFO L125 PetriNetUnfolderBase]: For 7159/7159 co-relation queries the response was YES. [2024-06-27 21:56:40,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21409 conditions, 7525 events. 4553/7525 cut-off events. For 7159/7159 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 46126 event pairs, 3505 based on Foata normal form. 9/6009 useless extension candidates. Maximal degree in co-relation 21367. Up to 6900 conditions per place. [2024-06-27 21:56:40,034 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 189 selfloop transitions, 4 changer transitions 31/227 dead transitions. [2024-06-27 21:56:40,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 227 transitions, 1756 flow [2024-06-27 21:56:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-06-27 21:56:40,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218855218855218 [2024-06-27 21:56:40,037 INFO L175 Difference]: Start difference. First operand has 141 places, 181 transitions, 1182 flow. Second operand 3 states and 155 transitions. [2024-06-27 21:56:40,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 227 transitions, 1756 flow [2024-06-27 21:56:40,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 227 transitions, 1720 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:40,060 INFO L231 Difference]: Finished difference. Result has 141 places, 179 transitions, 1138 flow [2024-06-27 21:56:40,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1138, PETRI_PLACES=141, PETRI_TRANSITIONS=179} [2024-06-27 21:56:40,061 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:40,061 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 179 transitions, 1138 flow [2024-06-27 21:56:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-27 21:56:40,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:40,062 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:56:40,062 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:40,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash -291029570, now seen corresponding path program 2 times [2024-06-27 21:56:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227354587] [2024-06-27 21:56:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 21:56:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227354587] [2024-06-27 21:56:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227354587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043627823] [2024-06-27 21:56:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:40,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:40,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 179 transitions, 1138 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-27 21:56:40,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:40,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:40,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:41,680 INFO L124 PetriNetUnfolderBase]: 4204/6916 cut-off events. [2024-06-27 21:56:41,680 INFO L125 PetriNetUnfolderBase]: For 5344/5344 co-relation queries the response was YES. [2024-06-27 21:56:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19496 conditions, 6916 events. 4204/6916 cut-off events. For 5344/5344 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41972 event pairs, 985 based on Foata normal form. 54/5521 useless extension candidates. Maximal degree in co-relation 19460. Up to 5825 conditions per place. [2024-06-27 21:56:41,718 INFO L140 encePairwiseOnDemand]: 83/99 looper letters, 181 selfloop transitions, 14 changer transitions 5/203 dead transitions. [2024-06-27 21:56:41,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 203 transitions, 1542 flow [2024-06-27 21:56:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-06-27 21:56:41,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2024-06-27 21:56:41,720 INFO L175 Difference]: Start difference. First operand has 141 places, 179 transitions, 1138 flow. Second operand 3 states and 151 transitions. [2024-06-27 21:56:41,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 203 transitions, 1542 flow [2024-06-27 21:56:41,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 203 transitions, 1538 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:41,734 INFO L231 Difference]: Finished difference. Result has 141 places, 170 transitions, 1085 flow [2024-06-27 21:56:41,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1085, PETRI_PLACES=141, PETRI_TRANSITIONS=170} [2024-06-27 21:56:41,734 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:41,734 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 170 transitions, 1085 flow [2024-06-27 21:56:41,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-27 21:56:41,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:41,735 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:41,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 21:56:41,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:41,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1001371118, now seen corresponding path program 1 times [2024-06-27 21:56:41,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:41,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687072647] [2024-06-27 21:56:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687072647] [2024-06-27 21:56:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687072647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:42,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:42,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688668407] [2024-06-27 21:56:42,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:42,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:42,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:42,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:42,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 170 transitions, 1085 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:42,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:42,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:43,972 INFO L124 PetriNetUnfolderBase]: 4087/6827 cut-off events. [2024-06-27 21:56:43,973 INFO L125 PetriNetUnfolderBase]: For 5366/5366 co-relation queries the response was YES. [2024-06-27 21:56:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19359 conditions, 6827 events. 4087/6827 cut-off events. For 5366/5366 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41862 event pairs, 3009 based on Foata normal form. 54/5600 useless extension candidates. Maximal degree in co-relation 19323. Up to 5822 conditions per place. [2024-06-27 21:56:44,008 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 194 selfloop transitions, 12 changer transitions 8/217 dead transitions. [2024-06-27 21:56:44,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 217 transitions, 1654 flow [2024-06-27 21:56:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-27 21:56:44,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2024-06-27 21:56:44,009 INFO L175 Difference]: Start difference. First operand has 141 places, 170 transitions, 1085 flow. Second operand 3 states and 157 transitions. [2024-06-27 21:56:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 217 transitions, 1654 flow [2024-06-27 21:56:44,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 217 transitions, 1606 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:44,024 INFO L231 Difference]: Finished difference. Result has 141 places, 174 transitions, 1137 flow [2024-06-27 21:56:44,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1137, PETRI_PLACES=141, PETRI_TRANSITIONS=174} [2024-06-27 21:56:44,025 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:44,025 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 174 transitions, 1137 flow [2024-06-27 21:56:44,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:44,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:44,026 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 21:56:44,026 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:44,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1137932754, now seen corresponding path program 2 times [2024-06-27 21:56:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52483171] [2024-06-27 21:56:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:44,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:44,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52483171] [2024-06-27 21:56:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52483171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:44,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:44,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717260469] [2024-06-27 21:56:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:44,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:44,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 174 transitions, 1137 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:44,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:44,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:44,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:45,942 INFO L124 PetriNetUnfolderBase]: 3877/6493 cut-off events. [2024-06-27 21:56:45,943 INFO L125 PetriNetUnfolderBase]: For 5535/5535 co-relation queries the response was YES. [2024-06-27 21:56:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17970 conditions, 6493 events. 3877/6493 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39599 event pairs, 2341 based on Foata normal form. 100/5330 useless extension candidates. Maximal degree in co-relation 17933. Up to 4138 conditions per place. [2024-06-27 21:56:45,968 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 183 selfloop transitions, 6 changer transitions 7/199 dead transitions. [2024-06-27 21:56:45,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 199 transitions, 1500 flow [2024-06-27 21:56:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-06-27 21:56:45,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-27 21:56:45,970 INFO L175 Difference]: Start difference. First operand has 141 places, 174 transitions, 1137 flow. Second operand 3 states and 147 transitions. [2024-06-27 21:56:45,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 199 transitions, 1500 flow [2024-06-27 21:56:45,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 199 transitions, 1482 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:45,984 INFO L231 Difference]: Finished difference. Result has 142 places, 166 transitions, 1021 flow [2024-06-27 21:56:45,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1021, PETRI_PLACES=142, PETRI_TRANSITIONS=166} [2024-06-27 21:56:45,992 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-06-27 21:56:45,992 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 166 transitions, 1021 flow [2024-06-27 21:56:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:45,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:45,992 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 21:56:45,993 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:45,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash -692548033, now seen corresponding path program 1 times [2024-06-27 21:56:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:45,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51290478] [2024-06-27 21:56:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:45,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51290478] [2024-06-27 21:56:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51290478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309530494] [2024-06-27 21:56:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:46,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 166 transitions, 1021 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:46,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:46,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:47,929 INFO L124 PetriNetUnfolderBase]: 3961/6713 cut-off events. [2024-06-27 21:56:47,929 INFO L125 PetriNetUnfolderBase]: For 4105/4105 co-relation queries the response was YES. [2024-06-27 21:56:47,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 6713 events. 3961/6713 cut-off events. For 4105/4105 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42076 event pairs, 2314 based on Foata normal form. 59/5464 useless extension candidates. Maximal degree in co-relation 18392. Up to 4086 conditions per place. [2024-06-27 21:56:47,971 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 179 selfloop transitions, 11 changer transitions 8/201 dead transitions. [2024-06-27 21:56:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 201 transitions, 1509 flow [2024-06-27 21:56:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-06-27 21:56:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-27 21:56:47,972 INFO L175 Difference]: Start difference. First operand has 142 places, 166 transitions, 1021 flow. Second operand 3 states and 147 transitions. [2024-06-27 21:56:47,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 201 transitions, 1509 flow [2024-06-27 21:56:47,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 201 transitions, 1467 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:56:47,988 INFO L231 Difference]: Finished difference. Result has 141 places, 167 transitions, 1039 flow [2024-06-27 21:56:47,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1039, PETRI_PLACES=141, PETRI_TRANSITIONS=167} [2024-06-27 21:56:47,989 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:47,989 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 167 transitions, 1039 flow [2024-06-27 21:56:47,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:47,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:47,989 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:47,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 21:56:47,989 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:47,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1155317905, now seen corresponding path program 2 times [2024-06-27 21:56:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099309125] [2024-06-27 21:56:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099309125] [2024-06-27 21:56:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099309125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477346447] [2024-06-27 21:56:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:48,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:48,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 167 transitions, 1039 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:48,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:48,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:48,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:49,814 INFO L124 PetriNetUnfolderBase]: 3832/6487 cut-off events. [2024-06-27 21:56:49,815 INFO L125 PetriNetUnfolderBase]: For 4523/4523 co-relation queries the response was YES. [2024-06-27 21:56:49,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17231 conditions, 6487 events. 3832/6487 cut-off events. For 4523/4523 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40006 event pairs, 3097 based on Foata normal form. 27/5231 useless extension candidates. Maximal degree in co-relation 17197. Up to 5869 conditions per place. [2024-06-27 21:56:49,850 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 174 selfloop transitions, 2 changer transitions 15/194 dead transitions. [2024-06-27 21:56:49,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 194 transitions, 1427 flow [2024-06-27 21:56:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-06-27 21:56:49,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-27 21:56:49,851 INFO L175 Difference]: Start difference. First operand has 141 places, 167 transitions, 1039 flow. Second operand 3 states and 145 transitions. [2024-06-27 21:56:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 194 transitions, 1427 flow [2024-06-27 21:56:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 194 transitions, 1416 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:49,869 INFO L231 Difference]: Finished difference. Result has 141 places, 157 transitions, 929 flow [2024-06-27 21:56:49,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=929, PETRI_PLACES=141, PETRI_TRANSITIONS=157} [2024-06-27 21:56:49,870 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2024-06-27 21:56:49,870 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 157 transitions, 929 flow [2024-06-27 21:56:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-27 21:56:49,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:49,870 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 21:56:49,871 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 575998635, now seen corresponding path program 1 times [2024-06-27 21:56:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115648439] [2024-06-27 21:56:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:49,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115648439] [2024-06-27 21:56:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115648439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:49,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509543616] [2024-06-27 21:56:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:49,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:49,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 157 transitions, 929 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:49,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:49,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:49,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:51,019 INFO L124 PetriNetUnfolderBase]: 3336/5665 cut-off events. [2024-06-27 21:56:51,019 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2024-06-27 21:56:51,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14803 conditions, 5665 events. 3336/5665 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34148 event pairs, 2185 based on Foata normal form. 41/4679 useless extension candidates. Maximal degree in co-relation 14770. Up to 3918 conditions per place. [2024-06-27 21:56:51,041 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 162 selfloop transitions, 5 changer transitions 15/185 dead transitions. [2024-06-27 21:56:51,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 185 transitions, 1334 flow [2024-06-27 21:56:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-06-27 21:56:51,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 21:56:51,042 INFO L175 Difference]: Start difference. First operand has 141 places, 157 transitions, 929 flow. Second operand 3 states and 135 transitions. [2024-06-27 21:56:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 185 transitions, 1334 flow [2024-06-27 21:56:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 185 transitions, 1292 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 21:56:51,052 INFO L231 Difference]: Finished difference. Result has 135 places, 153 transitions, 866 flow [2024-06-27 21:56:51,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=866, PETRI_PLACES=135, PETRI_TRANSITIONS=153} [2024-06-27 21:56:51,053 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 60 predicate places. [2024-06-27 21:56:51,053 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 153 transitions, 866 flow [2024-06-27 21:56:51,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:51,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:51,053 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 21:56:51,054 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:51,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1720535531, now seen corresponding path program 1 times [2024-06-27 21:56:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396148439] [2024-06-27 21:56:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:51,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396148439] [2024-06-27 21:56:51,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396148439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693034392] [2024-06-27 21:56:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:51,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:51,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 153 transitions, 866 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:51,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:52,127 INFO L124 PetriNetUnfolderBase]: 3186/5407 cut-off events. [2024-06-27 21:56:52,127 INFO L125 PetriNetUnfolderBase]: For 2232/2232 co-relation queries the response was YES. [2024-06-27 21:56:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13736 conditions, 5407 events. 3186/5407 cut-off events. For 2232/2232 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 32082 event pairs, 2781 based on Foata normal form. 4/4483 useless extension candidates. Maximal degree in co-relation 13705. Up to 5289 conditions per place. [2024-06-27 21:56:52,153 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 147 selfloop transitions, 0 changer transitions 14/164 dead transitions. [2024-06-27 21:56:52,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 164 transitions, 1215 flow [2024-06-27 21:56:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 21:56:52,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-27 21:56:52,156 INFO L175 Difference]: Start difference. First operand has 135 places, 153 transitions, 866 flow. Second operand 3 states and 111 transitions. [2024-06-27 21:56:52,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 164 transitions, 1215 flow [2024-06-27 21:56:52,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 164 transitions, 1207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:52,167 INFO L231 Difference]: Finished difference. Result has 134 places, 150 transitions, 836 flow [2024-06-27 21:56:52,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=134, PETRI_TRANSITIONS=150} [2024-06-27 21:56:52,173 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 59 predicate places. [2024-06-27 21:56:52,173 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 150 transitions, 836 flow [2024-06-27 21:56:52,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:52,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:52,173 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 21:56:52,174 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:52,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1348527445, now seen corresponding path program 1 times [2024-06-27 21:56:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552521657] [2024-06-27 21:56:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552521657] [2024-06-27 21:56:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552521657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:52,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843465200] [2024-06-27 21:56:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:52,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:52,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:52,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 150 transitions, 836 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:52,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:52,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:52,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:53,457 INFO L124 PetriNetUnfolderBase]: 2997/5098 cut-off events. [2024-06-27 21:56:53,457 INFO L125 PetriNetUnfolderBase]: For 1931/1931 co-relation queries the response was YES. [2024-06-27 21:56:53,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12835 conditions, 5098 events. 2997/5098 cut-off events. For 1931/1931 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29889 event pairs, 2567 based on Foata normal form. 1/4286 useless extension candidates. Maximal degree in co-relation 12804. Up to 4905 conditions per place. [2024-06-27 21:56:53,477 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 150 selfloop transitions, 1 changer transitions 20/174 dead transitions. [2024-06-27 21:56:53,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 174 transitions, 1231 flow [2024-06-27 21:56:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:56:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:56:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 21:56:53,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-27 21:56:53,478 INFO L175 Difference]: Start difference. First operand has 134 places, 150 transitions, 836 flow. Second operand 4 states and 129 transitions. [2024-06-27 21:56:53,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 174 transitions, 1231 flow [2024-06-27 21:56:53,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 174 transitions, 1231 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 21:56:53,485 INFO L231 Difference]: Finished difference. Result has 135 places, 148 transitions, 824 flow [2024-06-27 21:56:53,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=824, PETRI_PLACES=135, PETRI_TRANSITIONS=148} [2024-06-27 21:56:53,485 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 60 predicate places. [2024-06-27 21:56:53,485 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 148 transitions, 824 flow [2024-06-27 21:56:53,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:53,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:53,486 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 21:56:53,486 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:53,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1731017865, now seen corresponding path program 2 times [2024-06-27 21:56:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075392734] [2024-06-27 21:56:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075392734] [2024-06-27 21:56:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075392734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179066914] [2024-06-27 21:56:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:53,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:53,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 148 transitions, 824 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:53,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:53,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:53,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:54,607 INFO L124 PetriNetUnfolderBase]: 2909/4936 cut-off events. [2024-06-27 21:56:54,607 INFO L125 PetriNetUnfolderBase]: For 1878/1878 co-relation queries the response was YES. [2024-06-27 21:56:54,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 4936 events. 2909/4936 cut-off events. For 1878/1878 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 28581 event pairs, 2505 based on Foata normal form. 1/4139 useless extension candidates. Maximal degree in co-relation 12373. Up to 4799 conditions per place. [2024-06-27 21:56:54,630 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 140 selfloop transitions, 0 changer transitions 22/165 dead transitions. [2024-06-27 21:56:54,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 165 transitions, 1196 flow [2024-06-27 21:56:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:56:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:56:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-27 21:56:54,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-27 21:56:54,636 INFO L175 Difference]: Start difference. First operand has 135 places, 148 transitions, 824 flow. Second operand 4 states and 121 transitions. [2024-06-27 21:56:54,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 165 transitions, 1196 flow [2024-06-27 21:56:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 165 transitions, 1193 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:54,645 INFO L231 Difference]: Finished difference. Result has 136 places, 143 transitions, 800 flow [2024-06-27 21:56:54,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=800, PETRI_PLACES=136, PETRI_TRANSITIONS=143} [2024-06-27 21:56:54,646 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2024-06-27 21:56:54,646 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 143 transitions, 800 flow [2024-06-27 21:56:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:54,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:54,647 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:54,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 21:56:54,647 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:54,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 6064804, now seen corresponding path program 1 times [2024-06-27 21:56:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760202054] [2024-06-27 21:56:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:54,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:54,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760202054] [2024-06-27 21:56:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760202054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:54,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832661331] [2024-06-27 21:56:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:54,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:54,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 800 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:54,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:54,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:54,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:55,741 INFO L124 PetriNetUnfolderBase]: 2512/4279 cut-off events. [2024-06-27 21:56:55,742 INFO L125 PetriNetUnfolderBase]: For 1673/1673 co-relation queries the response was YES. [2024-06-27 21:56:55,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10798 conditions, 4279 events. 2512/4279 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23888 event pairs, 2111 based on Foata normal form. 1/3683 useless extension candidates. Maximal degree in co-relation 10765. Up to 4099 conditions per place. [2024-06-27 21:56:55,758 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 143 selfloop transitions, 1 changer transitions 19/166 dead transitions. [2024-06-27 21:56:55,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 1179 flow [2024-06-27 21:56:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:56:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:56:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 21:56:55,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-27 21:56:55,759 INFO L175 Difference]: Start difference. First operand has 136 places, 143 transitions, 800 flow. Second operand 4 states and 123 transitions. [2024-06-27 21:56:55,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 1179 flow [2024-06-27 21:56:55,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 166 transitions, 1169 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:55,765 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 781 flow [2024-06-27 21:56:55,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2024-06-27 21:56:55,766 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 55 predicate places. [2024-06-27 21:56:55,766 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 781 flow [2024-06-27 21:56:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:55,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:55,767 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:55,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 21:56:55,767 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:55,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1941251606, now seen corresponding path program 2 times [2024-06-27 21:56:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361442811] [2024-06-27 21:56:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361442811] [2024-06-27 21:56:55,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361442811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:55,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:55,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7360864] [2024-06-27 21:56:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:55,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:55,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 781 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:55,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:55,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:55,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:56,753 INFO L124 PetriNetUnfolderBase]: 2431/4129 cut-off events. [2024-06-27 21:56:56,754 INFO L125 PetriNetUnfolderBase]: For 1320/1320 co-relation queries the response was YES. [2024-06-27 21:56:56,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10356 conditions, 4129 events. 2431/4129 cut-off events. For 1320/1320 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22738 event pairs, 2061 based on Foata normal form. 1/3543 useless extension candidates. Maximal degree in co-relation 10324. Up to 4013 conditions per place. [2024-06-27 21:56:56,773 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 129 selfloop transitions, 0 changer transitions 24/156 dead transitions. [2024-06-27 21:56:56,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 156 transitions, 1131 flow [2024-06-27 21:56:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:56:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:56:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-27 21:56:56,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-27 21:56:56,775 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 781 flow. Second operand 4 states and 114 transitions. [2024-06-27 21:56:56,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 156 transitions, 1131 flow [2024-06-27 21:56:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 156 transitions, 1126 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:56,781 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 748 flow [2024-06-27 21:56:56,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=748, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2024-06-27 21:56:56,781 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2024-06-27 21:56:56,781 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 748 flow [2024-06-27 21:56:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 21:56:56,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:56,782 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 21:56:56,782 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:56,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1870171551, now seen corresponding path program 1 times [2024-06-27 21:56:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188407928] [2024-06-27 21:56:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 21:56:57,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:57,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188407928] [2024-06-27 21:56:57,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188407928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:57,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:57,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:57,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929140350] [2024-06-27 21:56:57,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:57,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:57,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:57,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:57,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:57,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:57,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:57,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:57,568 INFO L124 PetriNetUnfolderBase]: 1593/2729 cut-off events. [2024-06-27 21:56:57,568 INFO L125 PetriNetUnfolderBase]: For 969/969 co-relation queries the response was YES. [2024-06-27 21:56:57,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 2729 events. 1593/2729 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13725 event pairs, 1196 based on Foata normal form. 26/2398 useless extension candidates. Maximal degree in co-relation 6974. Up to 2312 conditions per place. [2024-06-27 21:56:57,583 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 138 selfloop transitions, 5 changer transitions 3/149 dead transitions. [2024-06-27 21:56:57,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 149 transitions, 1086 flow [2024-06-27 21:56:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 21:56:57,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-27 21:56:57,584 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 748 flow. Second operand 3 states and 103 transitions. [2024-06-27 21:56:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 149 transitions, 1086 flow [2024-06-27 21:56:57,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 1070 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:57,589 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 751 flow [2024-06-27 21:56:57,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=751, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-06-27 21:56:57,590 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 44 predicate places. [2024-06-27 21:56:57,590 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 751 flow [2024-06-27 21:56:57,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:57,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:57,590 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:57,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 21:56:57,591 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:57,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:57,591 INFO L85 PathProgramCache]: Analyzing trace with hash 64887146, now seen corresponding path program 1 times [2024-06-27 21:56:57,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:57,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263752263] [2024-06-27 21:56:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-27 21:56:57,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:57,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263752263] [2024-06-27 21:56:57,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263752263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:57,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:57,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:57,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674747505] [2024-06-27 21:56:57,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:57,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:57,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:57,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 751 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:57,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:57,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:57,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:58,389 INFO L124 PetriNetUnfolderBase]: 1665/2849 cut-off events. [2024-06-27 21:56:58,389 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-06-27 21:56:58,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 2849 events. 1665/2849 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14255 event pairs, 967 based on Foata normal form. 12/2484 useless extension candidates. Maximal degree in co-relation 7282. Up to 1899 conditions per place. [2024-06-27 21:56:58,404 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 146 selfloop transitions, 3 changer transitions 4/156 dead transitions. [2024-06-27 21:56:58,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 156 transitions, 1122 flow [2024-06-27 21:56:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 21:56:58,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-27 21:56:58,405 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 751 flow. Second operand 3 states and 107 transitions. [2024-06-27 21:56:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 156 transitions, 1122 flow [2024-06-27 21:56:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 156 transitions, 1112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:58,410 INFO L231 Difference]: Finished difference. Result has 120 places, 133 transitions, 760 flow [2024-06-27 21:56:58,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=120, PETRI_TRANSITIONS=133} [2024-06-27 21:56:58,412 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2024-06-27 21:56:58,412 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 133 transitions, 760 flow [2024-06-27 21:56:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-27 21:56:58,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:58,412 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 21:56:58,412 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:58,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash -159630049, now seen corresponding path program 1 times [2024-06-27 21:56:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737225626] [2024-06-27 21:56:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:56:58,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737225626] [2024-06-27 21:56:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737225626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:58,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:58,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560246066] [2024-06-27 21:56:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:56:58,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:56:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:56:58,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 21:56:58,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 133 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:58,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:58,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 21:56:58,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:59,298 INFO L124 PetriNetUnfolderBase]: 1714/2946 cut-off events. [2024-06-27 21:56:59,298 INFO L125 PetriNetUnfolderBase]: For 1157/1157 co-relation queries the response was YES. [2024-06-27 21:56:59,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 2946 events. 1714/2946 cut-off events. For 1157/1157 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14955 event pairs, 1250 based on Foata normal form. 35/2584 useless extension candidates. Maximal degree in co-relation 7598. Up to 2480 conditions per place. [2024-06-27 21:56:59,313 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 148 selfloop transitions, 3 changer transitions 2/156 dead transitions. [2024-06-27 21:56:59,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 156 transitions, 1121 flow [2024-06-27 21:56:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:56:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:56:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 21:56:59,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-27 21:56:59,314 INFO L175 Difference]: Start difference. First operand has 120 places, 133 transitions, 760 flow. Second operand 3 states and 107 transitions. [2024-06-27 21:56:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 156 transitions, 1121 flow [2024-06-27 21:56:59,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 156 transitions, 1114 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 21:56:59,319 INFO L231 Difference]: Finished difference. Result has 122 places, 133 transitions, 766 flow [2024-06-27 21:56:59,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=766, PETRI_PLACES=122, PETRI_TRANSITIONS=133} [2024-06-27 21:56:59,320 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 47 predicate places. [2024-06-27 21:56:59,320 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 133 transitions, 766 flow [2024-06-27 21:56:59,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:59,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:59,320 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:59,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 21:56:59,321 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 21:56:59,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1964899556, now seen corresponding path program 1 times [2024-06-27 21:56:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633284507] [2024-06-27 21:56:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:57:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:57:04,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:57:04,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633284507] [2024-06-27 21:57:04,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633284507] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 21:57:04,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228063207] [2024-06-27 21:57:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:57:04,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 21:57:04,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:57:04,626 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 21:57:04,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 21:57:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:57:05,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 33 conjunts are in the unsatisfiable core [2024-06-27 21:57:05,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 21:57:08,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 21:57:08,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 242 treesize of output 1259 [2024-06-27 21:59:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-27 21:59:22,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 21:59:30,062 INFO L349 Elim1Store]: treesize reduction 13, result has 98.5 percent of original size [2024-06-27 21:59:30,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 785 treesize of output 1340 [2024-06-27 22:02:13,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-06-27 22:02:13,641 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-06-27 22:02:13,642 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-06-27 22:02:13,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-06-27 22:02:13,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-06-27 22:02:13,853 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-06-27 22:02:13,857 INFO L158 Benchmark]: Toolchain (without parser) took 373734.24ms. Allocated memory was 163.6MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 103.9MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2024-06-27 22:02:13,858 INFO L158 Benchmark]: Witness Parser took 1.21ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 22:02:13,858 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 22:02:13,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.95ms. Allocated memory is still 163.6MB. Free memory was 103.5MB in the beginning and 121.9MB in the end (delta: -18.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-06-27 22:02:13,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.54ms. Allocated memory is still 163.6MB. Free memory was 121.9MB in the beginning and 113.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-27 22:02:13,859 INFO L158 Benchmark]: Boogie Preprocessor took 97.44ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-27 22:02:13,860 INFO L158 Benchmark]: RCFGBuilder took 2501.87ms. Allocated memory was 163.6MB in the beginning and 316.7MB in the end (delta: 153.1MB). Free memory was 103.0MB in the beginning and 182.2MB in the end (delta: -79.2MB). Peak memory consumption was 101.9MB. Max. memory is 16.1GB. [2024-06-27 22:02:13,860 INFO L158 Benchmark]: TraceAbstraction took 370591.33ms. Allocated memory was 316.7MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 181.2MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2024-06-27 22:02:13,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 1.21ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.95ms. Allocated memory is still 163.6MB. Free memory was 103.5MB in the beginning and 121.9MB in the end (delta: -18.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.54ms. Allocated memory is still 163.6MB. Free memory was 121.9MB in the beginning and 113.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.44ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2501.87ms. Allocated memory was 163.6MB in the beginning and 316.7MB in the end (delta: 153.1MB). Free memory was 103.0MB in the beginning and 182.2MB in the end (delta: -79.2MB). Peak memory consumption was 101.9MB. Max. memory is 16.1GB. * TraceAbstraction took 370591.33ms. Allocated memory was 316.7MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 181.2MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:02:15,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:02:15,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-06-27 22:02:15,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:02:15,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:02:15,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:02:15,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:02:15,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:02:15,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:02:15,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:02:15,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:02:15,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:02:16,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:02:16,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:02:16,001 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:02:16,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:02:16,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:02:16,002 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:02:16,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:02:16,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:02:16,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:02:16,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:02:16,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:02:16,004 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-06-27 22:02:16,004 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-06-27 22:02:16,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:02:16,005 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-06-27 22:02:16,005 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:02:16,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:02:16,005 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:02:16,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:02:16,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:02:16,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:02:16,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:02:16,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:02:16,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:02:16,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:02:16,009 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:02:16,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:02:16,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:02:16,009 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-06-27 22:02:16,009 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:02:16,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:02:16,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:02:16,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:02:16,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:02:16,304 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:02:16,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 22:02:17,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:02:17,648 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:02:17,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-27 22:02:17,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a6c7a08/b8835acac5b74033b136884800e2639e/FLAG0c43e80d7 [2024-06-27 22:02:17,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a6c7a08/b8835acac5b74033b136884800e2639e [2024-06-27 22:02:17,681 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:02:17,681 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:02:17,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-27 22:02:17,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:02:17,773 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:02:17,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:02:17,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:02:17,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:02:17,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:02:17" (1/2) ... [2024-06-27 22:02:17,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e0382d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:02:17, skipping insertion in model container [2024-06-27 22:02:17,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:02:17" (1/2) ... [2024-06-27 22:02:17,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55ccb871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:02:17, skipping insertion in model container [2024-06-27 22:02:17,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:02:17" (2/2) ... [2024-06-27 22:02:17,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e0382d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:17, skipping insertion in model container [2024-06-27 22:02:17,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:02:17" (2/2) ... [2024-06-27 22:02:17,783 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:02:17,801 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:02:17,801 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] ! multithreaded || ((0LL - (long long )break_10) + (long long )i1_9 >= 0LL && (0LL - (long long )break_15) + (long long )i1_14 >= 0LL) [2024-06-27 22:02:17,802 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] ! multithreaded || ((0LL - (long long )break_10) + (long long )i1_9 >= 0LL && (0LL - (long long )break_15) + (long long )i1_14 >= 0LL) [2024-06-27 22:02:17,802 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:02:17,802 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-27 22:02:17,829 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:02:18,078 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 22:02:18,098 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:02:18,112 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-06-27 22:02:18,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:02:18,207 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 22:02:18,210 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:02:18,214 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:02:18,335 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-27 22:02:18,338 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:02:18,357 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:02:18,358 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18 WrapperNode [2024-06-27 22:02:18,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:02:18,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:02:18,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:02:18,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:02:18,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,444 INFO L138 Inliner]: procedures = 26, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1548 [2024-06-27 22:02:18,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:02:18,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:02:18,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:02:18,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:02:18,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,489 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-27 22:02:18,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:02:18,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:02:18,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:02:18,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:02:18,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (1/1) ... [2024-06-27 22:02:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:02:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:02:18,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:02:18,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:02:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:02:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-06-27 22:02:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-06-27 22:02:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-06-27 22:02:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-06-27 22:02:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 22:02:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 22:02:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:02:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:02:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-06-27 22:02:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-06-27 22:02:18,690 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:02:18,872 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:02:18,874 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:02:20,409 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:02:20,410 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:02:22,047 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:02:22,047 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-27 22:02:22,047 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:02:22 BoogieIcfgContainer [2024-06-27 22:02:22,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:02:22,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:02:22,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:02:22,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:02:22,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:02:17" (1/4) ... [2024-06-27 22:02:22,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efd0c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:02:22, skipping insertion in model container [2024-06-27 22:02:22,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:02:17" (2/4) ... [2024-06-27 22:02:22,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efd0c99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:02:22, skipping insertion in model container [2024-06-27 22:02:22,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:02:18" (3/4) ... [2024-06-27 22:02:22,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efd0c99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:02:22, skipping insertion in model container [2024-06-27 22:02:22,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:02:22" (4/4) ... [2024-06-27 22:02:22,056 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-27 22:02:22,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:02:22,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 22:02:22,071 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:02:22,325 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 22:02:22,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 22:02:22,388 INFO L124 PetriNetUnfolderBase]: 28/97 cut-off events. [2024-06-27 22:02:22,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 22:02:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 28/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-27 22:02:22,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 99 transitions, 212 flow [2024-06-27 22:02:22,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 96 transitions, 204 flow [2024-06-27 22:02:22,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:02:22,405 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=LoopHeads, 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;@2455dfc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:02:22,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 22:02:22,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:02:22,412 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-27 22:02:22,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:02:22,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:22,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:22,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:22,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1944083913, now seen corresponding path program 1 times [2024-06-27 22:02:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639062095] [2024-06-27 22:02:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:22,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:22,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:22,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:22,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-06-27 22:02:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:22,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 22:02:22,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:22,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 22:02:22,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:22,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639062095] [2024-06-27 22:02:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639062095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:22,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:22,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:02:22,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601509875] [2024-06-27 22:02:22,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:22,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:02:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:02:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:02:22,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 22:02:22,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 22:02:22,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:22,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 22:02:22,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:24,111 INFO L124 PetriNetUnfolderBase]: 2533/3811 cut-off events. [2024-06-27 22:02:24,111 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-06-27 22:02:24,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 3811 events. 2533/3811 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18259 event pairs, 1725 based on Foata normal form. 0/2996 useless extension candidates. Maximal degree in co-relation 7497. Up to 3793 conditions per place. [2024-06-27 22:02:24,128 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-06-27 22:02:24,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 378 flow [2024-06-27 22:02:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:02:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:02:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 22:02:24,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-27 22:02:24,139 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 204 flow. Second operand 3 states and 116 transitions. [2024-06-27 22:02:24,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 378 flow [2024-06-27 22:02:24,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 370 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:24,145 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 210 flow [2024-06-27 22:02:24,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-06-27 22:02:24,148 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-06-27 22:02:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 210 flow [2024-06-27 22:02:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 22:02:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:24,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-06-27 22:02:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:24,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -733273618, now seen corresponding path program 1 times [2024-06-27 22:02:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215563394] [2024-06-27 22:02:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:24,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:24,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:24,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-06-27 22:02:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:24,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 22:02:24,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 22:02:24,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 22:02:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 22:02:24,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215563394] [2024-06-27 22:02:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215563394] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 22:02:24,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 22:02:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-27 22:02:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374878499] [2024-06-27 22:02:24,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 22:02:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:24,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 22:02:24,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-06-27 22:02:24,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:24,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 22:02:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:26,108 INFO L124 PetriNetUnfolderBase]: 2533/3843 cut-off events. [2024-06-27 22:02:26,109 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-06-27 22:02:26,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 3843 events. 2533/3843 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18458 event pairs, 1725 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 7669. Up to 3793 conditions per place. [2024-06-27 22:02:26,122 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 79 selfloop transitions, 28 changer transitions 0/112 dead transitions. [2024-06-27 22:02:26,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 472 flow [2024-06-27 22:02:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:02:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:02:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 22:02:26,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28114478114478114 [2024-06-27 22:02:26,126 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 210 flow. Second operand 6 states and 167 transitions. [2024-06-27 22:02:26,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 472 flow [2024-06-27 22:02:26,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:26,128 INFO L231 Difference]: Finished difference. Result has 80 places, 112 transitions, 362 flow [2024-06-27 22:02:26,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=80, PETRI_TRANSITIONS=112} [2024-06-27 22:02:26,129 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-06-27 22:02:26,129 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 112 transitions, 362 flow [2024-06-27 22:02:26,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-06-27 22:02:26,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:26,130 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:26,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-06-27 22:02:26,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:26,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:26,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1244185385, now seen corresponding path program 1 times [2024-06-27 22:02:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968351522] [2024-06-27 22:02:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:26,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:26,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:26,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:26,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-06-27 22:02:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:26,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 22:02:26,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-06-27 22:02:26,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 22:02:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-06-27 22:02:26,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968351522] [2024-06-27 22:02:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968351522] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 22:02:26,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 22:02:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-06-27 22:02:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273846057] [2024-06-27 22:02:26,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 22:02:26,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:02:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:02:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:02:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 22:02:26,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 112 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-06-27 22:02:26,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:26,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 22:02:26,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:29,244 INFO L124 PetriNetUnfolderBase]: 2533/3859 cut-off events. [2024-06-27 22:02:29,245 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:02:29,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 3859 events. 2533/3859 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18405 event pairs, 1725 based on Foata normal form. 15/3059 useless extension candidates. Maximal degree in co-relation 7733. Up to 3793 conditions per place. [2024-06-27 22:02:29,264 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 79 selfloop transitions, 44 changer transitions 0/128 dead transitions. [2024-06-27 22:02:29,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 676 flow [2024-06-27 22:02:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:02:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:02:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 22:02:29,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18771043771043772 [2024-06-27 22:02:29,267 INFO L175 Difference]: Start difference. First operand has 80 places, 112 transitions, 362 flow. Second operand 12 states and 223 transitions. [2024-06-27 22:02:29,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 676 flow [2024-06-27 22:02:29,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 128 transitions, 646 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:29,271 INFO L231 Difference]: Finished difference. Result has 93 places, 128 transitions, 550 flow [2024-06-27 22:02:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=128} [2024-06-27 22:02:29,272 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-06-27 22:02:29,272 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 128 transitions, 550 flow [2024-06-27 22:02:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-06-27 22:02:29,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:29,273 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:29,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-06-27 22:02:29,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:29,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:29,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1123426113, now seen corresponding path program 2 times [2024-06-27 22:02:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:29,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839962937] [2024-06-27 22:02:29,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 22:02:29,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:29,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:29,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-06-27 22:02:29,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 22:02:29,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 22:02:29,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 22:02:29,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-27 22:02:30,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 22:02:30,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839962937] [2024-06-27 22:02:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839962937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:30,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:02:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900926779] [2024-06-27 22:02:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:02:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:02:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:02:30,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 22:02:30,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 128 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2024-06-27 22:02:30,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:30,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 22:02:30,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:31,969 INFO L124 PetriNetUnfolderBase]: 4000/6118 cut-off events. [2024-06-27 22:02:31,969 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 22:02:31,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12405 conditions, 6118 events. 4000/6118 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32005 event pairs, 1937 based on Foata normal form. 676/5580 useless extension candidates. Maximal degree in co-relation 12333. Up to 3628 conditions per place. [2024-06-27 22:02:31,991 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 189 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2024-06-27 22:02:31,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 195 transitions, 1071 flow [2024-06-27 22:02:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:02:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:02:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-27 22:02:31,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892255892255892 [2024-06-27 22:02:31,994 INFO L175 Difference]: Start difference. First operand has 93 places, 128 transitions, 550 flow. Second operand 3 states and 175 transitions. [2024-06-27 22:02:31,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 195 transitions, 1071 flow [2024-06-27 22:02:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 195 transitions, 1035 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:32,004 INFO L231 Difference]: Finished difference. Result has 94 places, 130 transitions, 539 flow [2024-06-27 22:02:32,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=130} [2024-06-27 22:02:32,006 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2024-06-27 22:02:32,006 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 130 transitions, 539 flow [2024-06-27 22:02:32,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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) [2024-06-27 22:02:32,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:32,009 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:32,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-06-27 22:02:32,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:32,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:32,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash 946822903, now seen corresponding path program 1 times [2024-06-27 22:02:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510898578] [2024-06-27 22:02:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:32,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:32,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:32,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:32,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-06-27 22:02:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:32,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 22:02:32,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 22:02:33,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 22:02:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-27 22:02:33,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510898578] [2024-06-27 22:02:33,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510898578] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 22:02:33,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 22:02:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-06-27 22:02:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623650615] [2024-06-27 22:02:33,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 22:02:33,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 22:02:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 22:02:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-06-27 22:02:33,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 22:02:33,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 130 transitions, 539 flow. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 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) [2024-06-27 22:02:33,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:33,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 22:02:33,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:36,112 INFO L124 PetriNetUnfolderBase]: 3618/5644 cut-off events. [2024-06-27 22:02:36,113 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-06-27 22:02:36,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12016 conditions, 5644 events. 3618/5644 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29967 event pairs, 2593 based on Foata normal form. 14/4444 useless extension candidates. Maximal degree in co-relation 11947. Up to 5515 conditions per place. [2024-06-27 22:02:36,136 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 81 selfloop transitions, 58 changer transitions 0/144 dead transitions. [2024-06-27 22:02:36,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 144 transitions, 901 flow [2024-06-27 22:02:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:02:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:02:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-27 22:02:36,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17965367965367965 [2024-06-27 22:02:36,139 INFO L175 Difference]: Start difference. First operand has 94 places, 130 transitions, 539 flow. Second operand 14 states and 249 transitions. [2024-06-27 22:02:36,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 144 transitions, 901 flow [2024-06-27 22:02:36,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 144 transitions, 898 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:36,142 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 834 flow [2024-06-27 22:02:36,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=834, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-27 22:02:36,143 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2024-06-27 22:02:36,143 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 834 flow [2024-06-27 22:02:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 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) [2024-06-27 22:02:36,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:36,144 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:36,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-06-27 22:02:36,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:36,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:36,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1561244060, now seen corresponding path program 2 times [2024-06-27 22:02:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211225115] [2024-06-27 22:02:36,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 22:02:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:36,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:36,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-06-27 22:02:36,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 22:02:36,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 22:02:36,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 22:02:36,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 22:02:37,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 22:02:37,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211225115] [2024-06-27 22:02:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211225115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:37,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:37,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:02:37,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771224980] [2024-06-27 22:02:37,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:02:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:02:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:02:37,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 22:02:37,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-27 22:02:37,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:37,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 22:02:37,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:39,336 INFO L124 PetriNetUnfolderBase]: 4719/7301 cut-off events. [2024-06-27 22:02:39,337 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-27 22:02:39,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15764 conditions, 7301 events. 4719/7301 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 39271 event pairs, 1970 based on Foata normal form. 182/6083 useless extension candidates. Maximal degree in co-relation 15666. Up to 3642 conditions per place. [2024-06-27 22:02:39,365 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 259 selfloop transitions, 6 changer transitions 0/268 dead transitions. [2024-06-27 22:02:39,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 268 transitions, 1634 flow [2024-06-27 22:02:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:02:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:02:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-27 22:02:39,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292929292929294 [2024-06-27 22:02:39,367 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 834 flow. Second operand 5 states and 244 transitions. [2024-06-27 22:02:39,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 268 transitions, 1634 flow [2024-06-27 22:02:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 268 transitions, 1606 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:39,374 INFO L231 Difference]: Finished difference. Result has 118 places, 147 transitions, 847 flow [2024-06-27 22:02:39,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=847, PETRI_PLACES=118, PETRI_TRANSITIONS=147} [2024-06-27 22:02:39,375 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 43 predicate places. [2024-06-27 22:02:39,375 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 147 transitions, 847 flow [2024-06-27 22:02:39,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-27 22:02:39,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:39,375 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:39,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-06-27 22:02:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:39,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:39,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -813339526, now seen corresponding path program 3 times [2024-06-27 22:02:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:39,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262746557] [2024-06-27 22:02:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 22:02:39,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:39,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:39,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:39,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-06-27 22:02:40,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 22:02:40,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 22:02:40,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 22:02:40,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 22:02:40,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 22:02:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-27 22:02:40,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262746557] [2024-06-27 22:02:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262746557] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 22:02:40,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 22:02:40,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-06-27 22:02:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913100194] [2024-06-27 22:02:40,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 22:02:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:40,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:40,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:40,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-27 22:02:40,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 147 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-06-27 22:02:40,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:40,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-27 22:02:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:43,494 INFO L124 PetriNetUnfolderBase]: 4611/7232 cut-off events. [2024-06-27 22:02:43,494 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-06-27 22:02:43,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 7232 events. 4611/7232 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 39039 event pairs, 1725 based on Foata normal form. 444/6266 useless extension candidates. Maximal degree in co-relation 15765. Up to 3642 conditions per place. [2024-06-27 22:02:43,522 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 293 selfloop transitions, 8 changer transitions 4/308 dead transitions. [2024-06-27 22:02:43,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 308 transitions, 1801 flow [2024-06-27 22:02:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 295 transitions. [2024-06-27 22:02:43,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42568542568542567 [2024-06-27 22:02:43,525 INFO L175 Difference]: Start difference. First operand has 118 places, 147 transitions, 847 flow. Second operand 7 states and 295 transitions. [2024-06-27 22:02:43,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 308 transitions, 1801 flow [2024-06-27 22:02:43,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 308 transitions, 1798 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:43,535 INFO L231 Difference]: Finished difference. Result has 122 places, 147 transitions, 866 flow [2024-06-27 22:02:43,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=866, PETRI_PLACES=122, PETRI_TRANSITIONS=147} [2024-06-27 22:02:43,536 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 47 predicate places. [2024-06-27 22:02:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 147 transitions, 866 flow [2024-06-27 22:02:43,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-06-27 22:02:43,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:43,536 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:43,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-06-27 22:02:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:43,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:43,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1869417880, now seen corresponding path program 1 times [2024-06-27 22:02:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905502316] [2024-06-27 22:02:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:43,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:43,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-06-27 22:02:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:44,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 17 conjunts are in the unsatisfiable core [2024-06-27 22:02:44,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 22:02:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 22:02:44,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 22:02:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-27 22:02:45,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 22:02:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905502316] [2024-06-27 22:02:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905502316] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 22:02:45,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 22:02:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-06-27 22:02:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486019689] [2024-06-27 22:02:45,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 22:02:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-06-27 22:02:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 22:02:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-06-27 22:02:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-06-27 22:02:45,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-27 22:02:45,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 147 transitions, 866 flow. Second operand has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 28 states have internal predecessors, (256), 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) [2024-06-27 22:02:45,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:45,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-27 22:02:45,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:49,147 INFO L124 PetriNetUnfolderBase]: 4611/7234 cut-off events. [2024-06-27 22:02:49,147 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-06-27 22:02:49,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 7234 events. 4611/7234 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 39758 event pairs, 3534 based on Foata normal form. 2/5826 useless extension candidates. Maximal degree in co-relation 16143. Up to 7163 conditions per place. [2024-06-27 22:02:49,177 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 86 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-27 22:02:49,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 149 transitions, 1174 flow [2024-06-27 22:02:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 22:02:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 22:02:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 281 transitions. [2024-06-27 22:02:49,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14191919191919192 [2024-06-27 22:02:49,180 INFO L175 Difference]: Start difference. First operand has 122 places, 147 transitions, 866 flow. Second operand 20 states and 281 transitions. [2024-06-27 22:02:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 149 transitions, 1174 flow [2024-06-27 22:02:49,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 149 transitions, 1162 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:49,187 INFO L231 Difference]: Finished difference. Result has 138 places, 149 transitions, 1000 flow [2024-06-27 22:02:49,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1000, PETRI_PLACES=138, PETRI_TRANSITIONS=149} [2024-06-27 22:02:49,189 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 63 predicate places. [2024-06-27 22:02:49,189 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 149 transitions, 1000 flow [2024-06-27 22:02:49,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 28 states have internal predecessors, (256), 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) [2024-06-27 22:02:49,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:49,190 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:49,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-06-27 22:02:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:49,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 22:02:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash 425399157, now seen corresponding path program 2 times [2024-06-27 22:02:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 22:02:49,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076892487] [2024-06-27 22:02:49,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 22:02:49,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 22:02:49,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 22:02:49,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 22:02:49,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process Killed by 15