./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3-extended.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/parallel-misc-3-extended.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3-extended.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-?-80b1b13-m [2024-01-31 17:00:38,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:00:38,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:00:38,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:00:38,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:00:38,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:00:38,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:00:38,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:00:38,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:00:38,319 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:00:38,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:00:38,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:00:38,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:00:38,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:00:38,322 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:00:38,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:00:38,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:00:38,323 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:00:38,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:00:38,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:00:38,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:00:38,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:00:38,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:00:38,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:00:38,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:00:38,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:00:38,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:00:38,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:00:38,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:00:38,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:00:38,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:00:38,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:00:38,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:38,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:00:38,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:00:38,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:00:38,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:00:38,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:00:38,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:00:38,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:00:38,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:00:38,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:00:38,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:00:38,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:00:38,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:00:38,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:00:38,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:00:38,616 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:00:38,616 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:00:38,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-3-extended.wvr.yml/witness.yml [2024-01-31 17:00:38,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:00:38,788 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:00:38,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-01-31 17:00:39,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:00:40,149 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:00:40,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-01-31 17:00:40,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239183713/eaf8da0b25e6439b995862cdb25abf14/FLAG762ba1e65 [2024-01-31 17:00:40,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239183713/eaf8da0b25e6439b995862cdb25abf14 [2024-01-31 17:00:40,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:00:40,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:00:40,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:40,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:00:40,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:00:40,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (1/2) ... [2024-01-31 17:00:40,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a73fb9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:40, skipping insertion in model container [2024-01-31 17:00:40,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (1/2) ... [2024-01-31 17:00:40,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7590cfaa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:40, skipping insertion in model container [2024-01-31 17:00:40,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:40" (2/2) ... [2024-01-31 17:00:40,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a73fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40, skipping insertion in model container [2024-01-31 17:00:40,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:40" (2/2) ... [2024-01-31 17:00:40,179 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:00:40,214 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:00:40,233 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:00:40,411 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2024-01-31 17:00:40,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:40,461 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:00:40,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2024-01-31 17:00:40,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:40,512 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:00:40,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40 WrapperNode [2024-01-31 17:00:40,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:40,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:40,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:00:40,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:00:40,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,546 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-01-31 17:00:40,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:40,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:00:40,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:00:40,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:00:40,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,592 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 17:00:40,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:00:40,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:00:40,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:00:40,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:00:40,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (1/1) ... [2024-01-31 17:00:40,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:40,669 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) [2024-01-31 17:00:40,671 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 [2024-01-31 17:00:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:00:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:00:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:00:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:00:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:00:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:00:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:00:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:00:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:00:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:00:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:00:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:00:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:00:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:00:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:00:40,704 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:00:40,793 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:00:40,795 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:00:40,999 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:00:40,999 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:00:41,152 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:00:41,152 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-31 17:00:41,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:41 BoogieIcfgContainer [2024-01-31 17:00:41,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:00:41,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:00:41,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:00:41,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:00:41,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (1/4) ... [2024-01-31 17:00:41,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2bd2cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:00:41, skipping insertion in model container [2024-01-31 17:00:41,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:00:40" (2/4) ... [2024-01-31 17:00:41,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2bd2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:00:41, skipping insertion in model container [2024-01-31 17:00:41,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:40" (3/4) ... [2024-01-31 17:00:41,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2bd2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:00:41, skipping insertion in model container [2024-01-31 17:00:41,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:41" (4/4) ... [2024-01-31 17:00:41,162 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-01-31 17:00:41,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:00:41,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:00:41,180 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:00:41,245 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:00:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2024-01-31 17:00:41,326 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-01-31 17:00:41,326 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:00:41,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-31 17:00:41,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2024-01-31 17:00:41,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2024-01-31 17:00:41,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:00:41,358 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;@67d49a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:00:41,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:00:41,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:00:41,373 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-01-31 17:00:41,373 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:00:41,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:41,374 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] [2024-01-31 17:00:41,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:41,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1587431230, now seen corresponding path program 1 times [2024-01-31 17:00:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138102887] [2024-01-31 17:00:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:41,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138102887] [2024-01-31 17:00:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138102887] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:41,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249596174] [2024-01-31 17:00:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:41,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:41,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-31 17:00:41,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 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) [2024-01-31 17:00:41,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:41,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-31 17:00:41,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:42,004 INFO L124 PetriNetUnfolderBase]: 950/1519 cut-off events. [2024-01-31 17:00:42,005 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-01-31 17:00:42,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 1519 events. 950/1519 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7408 event pairs, 93 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 2294. Up to 1118 conditions per place. [2024-01-31 17:00:42,023 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 36 selfloop transitions, 7 changer transitions 1/57 dead transitions. [2024-01-31 17:00:42,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 235 flow [2024-01-31 17:00:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-01-31 17:00:42,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-31 17:00:42,038 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 93 transitions. [2024-01-31 17:00:42,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 235 flow [2024-01-31 17:00:42,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 213 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:00:42,049 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2024-01-31 17:00:42,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2024-01-31 17:00:42,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-01-31 17:00:42,057 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2024-01-31 17:00:42,058 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) [2024-01-31 17:00:42,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:42,058 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, 1, 1, 1] [2024-01-31 17:00:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:00:42,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:42,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 762022240, now seen corresponding path program 1 times [2024-01-31 17:00:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:42,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098893084] [2024-01-31 17:00:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098893084] [2024-01-31 17:00:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098893084] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:42,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:42,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302857845] [2024-01-31 17:00:42,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:42,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-31 17:00:42,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-01-31 17:00:42,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:42,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-31 17:00:42,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:42,431 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,432 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,432 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-01-31 17:00:42,432 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,432 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,433 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 39#L72true, 7#L121-4true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,433 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,433 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,434 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-01-31 17:00:42,434 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,434 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,434 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,435 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,436 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-01-31 17:00:42,442 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-01-31 17:00:42,442 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [17#thread3EXITtrue, Black: 51#(= ~pos~0 0), 49#true, 39#L72true, 7#L121-4true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,442 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,443 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-01-31 17:00:42,443 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,443 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-01-31 17:00:42,448 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 32#$Ultimate##0true, 14#L122-1true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,448 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,448 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,448 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-01-31 17:00:42,448 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,449 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 32#$Ultimate##0true, 14#L122-1true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,449 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,449 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,449 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-01-31 17:00:42,449 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,479 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([339] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork1_#t~post2=|v_thread1Thread1of1ForFork1_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post2, ~pos~0][24], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,479 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2024-01-31 17:00:42,480 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,480 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,480 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,480 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([338] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][26], [26#L94true, Black: 51#(= ~pos~0 0), 49#true, 14#L122-1true, 39#L72true, 21#L50true, 55#(= ~g2~0 1)]) [2024-01-31 17:00:42,480 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2024-01-31 17:00:42,481 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,481 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-01-31 17:00:42,481 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-01-31 17:00:42,490 INFO L124 PetriNetUnfolderBase]: 753/1241 cut-off events. [2024-01-31 17:00:42,490 INFO L125 PetriNetUnfolderBase]: For 248/308 co-relation queries the response was YES. [2024-01-31 17:00:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1241 events. 753/1241 cut-off events. For 248/308 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6043 event pairs, 85 based on Foata normal form. 54/1105 useless extension candidates. Maximal degree in co-relation 1117. Up to 508 conditions per place. [2024-01-31 17:00:42,500 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 33 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-01-31 17:00:42,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 229 flow [2024-01-31 17:00:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-31 17:00:42,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-31 17:00:42,505 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 94 transitions. [2024-01-31 17:00:42,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 229 flow [2024-01-31 17:00:42,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:42,509 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2024-01-31 17:00:42,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2024-01-31 17:00:42,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-01-31 17:00:42,510 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2024-01-31 17:00:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-01-31 17:00:42,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:42,510 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, 1, 1, 1] [2024-01-31 17:00:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:00:42,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2133625150, now seen corresponding path program 1 times [2024-01-31 17:00:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935298801] [2024-01-31 17:00:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935298801] [2024-01-31 17:00:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935298801] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256083144] [2024-01-31 17:00:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:42,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:42,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-31 17:00:42,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-31 17:00:42,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:42,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-31 17:00:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:42,816 INFO L124 PetriNetUnfolderBase]: 833/1329 cut-off events. [2024-01-31 17:00:42,817 INFO L125 PetriNetUnfolderBase]: For 497/727 co-relation queries the response was YES. [2024-01-31 17:00:42,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1329 events. 833/1329 cut-off events. For 497/727 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6562 event pairs, 102 based on Foata normal form. 47/1150 useless extension candidates. Maximal degree in co-relation 1005. Up to 683 conditions per place. [2024-01-31 17:00:42,829 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 35 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-31 17:00:42,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 245 flow [2024-01-31 17:00:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-31 17:00:42,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-31 17:00:42,831 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 94 transitions. [2024-01-31 17:00:42,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 245 flow [2024-01-31 17:00:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:42,834 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2024-01-31 17:00:42,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2024-01-31 17:00:42,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-01-31 17:00:42,835 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2024-01-31 17:00:42,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-01-31 17:00:42,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:42,836 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:00:42,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:42,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 12153880, now seen corresponding path program 1 times [2024-01-31 17:00:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059340102] [2024-01-31 17:00:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:42,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059340102] [2024-01-31 17:00:42,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059340102] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280756250] [2024-01-31 17:00:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:42,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-01-31 17:00:42,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-01-31 17:00:42,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:42,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-01-31 17:00:42,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:43,112 INFO L124 PetriNetUnfolderBase]: 968/1562 cut-off events. [2024-01-31 17:00:43,112 INFO L125 PetriNetUnfolderBase]: For 653/777 co-relation queries the response was YES. [2024-01-31 17:00:43,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1562 events. 968/1562 cut-off events. For 653/777 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7652 event pairs, 193 based on Foata normal form. 52/1315 useless extension candidates. Maximal degree in co-relation 1185. Up to 578 conditions per place. [2024-01-31 17:00:43,125 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 37 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-01-31 17:00:43,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 267 flow [2024-01-31 17:00:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-01-31 17:00:43,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-01-31 17:00:43,129 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 94 transitions. [2024-01-31 17:00:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 267 flow [2024-01-31 17:00:43,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:43,135 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2024-01-31 17:00:43,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-01-31 17:00:43,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-01-31 17:00:43,137 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2024-01-31 17:00:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-01-31 17:00:43,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:43,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:43,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:00:43,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:43,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash -501636098, now seen corresponding path program 1 times [2024-01-31 17:00:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265589344] [2024-01-31 17:00:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:00:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265589344] [2024-01-31 17:00:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265589344] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:43,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543931337] [2024-01-31 17:00:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:43,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:43,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:43,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-01-31 17:00:43,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-31 17:00:43,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:43,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-01-31 17:00:43,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:43,778 INFO L124 PetriNetUnfolderBase]: 2277/3456 cut-off events. [2024-01-31 17:00:43,778 INFO L125 PetriNetUnfolderBase]: For 1799/1859 co-relation queries the response was YES. [2024-01-31 17:00:43,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 3456 events. 2277/3456 cut-off events. For 1799/1859 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18471 event pairs, 425 based on Foata normal form. 70/3043 useless extension candidates. Maximal degree in co-relation 3624. Up to 1157 conditions per place. [2024-01-31 17:00:43,803 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-01-31 17:00:43,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 370 flow [2024-01-31 17:00:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:00:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:00:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-01-31 17:00:43,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-31 17:00:43,805 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 4 states and 124 transitions. [2024-01-31 17:00:43,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 370 flow [2024-01-31 17:00:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:43,807 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 182 flow [2024-01-31 17:00:43,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-01-31 17:00:43,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-01-31 17:00:43,808 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 182 flow [2024-01-31 17:00:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-31 17:00:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-31 17:00:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:00:43,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2060429714, now seen corresponding path program 1 times [2024-01-31 17:00:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281741427] [2024-01-31 17:00:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:00:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281741427] [2024-01-31 17:00:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281741427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:44,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:44,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825618208] [2024-01-31 17:00:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:44,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:44,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:44,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-01-31 17:00:44,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-31 17:00:44,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:44,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-01-31 17:00:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:44,687 INFO L124 PetriNetUnfolderBase]: 3653/5348 cut-off events. [2024-01-31 17:00:44,687 INFO L125 PetriNetUnfolderBase]: For 7648/8274 co-relation queries the response was YES. [2024-01-31 17:00:44,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 5348 events. 3653/5348 cut-off events. For 7648/8274 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29451 event pairs, 845 based on Foata normal form. 210/4491 useless extension candidates. Maximal degree in co-relation 5610. Up to 1761 conditions per place. [2024-01-31 17:00:44,733 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 60 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-01-31 17:00:44,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 83 transitions, 456 flow [2024-01-31 17:00:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:00:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:00:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-01-31 17:00:44,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-01-31 17:00:44,735 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 182 flow. Second operand 4 states and 124 transitions. [2024-01-31 17:00:44,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 83 transitions, 456 flow [2024-01-31 17:00:44,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 450 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:44,744 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2024-01-31 17:00:44,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-01-31 17:00:44,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-01-31 17:00:44,747 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2024-01-31 17:00:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-31 17:00:44,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:44,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-01-31 17:00:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:00:44,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:44,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1250765526, now seen corresponding path program 1 times [2024-01-31 17:00:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690441868] [2024-01-31 17:00:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:00:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:44,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690441868] [2024-01-31 17:00:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690441868] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184131453] [2024-01-31 17:00:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:44,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:45,001 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) [2024-01-31 17:00:45,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:00:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:45,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjunts are in the unsatisfiable core [2024-01-31 17:00:45,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:00:45,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:00:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184131453] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:45,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 7] total 12 [2024-01-31 17:00:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847590291] [2024-01-31 17:00:45,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:45,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:00:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:00:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:00:45,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-01-31 17:00:45,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 18.692307692307693) internal successors, (243), 13 states have internal predecessors, (243), 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) [2024-01-31 17:00:45,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:45,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-01-31 17:00:45,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:47,780 INFO L124 PetriNetUnfolderBase]: 12425/17618 cut-off events. [2024-01-31 17:00:47,780 INFO L125 PetriNetUnfolderBase]: For 27316/29453 co-relation queries the response was YES. [2024-01-31 17:00:47,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54269 conditions, 17618 events. 12425/17618 cut-off events. For 27316/29453 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 102866 event pairs, 1345 based on Foata normal form. 1513/17386 useless extension candidates. Maximal degree in co-relation 16100. Up to 4147 conditions per place. [2024-01-31 17:00:47,918 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 246 selfloop transitions, 77 changer transitions 0/337 dead transitions. [2024-01-31 17:00:47,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 337 transitions, 2167 flow [2024-01-31 17:00:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-31 17:00:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-31 17:00:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 567 transitions. [2024-01-31 17:00:47,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-01-31 17:00:47,922 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 22 states and 567 transitions. [2024-01-31 17:00:47,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 337 transitions, 2167 flow [2024-01-31 17:00:47,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 337 transitions, 2155 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:47,935 INFO L231 Difference]: Finished difference. Result has 93 places, 123 transitions, 893 flow [2024-01-31 17:00:47,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=123} [2024-01-31 17:00:47,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-01-31 17:00:47,936 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 123 transitions, 893 flow [2024-01-31 17:00:47,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.692307692307693) internal successors, (243), 13 states have internal predecessors, (243), 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) [2024-01-31 17:00:47,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:47,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-01-31 17:00:47,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:48,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:00:48,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 258513928, now seen corresponding path program 1 times [2024-01-31 17:00:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588509431] [2024-01-31 17:00:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:48,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:48,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588509431] [2024-01-31 17:00:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588509431] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:48,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005773320] [2024-01-31 17:00:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:48,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:48,353 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) [2024-01-31 17:00:48,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:00:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:48,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 17:00:48,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:48,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005773320] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:48,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:48,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-01-31 17:00:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900256264] [2024-01-31 17:00:48,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:00:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:00:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:00:48,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-31 17:00:48,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 123 transitions, 893 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-01-31 17:00:48,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:48,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-31 17:00:48,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:58,054 INFO L124 PetriNetUnfolderBase]: 47017/76247 cut-off events. [2024-01-31 17:00:58,054 INFO L125 PetriNetUnfolderBase]: For 310288/316641 co-relation queries the response was YES. [2024-01-31 17:00:58,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296939 conditions, 76247 events. 47017/76247 cut-off events. For 310288/316641 co-relation queries the response was YES. Maximal size of possible extension queue 2216. Compared 643071 event pairs, 5116 based on Foata normal form. 1803/76669 useless extension candidates. Maximal degree in co-relation 227886. Up to 23200 conditions per place. [2024-01-31 17:00:58,800 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 395 selfloop transitions, 34 changer transitions 1/475 dead transitions. [2024-01-31 17:00:58,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 475 transitions, 4541 flow [2024-01-31 17:00:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:00:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:00:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-01-31 17:00:58,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2024-01-31 17:00:58,802 INFO L175 Difference]: Start difference. First operand has 93 places, 123 transitions, 893 flow. Second operand 7 states and 250 transitions. [2024-01-31 17:00:58,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 475 transitions, 4541 flow [2024-01-31 17:01:00,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 475 transitions, 4249 flow, removed 146 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:00,015 INFO L231 Difference]: Finished difference. Result has 100 places, 153 transitions, 1056 flow [2024-01-31 17:01:00,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1056, PETRI_PLACES=100, PETRI_TRANSITIONS=153} [2024-01-31 17:01:00,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-01-31 17:01:00,016 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 153 transitions, 1056 flow [2024-01-31 17:01:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-01-31 17:01:00,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:00,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-01-31 17:01:00,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:00,233 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,SelfDestructingSolverStorable7 [2024-01-31 17:01:00,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:01:00,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 719136426, now seen corresponding path program 2 times [2024-01-31 17:01:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738189658] [2024-01-31 17:01:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738189658] [2024-01-31 17:01:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738189658] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179247762] [2024-01-31 17:01:00,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:01:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:00,397 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) [2024-01-31 17:01:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:01:00,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:01:00,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:00,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 17:01:00,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:00,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:01:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179247762] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:00,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-01-31 17:01:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132701951] [2024-01-31 17:01:00,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:00,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-31 17:01:00,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 153 transitions, 1056 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-01-31 17:01:00,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:00,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-31 17:01:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:22,393 INFO L124 PetriNetUnfolderBase]: 106730/171073 cut-off events. [2024-01-31 17:01:22,394 INFO L125 PetriNetUnfolderBase]: For 726899/742042 co-relation queries the response was YES. [2024-01-31 17:01:23,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709708 conditions, 171073 events. 106730/171073 cut-off events. For 726899/742042 co-relation queries the response was YES. Maximal size of possible extension queue 5566. Compared 1585821 event pairs, 12621 based on Foata normal form. 4997/172411 useless extension candidates. Maximal degree in co-relation 531369. Up to 59174 conditions per place. [2024-01-31 17:01:24,723 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 422 selfloop transitions, 58 changer transitions 1/526 dead transitions. [2024-01-31 17:01:24,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 526 transitions, 4752 flow [2024-01-31 17:01:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-01-31 17:01:24,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2024-01-31 17:01:24,724 INFO L175 Difference]: Start difference. First operand has 100 places, 153 transitions, 1056 flow. Second operand 7 states and 252 transitions. [2024-01-31 17:01:24,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 526 transitions, 4752 flow [2024-01-31 17:01:28,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 526 transitions, 4596 flow, removed 78 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:28,892 INFO L231 Difference]: Finished difference. Result has 110 places, 207 transitions, 1497 flow [2024-01-31 17:01:28,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1497, PETRI_PLACES=110, PETRI_TRANSITIONS=207} [2024-01-31 17:01:28,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-01-31 17:01:28,893 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 207 transitions, 1497 flow [2024-01-31 17:01:28,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-01-31 17:01:28,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:28,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-01-31 17:01:28,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:29,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:29,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:01:29,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -759994406, now seen corresponding path program 3 times [2024-01-31 17:01:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727411264] [2024-01-31 17:01:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727411264] [2024-01-31 17:01:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727411264] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:29,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847090073] [2024-01-31 17:01:29,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:01:29,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:29,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:29,312 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) [2024-01-31 17:01:29,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:01:29,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-01-31 17:01:29,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:29,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 17:01:29,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:29,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:01:29,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847090073] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:29,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-01-31 17:01:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162826773] [2024-01-31 17:01:29,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:01:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:01:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:01:29,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-01-31 17:01:29,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 207 transitions, 1497 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2024-01-31 17:01:29,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:29,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-01-31 17:01:29,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand