./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.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/test-easy11.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/test-easy11.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy11.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 17:21:38,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:21:38,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:21:38,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:21:38,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:21:38,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:21:38,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:21:38,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:21:38,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:21:38,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:21:38,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:21:38,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:21:38,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:21:38,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:21:38,235 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:21:38,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:21:38,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:21:38,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:21:38,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:21:38,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:21:38,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:21:38,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:21:38,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:21:38,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:21:38,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:21:38,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:21:38,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:21:38,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:21:38,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:21:38,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:21:38,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:21:38,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:21:38,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:21:38,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:21:38,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:21:38,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:21:38,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:21:38,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:21:38,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:21:38,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:21:38,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:21:38,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:21:38,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:21:38,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:21:38,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:21:38,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:21:38,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:21:38,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:21:38,504 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:21:38,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-01-31 17:21:39,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:21:39,795 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:21:39,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-01-31 17:21:39,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d723cac20/772c31a73c20493bbbf483ed9a7d4d88/FLAG9af5661d9 [2024-01-31 17:21:39,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d723cac20/772c31a73c20493bbbf483ed9a7d4d88 [2024-01-31 17:21:39,823 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:21:39,823 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:21:39,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy11.wvr.yml/witness.yml [2024-01-31 17:21:39,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:21:39,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:21:39,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:21:39,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:21:39,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:21:39,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:21:39" (1/2) ... [2024-01-31 17:21:39,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62066f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:21:39, skipping insertion in model container [2024-01-31 17:21:39,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:21:39" (1/2) ... [2024-01-31 17:21:39,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fc8548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:21:39, skipping insertion in model container [2024-01-31 17:21:39,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:39" (2/2) ... [2024-01-31 17:21:39,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62066f6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:39, skipping insertion in model container [2024-01-31 17:21:39,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:39" (2/2) ... [2024-01-31 17:21:39,918 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:21:39,952 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:21:39,971 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:21:40,130 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/test-easy11.wvr.c[2031,2044] [2024-01-31 17:21:40,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:21:40,142 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:21:40,158 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/test-easy11.wvr.c[2031,2044] [2024-01-31 17:21:40,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:21:40,171 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:21:40,171 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40 WrapperNode [2024-01-31 17:21:40,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:21:40,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:21:40,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:21:40,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:21:40,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,216 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-01-31 17:21:40,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:21:40,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:21:40,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:21:40,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:21:40,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,240 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 17:21:40,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:21:40,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:21:40,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:21:40,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:21:40,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (1/1) ... [2024-01-31 17:21:40,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:21:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:40,276 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 17:21:40,277 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 17:21:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:21:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:21:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:21:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:21:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:21:40,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:21:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:21:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:21:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:21:40,310 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 17:21:40,391 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:21:40,392 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:21:40,520 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:21:40,520 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:21:40,637 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:21:40,637 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 17:21:40,638 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:21:40 BoogieIcfgContainer [2024-01-31 17:21:40,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:21:40,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:21:40,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:21:40,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:21:40,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:21:39" (1/4) ... [2024-01-31 17:21:40,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa4423e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:21:40, skipping insertion in model container [2024-01-31 17:21:40,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:39" (2/4) ... [2024-01-31 17:21:40,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa4423e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:21:40, skipping insertion in model container [2024-01-31 17:21:40,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:40" (3/4) ... [2024-01-31 17:21:40,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa4423e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:21:40, skipping insertion in model container [2024-01-31 17:21:40,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:21:40" (4/4) ... [2024-01-31 17:21:40,653 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-01-31 17:21:40,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:21:40,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:21:40,669 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:21:40,702 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:21:40,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-01-31 17:21:40,781 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-01-31 17:21:40,788 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:21:40,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-01-31 17:21:40,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-01-31 17:21:40,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-01-31 17:21:40,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:21:40,820 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;@c7e513a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:21:40,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:21:40,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:21:40,829 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-01-31 17:21:40,829 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:21:40,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:40,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:40,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1169459314, now seen corresponding path program 1 times [2024-01-31 17:21:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:40,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674284400] [2024-01-31 17:21:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:41,523 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 17:21:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674284400] [2024-01-31 17:21:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674284400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910476713] [2024-01-31 17:21:41,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:41,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:41,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:41,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:41,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:41,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:41,886 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-01-31 17:21:41,887 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 17:21:41,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 209 events. 114/209 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 580 event pairs, 22 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 364. Up to 81 conditions per place. [2024-01-31 17:21:41,893 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 35 selfloop transitions, 10 changer transitions 10/56 dead transitions. [2024-01-31 17:21:41,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 56 transitions, 243 flow [2024-01-31 17:21:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-01-31 17:21:41,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-01-31 17:21:41,908 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 9 states and 83 transitions. [2024-01-31 17:21:41,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 56 transitions, 243 flow [2024-01-31 17:21:41,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:21:41,914 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 109 flow [2024-01-31 17:21:41,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-01-31 17:21:41,919 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2024-01-31 17:21:41,919 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 109 flow [2024-01-31 17:21:41,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:41,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:41,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:41,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:21:41,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:41,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -711563540, now seen corresponding path program 2 times [2024-01-31 17:21:41,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:41,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245554755] [2024-01-31 17:21:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:41,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:42,121 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 17:21:42,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245554755] [2024-01-31 17:21:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245554755] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635638679] [2024-01-31 17:21:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:42,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 109 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:42,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:42,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:42,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:42,382 INFO L124 PetriNetUnfolderBase]: 124/227 cut-off events. [2024-01-31 17:21:42,383 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-01-31 17:21:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 227 events. 124/227 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 715 event pairs, 6 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 595. Up to 69 conditions per place. [2024-01-31 17:21:42,389 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 44 selfloop transitions, 12 changer transitions 12/69 dead transitions. [2024-01-31 17:21:42,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 367 flow [2024-01-31 17:21:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-01-31 17:21:42,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-01-31 17:21:42,392 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 109 flow. Second operand 9 states and 93 transitions. [2024-01-31 17:21:42,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 367 flow [2024-01-31 17:21:42,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 358 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 17:21:42,398 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 155 flow [2024-01-31 17:21:42,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=155, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-01-31 17:21:42,400 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2024-01-31 17:21:42,402 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 155 flow [2024-01-31 17:21:42,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:42,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:42,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:42,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:21:42,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 704347494, now seen corresponding path program 3 times [2024-01-31 17:21:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:42,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909224589] [2024-01-31 17:21:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:42,613 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 17:21:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909224589] [2024-01-31 17:21:42,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909224589] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:42,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:42,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253940784] [2024-01-31 17:21:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:42,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:42,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 155 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:42,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:42,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:42,824 INFO L124 PetriNetUnfolderBase]: 126/233 cut-off events. [2024-01-31 17:21:42,825 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-01-31 17:21:42,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 233 events. 126/233 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 705 event pairs, 18 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 704. Up to 135 conditions per place. [2024-01-31 17:21:42,827 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 36 selfloop transitions, 14 changer transitions 12/63 dead transitions. [2024-01-31 17:21:42,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 401 flow [2024-01-31 17:21:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-01-31 17:21:42,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41545893719806765 [2024-01-31 17:21:42,829 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 155 flow. Second operand 9 states and 86 transitions. [2024-01-31 17:21:42,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 401 flow [2024-01-31 17:21:42,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 358 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 17:21:42,832 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 202 flow [2024-01-31 17:21:42,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-01-31 17:21:42,833 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 22 predicate places. [2024-01-31 17:21:42,833 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 202 flow [2024-01-31 17:21:42,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:42,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:42,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:42,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:21:42,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:42,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1681790924, now seen corresponding path program 4 times [2024-01-31 17:21:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715700693] [2024-01-31 17:21:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:42,969 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 17:21:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715700693] [2024-01-31 17:21:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715700693] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:42,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867789031] [2024-01-31 17:21:42,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:42,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:42,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:42,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 202 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:42,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:42,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:42,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:43,205 INFO L124 PetriNetUnfolderBase]: 130/239 cut-off events. [2024-01-31 17:21:43,205 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-01-31 17:21:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 239 events. 130/239 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 761 event pairs, 16 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 739. Up to 139 conditions per place. [2024-01-31 17:21:43,208 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 41 selfloop transitions, 18 changer transitions 10/70 dead transitions. [2024-01-31 17:21:43,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 470 flow [2024-01-31 17:21:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-01-31 17:21:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-01-31 17:21:43,210 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 202 flow. Second operand 9 states and 88 transitions. [2024-01-31 17:21:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 470 flow [2024-01-31 17:21:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 422 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:43,214 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 256 flow [2024-01-31 17:21:43,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-01-31 17:21:43,215 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2024-01-31 17:21:43,215 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 256 flow [2024-01-31 17:21:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:43,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:43,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:21:43,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash 422497526, now seen corresponding path program 5 times [2024-01-31 17:21:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982908088] [2024-01-31 17:21:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:43,345 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 17:21:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982908088] [2024-01-31 17:21:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982908088] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511051164] [2024-01-31 17:21:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:43,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:43,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:43,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:43,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:43,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:43,562 INFO L124 PetriNetUnfolderBase]: 153/274 cut-off events. [2024-01-31 17:21:43,562 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-01-31 17:21:43,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 274 events. 153/274 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 861 event pairs, 22 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 943. Up to 149 conditions per place. [2024-01-31 17:21:43,564 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 38 selfloop transitions, 26 changer transitions 12/77 dead transitions. [2024-01-31 17:21:43,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 592 flow [2024-01-31 17:21:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-01-31 17:21:43,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42995169082125606 [2024-01-31 17:21:43,566 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 256 flow. Second operand 9 states and 89 transitions. [2024-01-31 17:21:43,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 592 flow [2024-01-31 17:21:43,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 534 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:43,569 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 394 flow [2024-01-31 17:21:43,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=394, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-01-31 17:21:43,570 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2024-01-31 17:21:43,570 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 394 flow [2024-01-31 17:21:43,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:43,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:43,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:21:43,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:43,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2092130500, now seen corresponding path program 6 times [2024-01-31 17:21:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:43,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639224082] [2024-01-31 17:21:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:43,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:43,689 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 17:21:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639224082] [2024-01-31 17:21:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639224082] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:43,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228276060] [2024-01-31 17:21:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:43,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:43,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:43,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:43,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 394 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:43,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:43,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:43,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:43,891 INFO L124 PetriNetUnfolderBase]: 151/272 cut-off events. [2024-01-31 17:21:43,891 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-01-31 17:21:43,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 272 events. 151/272 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 888 event pairs, 14 based on Foata normal form. 1/273 useless extension candidates. Maximal degree in co-relation 1041. Up to 147 conditions per place. [2024-01-31 17:21:43,894 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 46 selfloop transitions, 23 changer transitions 14/84 dead transitions. [2024-01-31 17:21:43,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 699 flow [2024-01-31 17:21:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-01-31 17:21:43,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42995169082125606 [2024-01-31 17:21:43,895 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 394 flow. Second operand 9 states and 89 transitions. [2024-01-31 17:21:43,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 699 flow [2024-01-31 17:21:43,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 652 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-31 17:21:43,899 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 389 flow [2024-01-31 17:21:43,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=389, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-01-31 17:21:43,900 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 35 predicate places. [2024-01-31 17:21:43,900 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 389 flow [2024-01-31 17:21:43,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:43,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:43,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:21:43,901 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:43,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 929200618, now seen corresponding path program 7 times [2024-01-31 17:21:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592224640] [2024-01-31 17:21:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:43,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:44,017 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 17:21:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592224640] [2024-01-31 17:21:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592224640] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160047425] [2024-01-31 17:21:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:44,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:44,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:44,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:44,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:44,232 INFO L124 PetriNetUnfolderBase]: 169/296 cut-off events. [2024-01-31 17:21:44,232 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-01-31 17:21:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 296 events. 169/296 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 947 event pairs, 22 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 1201. Up to 157 conditions per place. [2024-01-31 17:21:44,235 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 44 selfloop transitions, 31 changer transitions 10/86 dead transitions. [2024-01-31 17:21:44,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 777 flow [2024-01-31 17:21:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-01-31 17:21:44,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-01-31 17:21:44,237 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 389 flow. Second operand 9 states and 88 transitions. [2024-01-31 17:21:44,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 777 flow [2024-01-31 17:21:44,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 711 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:44,241 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 556 flow [2024-01-31 17:21:44,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-01-31 17:21:44,242 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 37 predicate places. [2024-01-31 17:21:44,242 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 556 flow [2024-01-31 17:21:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:44,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:44,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:21:44,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:44,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash 376109162, now seen corresponding path program 8 times [2024-01-31 17:21:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:44,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463034831] [2024-01-31 17:21:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:44,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:44,357 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 17:21:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463034831] [2024-01-31 17:21:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463034831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807061467] [2024-01-31 17:21:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:44,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:44,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:44,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:44,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:44,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:44,557 INFO L124 PetriNetUnfolderBase]: 181/316 cut-off events. [2024-01-31 17:21:44,557 INFO L125 PetriNetUnfolderBase]: For 1033/1033 co-relation queries the response was YES. [2024-01-31 17:21:44,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 316 events. 181/316 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1079 event pairs, 16 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1375. Up to 161 conditions per place. [2024-01-31 17:21:44,560 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 56 selfloop transitions, 30 changer transitions 12/99 dead transitions. [2024-01-31 17:21:44,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 936 flow [2024-01-31 17:21:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-01-31 17:21:44,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 17:21:44,562 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 556 flow. Second operand 9 states and 92 transitions. [2024-01-31 17:21:44,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 936 flow [2024-01-31 17:21:44,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 859 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-01-31 17:21:44,567 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 577 flow [2024-01-31 17:21:44,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=577, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-01-31 17:21:44,568 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 42 predicate places. [2024-01-31 17:21:44,568 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 577 flow [2024-01-31 17:21:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:44,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:21:44,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:44,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1947180834, now seen corresponding path program 9 times [2024-01-31 17:21:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363455566] [2024-01-31 17:21:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:44,675 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 17:21:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363455566] [2024-01-31 17:21:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363455566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:44,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573166665] [2024-01-31 17:21:44,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:44,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:44,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:44,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:44,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:44,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:44,895 INFO L124 PetriNetUnfolderBase]: 175/310 cut-off events. [2024-01-31 17:21:44,895 INFO L125 PetriNetUnfolderBase]: For 1091/1091 co-relation queries the response was YES. [2024-01-31 17:21:44,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 310 events. 175/310 cut-off events. For 1091/1091 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1043 event pairs, 22 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 1363. Up to 167 conditions per place. [2024-01-31 17:21:44,898 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 45 selfloop transitions, 32 changer transitions 12/90 dead transitions. [2024-01-31 17:21:44,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 881 flow [2024-01-31 17:21:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-01-31 17:21:44,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-01-31 17:21:44,900 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 577 flow. Second operand 9 states and 90 transitions. [2024-01-31 17:21:44,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 881 flow [2024-01-31 17:21:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 807 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:44,905 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 616 flow [2024-01-31 17:21:44,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-01-31 17:21:44,906 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 45 predicate places. [2024-01-31 17:21:44,906 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 616 flow [2024-01-31 17:21:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:44,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:44,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:21:44,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:44,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1859244100, now seen corresponding path program 10 times [2024-01-31 17:21:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551976770] [2024-01-31 17:21:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:45,032 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 17:21:45,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:45,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551976770] [2024-01-31 17:21:45,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551976770] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:45,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423847900] [2024-01-31 17:21:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:45,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:45,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:45,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:45,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:45,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:45,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:45,267 INFO L124 PetriNetUnfolderBase]: 191/338 cut-off events. [2024-01-31 17:21:45,267 INFO L125 PetriNetUnfolderBase]: For 1229/1229 co-relation queries the response was YES. [2024-01-31 17:21:45,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 338 events. 191/338 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1187 event pairs, 16 based on Foata normal form. 1/339 useless extension candidates. Maximal degree in co-relation 1461. Up to 175 conditions per place. [2024-01-31 17:21:45,271 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 49 selfloop transitions, 33 changer transitions 12/95 dead transitions. [2024-01-31 17:21:45,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 926 flow [2024-01-31 17:21:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-01-31 17:21:45,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2024-01-31 17:21:45,272 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 616 flow. Second operand 9 states and 95 transitions. [2024-01-31 17:21:45,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 926 flow [2024-01-31 17:21:45,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 856 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-01-31 17:21:45,279 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 643 flow [2024-01-31 17:21:45,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=643, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-01-31 17:21:45,280 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 49 predicate places. [2024-01-31 17:21:45,280 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 643 flow [2024-01-31 17:21:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:45,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:21:45,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:45,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1372105332, now seen corresponding path program 11 times [2024-01-31 17:21:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349094390] [2024-01-31 17:21:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:45,414 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 17:21:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349094390] [2024-01-31 17:21:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349094390] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966885540] [2024-01-31 17:21:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:45,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:45,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:45,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:45,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:45,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:45,625 INFO L124 PetriNetUnfolderBase]: 195/348 cut-off events. [2024-01-31 17:21:45,625 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-01-31 17:21:45,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 348 events. 195/348 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1259 event pairs, 16 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1523. Up to 195 conditions per place. [2024-01-31 17:21:45,629 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 49 selfloop transitions, 33 changer transitions 10/93 dead transitions. [2024-01-31 17:21:45,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 941 flow [2024-01-31 17:21:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-01-31 17:21:45,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-01-31 17:21:45,630 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 643 flow. Second operand 9 states and 90 transitions. [2024-01-31 17:21:45,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 941 flow [2024-01-31 17:21:45,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 867 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:45,642 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 666 flow [2024-01-31 17:21:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=666, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-01-31 17:21:45,643 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 51 predicate places. [2024-01-31 17:21:45,643 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 666 flow [2024-01-31 17:21:45,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:45,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:45,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:21:45,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:45,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1760041140, now seen corresponding path program 12 times [2024-01-31 17:21:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425510251] [2024-01-31 17:21:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:45,779 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 17:21:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425510251] [2024-01-31 17:21:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425510251] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101122152] [2024-01-31 17:21:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:45,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:45,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 666 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:45,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:45,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:45,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:45,998 INFO L124 PetriNetUnfolderBase]: 187/336 cut-off events. [2024-01-31 17:21:45,999 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2024-01-31 17:21:46,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 336 events. 187/336 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1211 event pairs, 16 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1493. Up to 193 conditions per place. [2024-01-31 17:21:46,002 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 47 selfloop transitions, 30 changer transitions 14/92 dead transitions. [2024-01-31 17:21:46,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 92 transitions, 941 flow [2024-01-31 17:21:46,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-01-31 17:21:46,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-01-31 17:21:46,004 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 666 flow. Second operand 9 states and 88 transitions. [2024-01-31 17:21:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 92 transitions, 941 flow [2024-01-31 17:21:46,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 863 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:46,012 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 618 flow [2024-01-31 17:21:46,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-01-31 17:21:46,015 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 51 predicate places. [2024-01-31 17:21:46,015 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 618 flow [2024-01-31 17:21:46,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:46,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:46,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:21:46,017 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:46,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash 341455296, now seen corresponding path program 13 times [2024-01-31 17:21:46,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:46,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917120953] [2024-01-31 17:21:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:46,139 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 17:21:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917120953] [2024-01-31 17:21:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917120953] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544179459] [2024-01-31 17:21:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:46,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:46,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:46,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:46,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:46,342 INFO L124 PetriNetUnfolderBase]: 178/319 cut-off events. [2024-01-31 17:21:46,342 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-01-31 17:21:46,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 319 events. 178/319 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1115 event pairs, 16 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1395. Up to 183 conditions per place. [2024-01-31 17:21:46,346 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 46 selfloop transitions, 28 changer transitions 12/87 dead transitions. [2024-01-31 17:21:46,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 878 flow [2024-01-31 17:21:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-01-31 17:21:46,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-01-31 17:21:46,347 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 618 flow. Second operand 9 states and 87 transitions. [2024-01-31 17:21:46,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 878 flow [2024-01-31 17:21:46,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 812 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:46,353 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 578 flow [2024-01-31 17:21:46,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-01-31 17:21:46,354 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 50 predicate places. [2024-01-31 17:21:46,354 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 578 flow [2024-01-31 17:21:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:46,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:21:46,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:46,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 523073994, now seen corresponding path program 14 times [2024-01-31 17:21:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664698796] [2024-01-31 17:21:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:46,478 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 17:21:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:46,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664698796] [2024-01-31 17:21:46,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664698796] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:46,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:46,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785492837] [2024-01-31 17:21:46,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:46,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:46,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:46,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:46,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 578 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:46,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:46,702 INFO L124 PetriNetUnfolderBase]: 177/318 cut-off events. [2024-01-31 17:21:46,702 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-01-31 17:21:46,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 318 events. 177/318 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1082 event pairs, 22 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1349. Up to 181 conditions per place. [2024-01-31 17:21:46,705 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 45 selfloop transitions, 30 changer transitions 12/88 dead transitions. [2024-01-31 17:21:46,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 885 flow [2024-01-31 17:21:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-01-31 17:21:46,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-01-31 17:21:46,706 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 578 flow. Second operand 9 states and 88 transitions. [2024-01-31 17:21:46,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 885 flow [2024-01-31 17:21:46,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 88 transitions, 821 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:46,715 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 622 flow [2024-01-31 17:21:46,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-01-31 17:21:46,716 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 52 predicate places. [2024-01-31 17:21:46,716 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 622 flow [2024-01-31 17:21:46,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:46,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 17:21:46,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:46,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1183228012, now seen corresponding path program 15 times [2024-01-31 17:21:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128451013] [2024-01-31 17:21:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:46,838 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 17:21:46,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:46,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128451013] [2024-01-31 17:21:46,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128451013] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:46,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:46,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038265005] [2024-01-31 17:21:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:46,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:46,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:46,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:46,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:46,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:47,035 INFO L124 PetriNetUnfolderBase]: 173/312 cut-off events. [2024-01-31 17:21:47,036 INFO L125 PetriNetUnfolderBase]: For 1396/1396 co-relation queries the response was YES. [2024-01-31 17:21:47,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 312 events. 173/312 cut-off events. For 1396/1396 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1052 event pairs, 24 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1363. Up to 179 conditions per place. [2024-01-31 17:21:47,039 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 45 selfloop transitions, 27 changer transitions 12/85 dead transitions. [2024-01-31 17:21:47,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 888 flow [2024-01-31 17:21:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-01-31 17:21:47,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106280193236715 [2024-01-31 17:21:47,041 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 622 flow. Second operand 9 states and 85 transitions. [2024-01-31 17:21:47,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 888 flow [2024-01-31 17:21:47,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 833 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 17:21:47,048 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 600 flow [2024-01-31 17:21:47,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=600, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-01-31 17:21:47,049 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2024-01-31 17:21:47,049 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 600 flow [2024-01-31 17:21:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:47,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 17:21:47,050 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:47,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1407769992, now seen corresponding path program 16 times [2024-01-31 17:21:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554024232] [2024-01-31 17:21:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:47,180 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 17:21:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554024232] [2024-01-31 17:21:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554024232] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:47,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:47,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769502348] [2024-01-31 17:21:47,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:47,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:47,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:47,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:47,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 600 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:47,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:47,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:47,365 INFO L124 PetriNetUnfolderBase]: 182/327 cut-off events. [2024-01-31 17:21:47,366 INFO L125 PetriNetUnfolderBase]: For 1491/1491 co-relation queries the response was YES. [2024-01-31 17:21:47,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 327 events. 182/327 cut-off events. For 1491/1491 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1133 event pairs, 22 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1411. Up to 183 conditions per place. [2024-01-31 17:21:47,369 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 52 selfloop transitions, 26 changer transitions 10/89 dead transitions. [2024-01-31 17:21:47,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 941 flow [2024-01-31 17:21:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-01-31 17:21:47,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41545893719806765 [2024-01-31 17:21:47,370 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 600 flow. Second operand 9 states and 86 transitions. [2024-01-31 17:21:47,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 941 flow [2024-01-31 17:21:47,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 879 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:47,376 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 627 flow [2024-01-31 17:21:47,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=627, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-01-31 17:21:47,377 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2024-01-31 17:21:47,377 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 627 flow [2024-01-31 17:21:47,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:47,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:47,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 17:21:47,378 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:47,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1422169336, now seen corresponding path program 17 times [2024-01-31 17:21:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:47,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101486397] [2024-01-31 17:21:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:47,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:47,482 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 17:21:47,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:47,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101486397] [2024-01-31 17:21:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101486397] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:47,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:47,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:47,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248027933] [2024-01-31 17:21:47,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:47,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:47,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:47,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:47,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 627 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:47,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:47,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:47,687 INFO L124 PetriNetUnfolderBase]: 174/315 cut-off events. [2024-01-31 17:21:47,687 INFO L125 PetriNetUnfolderBase]: For 1565/1565 co-relation queries the response was YES. [2024-01-31 17:21:47,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 315 events. 174/315 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1078 event pairs, 24 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1401. Up to 185 conditions per place. [2024-01-31 17:21:47,690 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 50 selfloop transitions, 23 changer transitions 12/86 dead transitions. [2024-01-31 17:21:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 932 flow [2024-01-31 17:21:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-01-31 17:21:47,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-01-31 17:21:47,691 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 627 flow. Second operand 9 states and 83 transitions. [2024-01-31 17:21:47,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 932 flow [2024-01-31 17:21:47,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 866 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:47,698 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 577 flow [2024-01-31 17:21:47,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=577, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-01-31 17:21:47,698 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2024-01-31 17:21:47,698 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 577 flow [2024-01-31 17:21:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:47,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 17:21:47,699 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:47,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 810433334, now seen corresponding path program 18 times [2024-01-31 17:21:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:47,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860750632] [2024-01-31 17:21:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:47,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:47,798 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 17:21:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860750632] [2024-01-31 17:21:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860750632] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:47,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:47,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:47,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729429575] [2024-01-31 17:21:47,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:47,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:47,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:47,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:47,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:47,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:47,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:47,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:47,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:47,985 INFO L124 PetriNetUnfolderBase]: 183/330 cut-off events. [2024-01-31 17:21:47,985 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-01-31 17:21:47,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 330 events. 183/330 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1152 event pairs, 24 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1421. Up to 189 conditions per place. [2024-01-31 17:21:47,988 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 47 selfloop transitions, 28 changer transitions 10/86 dead transitions. [2024-01-31 17:21:47,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 886 flow [2024-01-31 17:21:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-01-31 17:21:47,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-01-31 17:21:47,989 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 577 flow. Second operand 9 states and 87 transitions. [2024-01-31 17:21:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 886 flow [2024-01-31 17:21:47,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 828 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:47,995 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 614 flow [2024-01-31 17:21:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=614, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-01-31 17:21:47,996 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 56 predicate places. [2024-01-31 17:21:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 614 flow [2024-01-31 17:21:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:47,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 17:21:47,997 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:47,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -253184530, now seen corresponding path program 19 times [2024-01-31 17:21:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839333860] [2024-01-31 17:21:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:48,091 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 17:21:48,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839333860] [2024-01-31 17:21:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839333860] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645262766] [2024-01-31 17:21:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:48,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:48,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:48,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:48,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:48,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:48,298 INFO L124 PetriNetUnfolderBase]: 193/348 cut-off events. [2024-01-31 17:21:48,298 INFO L125 PetriNetUnfolderBase]: For 1885/1885 co-relation queries the response was YES. [2024-01-31 17:21:48,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 348 events. 193/348 cut-off events. For 1885/1885 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1244 event pairs, 26 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1519. Up to 205 conditions per place. [2024-01-31 17:21:48,301 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 52 selfloop transitions, 26 changer transitions 12/91 dead transitions. [2024-01-31 17:21:48,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 934 flow [2024-01-31 17:21:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-01-31 17:21:48,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396135265700483 [2024-01-31 17:21:48,303 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 614 flow. Second operand 9 states and 91 transitions. [2024-01-31 17:21:48,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 934 flow [2024-01-31 17:21:48,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 91 transitions, 862 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:48,310 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 616 flow [2024-01-31 17:21:48,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-01-31 17:21:48,310 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-01-31 17:21:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 616 flow [2024-01-31 17:21:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:48,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:48,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 17:21:48,311 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:48,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1770973334, now seen corresponding path program 20 times [2024-01-31 17:21:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452850656] [2024-01-31 17:21:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:48,418 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 17:21:48,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452850656] [2024-01-31 17:21:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452850656] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:21:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129649474] [2024-01-31 17:21:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:21:48,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:48,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:48,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:48,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:48,617 INFO L124 PetriNetUnfolderBase]: 181/330 cut-off events. [2024-01-31 17:21:48,617 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-01-31 17:21:48,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 330 events. 181/330 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1158 event pairs, 28 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1453. Up to 203 conditions per place. [2024-01-31 17:21:48,620 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 47 selfloop transitions, 24 changer transitions 12/84 dead transitions. [2024-01-31 17:21:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 887 flow [2024-01-31 17:21:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-01-31 17:21:48,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-01-31 17:21:48,622 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 616 flow. Second operand 9 states and 84 transitions. [2024-01-31 17:21:48,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 887 flow [2024-01-31 17:21:48,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 821 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-31 17:21:48,629 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 568 flow [2024-01-31 17:21:48,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=568, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2024-01-31 17:21:48,630 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-01-31 17:21:48,630 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 568 flow [2024-01-31 17:21:48,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 17:21:48,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:48,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 17:21:48,631 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:48,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 335244326, now seen corresponding path program 1 times [2024-01-31 17:21:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216694479] [2024-01-31 17:21:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:48,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216694479] [2024-01-31 17:21:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216694479] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827104563] [2024-01-31 17:21:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:48,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:48,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:48,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:48,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:48,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:48,783 INFO L124 PetriNetUnfolderBase]: 225/441 cut-off events. [2024-01-31 17:21:48,783 INFO L125 PetriNetUnfolderBase]: For 2739/2741 co-relation queries the response was YES. [2024-01-31 17:21:48,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 441 events. 225/441 cut-off events. For 2739/2741 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1929 event pairs, 28 based on Foata normal form. 16/455 useless extension candidates. Maximal degree in co-relation 1972. Up to 122 conditions per place. [2024-01-31 17:21:48,787 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 60 selfloop transitions, 28 changer transitions 4/107 dead transitions. [2024-01-31 17:21:48,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 1089 flow [2024-01-31 17:21:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:21:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:21:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-01-31 17:21:48,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-01-31 17:21:48,788 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 568 flow. Second operand 7 states and 88 transitions. [2024-01-31 17:21:48,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 1089 flow [2024-01-31 17:21:48,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 1029 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:48,796 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 795 flow [2024-01-31 17:21:48,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=795, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-01-31 17:21:48,796 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-01-31 17:21:48,797 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 795 flow [2024-01-31 17:21:48,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:48,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:48,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:48,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 17:21:48,797 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:48,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -75638356, now seen corresponding path program 2 times [2024-01-31 17:21:48,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:48,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116452784] [2024-01-31 17:21:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116452784] [2024-01-31 17:21:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116452784] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113901415] [2024-01-31 17:21:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:48,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:48,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 795 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:48,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:48,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:48,960 INFO L124 PetriNetUnfolderBase]: 253/497 cut-off events. [2024-01-31 17:21:48,960 INFO L125 PetriNetUnfolderBase]: For 4286/4288 co-relation queries the response was YES. [2024-01-31 17:21:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 497 events. 253/497 cut-off events. For 4286/4288 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2228 event pairs, 49 based on Foata normal form. 10/502 useless extension candidates. Maximal degree in co-relation 2290. Up to 220 conditions per place. [2024-01-31 17:21:48,965 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 71 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-01-31 17:21:48,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 107 transitions, 1176 flow [2024-01-31 17:21:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:21:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:21:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-01-31 17:21:48,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-01-31 17:21:48,967 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 795 flow. Second operand 5 states and 76 transitions. [2024-01-31 17:21:48,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 107 transitions, 1176 flow [2024-01-31 17:21:48,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 1079 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-01-31 17:21:48,978 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 860 flow [2024-01-31 17:21:48,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-01-31 17:21:48,979 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 62 predicate places. [2024-01-31 17:21:48,979 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 860 flow [2024-01-31 17:21:48,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:48,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:48,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 17:21:48,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -514003769, now seen corresponding path program 1 times [2024-01-31 17:21:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009913837] [2024-01-31 17:21:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:49,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009913837] [2024-01-31 17:21:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009913837] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437312985] [2024-01-31 17:21:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:49,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:49,024 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 17:21:49,056 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 17:21:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:49,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 17:21:49,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:49,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:49,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437312985] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:49,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:21:49,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-01-31 17:21:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99770243] [2024-01-31 17:21:49,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:49,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:21:49,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:49,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:49,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:49,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:49,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:49,368 INFO L124 PetriNetUnfolderBase]: 343/709 cut-off events. [2024-01-31 17:21:49,368 INFO L125 PetriNetUnfolderBase]: For 4884/4892 co-relation queries the response was YES. [2024-01-31 17:21:49,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3297 conditions, 709 events. 343/709 cut-off events. For 4884/4892 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3736 event pairs, 23 based on Foata normal form. 18/722 useless extension candidates. Maximal degree in co-relation 2814. Up to 325 conditions per place. [2024-01-31 17:21:49,377 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 65 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-01-31 17:21:49,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 1295 flow [2024-01-31 17:21:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:21:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:21:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-01-31 17:21:49,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2024-01-31 17:21:49,379 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 860 flow. Second operand 5 states and 74 transitions. [2024-01-31 17:21:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 1295 flow [2024-01-31 17:21:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 1220 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-01-31 17:21:49,394 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 1038 flow [2024-01-31 17:21:49,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1038, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2024-01-31 17:21:49,395 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2024-01-31 17:21:49,395 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 1038 flow [2024-01-31 17:21:49,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:49,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:49,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:49,414 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 17:21:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-01-31 17:21:49,611 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:49,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 649451668, now seen corresponding path program 3 times [2024-01-31 17:21:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513993066] [2024-01-31 17:21:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513993066] [2024-01-31 17:21:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513993066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564528995] [2024-01-31 17:21:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:49,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:49,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 1038 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:49,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:49,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:49,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:49,846 INFO L124 PetriNetUnfolderBase]: 332/701 cut-off events. [2024-01-31 17:21:49,846 INFO L125 PetriNetUnfolderBase]: For 5056/5064 co-relation queries the response was YES. [2024-01-31 17:21:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 701 events. 332/701 cut-off events. For 5056/5064 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3689 event pairs, 50 based on Foata normal form. 16/717 useless extension candidates. Maximal degree in co-relation 3175. Up to 170 conditions per place. [2024-01-31 17:21:49,853 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 77 selfloop transitions, 30 changer transitions 5/127 dead transitions. [2024-01-31 17:21:49,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 1480 flow [2024-01-31 17:21:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:21:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:21:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-01-31 17:21:49,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706521739130435 [2024-01-31 17:21:49,855 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 1038 flow. Second operand 8 states and 105 transitions. [2024-01-31 17:21:49,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 1480 flow [2024-01-31 17:21:49,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 1454 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-31 17:21:49,872 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 1077 flow [2024-01-31 17:21:49,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1077, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-01-31 17:21:49,872 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 75 predicate places. [2024-01-31 17:21:49,873 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 1077 flow [2024-01-31 17:21:49,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:49,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:49,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:49,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 17:21:49,873 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:49,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash -679550705, now seen corresponding path program 2 times [2024-01-31 17:21:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:49,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187229779] [2024-01-31 17:21:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:49,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187229779] [2024-01-31 17:21:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187229779] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336243653] [2024-01-31 17:21:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:49,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:49,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 1077 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:49,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:49,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:49,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:50,054 INFO L124 PetriNetUnfolderBase]: 297/620 cut-off events. [2024-01-31 17:21:50,054 INFO L125 PetriNetUnfolderBase]: For 4854/4862 co-relation queries the response was YES. [2024-01-31 17:21:50,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 620 events. 297/620 cut-off events. For 4854/4862 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3177 event pairs, 23 based on Foata normal form. 20/635 useless extension candidates. Maximal degree in co-relation 2947. Up to 198 conditions per place. [2024-01-31 17:21:50,061 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 66 selfloop transitions, 24 changer transitions 3/107 dead transitions. [2024-01-31 17:21:50,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 1390 flow [2024-01-31 17:21:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:21:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:21:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-01-31 17:21:50,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-01-31 17:21:50,062 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 1077 flow. Second operand 6 states and 76 transitions. [2024-01-31 17:21:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 1390 flow [2024-01-31 17:21:50,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 1334 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 17:21:50,078 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 983 flow [2024-01-31 17:21:50,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=983, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2024-01-31 17:21:50,079 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2024-01-31 17:21:50,079 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 983 flow [2024-01-31 17:21:50,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:50,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:50,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 17:21:50,080 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:50,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:50,080 INFO L85 PathProgramCache]: Analyzing trace with hash -822119048, now seen corresponding path program 4 times [2024-01-31 17:21:50,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:50,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898467908] [2024-01-31 17:21:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:50,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:50,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898467908] [2024-01-31 17:21:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898467908] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:50,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451278406] [2024-01-31 17:21:50,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:50,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:50,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:50,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 983 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:50,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:50,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:50,250 INFO L124 PetriNetUnfolderBase]: 262/541 cut-off events. [2024-01-31 17:21:50,251 INFO L125 PetriNetUnfolderBase]: For 4635/4641 co-relation queries the response was YES. [2024-01-31 17:21:50,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 541 events. 262/541 cut-off events. For 4635/4641 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2568 event pairs, 32 based on Foata normal form. 14/553 useless extension candidates. Maximal degree in co-relation 2575. Up to 297 conditions per place. [2024-01-31 17:21:50,256 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 62 selfloop transitions, 21 changer transitions 1/98 dead transitions. [2024-01-31 17:21:50,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 1200 flow [2024-01-31 17:21:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:21:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:21:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-01-31 17:21:50,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:21:50,258 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 983 flow. Second operand 5 states and 69 transitions. [2024-01-31 17:21:50,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 1200 flow [2024-01-31 17:21:50,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 1148 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:50,271 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 921 flow [2024-01-31 17:21:50,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=921, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-01-31 17:21:50,272 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 75 predicate places. [2024-01-31 17:21:50,272 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 921 flow [2024-01-31 17:21:50,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:50,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:50,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 17:21:50,273 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:50,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash -60205933, now seen corresponding path program 3 times [2024-01-31 17:21:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230578417] [2024-01-31 17:21:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:50,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:50,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230578417] [2024-01-31 17:21:50,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230578417] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:50,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:50,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:50,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136466435] [2024-01-31 17:21:50,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:50,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:50,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:50,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:50,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:50,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:50,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:50,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:50,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:50,448 INFO L124 PetriNetUnfolderBase]: 332/662 cut-off events. [2024-01-31 17:21:50,448 INFO L125 PetriNetUnfolderBase]: For 5651/5653 co-relation queries the response was YES. [2024-01-31 17:21:50,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 662 events. 332/662 cut-off events. For 5651/5653 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3320 event pairs, 100 based on Foata normal form. 12/667 useless extension candidates. Maximal degree in co-relation 3219. Up to 402 conditions per place. [2024-01-31 17:21:50,458 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 72 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2024-01-31 17:21:50,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 117 transitions, 1499 flow [2024-01-31 17:21:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:21:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:21:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-01-31 17:21:50,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260869565217392 [2024-01-31 17:21:50,460 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 921 flow. Second operand 5 states and 72 transitions. [2024-01-31 17:21:50,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 117 transitions, 1499 flow [2024-01-31 17:21:50,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 1416 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-01-31 17:21:50,474 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 1206 flow [2024-01-31 17:21:50,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1206, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-01-31 17:21:50,475 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 73 predicate places. [2024-01-31 17:21:50,475 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 1206 flow [2024-01-31 17:21:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:50,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 17:21:50,477 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash -402761581, now seen corresponding path program 4 times [2024-01-31 17:21:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444685122] [2024-01-31 17:21:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444685122] [2024-01-31 17:21:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444685122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597339340] [2024-01-31 17:21:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:50,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:50,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 1206 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:50,643 INFO L124 PetriNetUnfolderBase]: 320/651 cut-off events. [2024-01-31 17:21:50,644 INFO L125 PetriNetUnfolderBase]: For 5479/5481 co-relation queries the response was YES. [2024-01-31 17:21:50,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 651 events. 320/651 cut-off events. For 5479/5481 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3289 event pairs, 62 based on Foata normal form. 12/658 useless extension candidates. Maximal degree in co-relation 2531. Up to 256 conditions per place. [2024-01-31 17:21:50,653 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 68 selfloop transitions, 32 changer transitions 3/117 dead transitions. [2024-01-31 17:21:50,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 117 transitions, 1564 flow [2024-01-31 17:21:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:21:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:21:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-01-31 17:21:50,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-01-31 17:21:50,654 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 1206 flow. Second operand 7 states and 83 transitions. [2024-01-31 17:21:50,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 117 transitions, 1564 flow [2024-01-31 17:21:50,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 117 transitions, 1544 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-01-31 17:21:50,670 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 1260 flow [2024-01-31 17:21:50,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1260, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-01-31 17:21:50,674 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 80 predicate places. [2024-01-31 17:21:50,674 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 1260 flow [2024-01-31 17:21:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:50,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:50,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 17:21:50,675 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:50,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2118961818, now seen corresponding path program 5 times [2024-01-31 17:21:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:50,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722634249] [2024-01-31 17:21:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722634249] [2024-01-31 17:21:50,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722634249] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:50,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:50,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200830493] [2024-01-31 17:21:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:50,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:50,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:50,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:50,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:50,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:50,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:50,839 INFO L124 PetriNetUnfolderBase]: 270/556 cut-off events. [2024-01-31 17:21:50,839 INFO L125 PetriNetUnfolderBase]: For 5028/5028 co-relation queries the response was YES. [2024-01-31 17:21:50,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 556 events. 270/556 cut-off events. For 5028/5028 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2655 event pairs, 22 based on Foata normal form. 16/570 useless extension candidates. Maximal degree in co-relation 2526. Up to 169 conditions per place. [2024-01-31 17:21:50,849 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 72 selfloop transitions, 22 changer transitions 3/110 dead transitions. [2024-01-31 17:21:50,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 1517 flow [2024-01-31 17:21:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:21:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:21:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-01-31 17:21:50,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-01-31 17:21:50,851 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 1260 flow. Second operand 6 states and 76 transitions. [2024-01-31 17:21:50,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 1517 flow [2024-01-31 17:21:50,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 1448 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-01-31 17:21:50,866 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 1097 flow [2024-01-31 17:21:50,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1097, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-01-31 17:21:50,868 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 81 predicate places. [2024-01-31 17:21:50,868 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 1097 flow [2024-01-31 17:21:50,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:50,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:21:50,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 17:21:50,869 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:50,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash 870175815, now seen corresponding path program 5 times [2024-01-31 17:21:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18761977] [2024-01-31 17:21:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:50,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18761977] [2024-01-31 17:21:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18761977] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:50,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:21:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036970966] [2024-01-31 17:21:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:21:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:50,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:21:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:21:50,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:21:50,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 1097 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:50,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:50,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:21:50,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:51,047 INFO L124 PetriNetUnfolderBase]: 239/473 cut-off events. [2024-01-31 17:21:51,048 INFO L125 PetriNetUnfolderBase]: For 4649/4651 co-relation queries the response was YES. [2024-01-31 17:21:51,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 473 events. 239/473 cut-off events. For 4649/4651 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2093 event pairs, 42 based on Foata normal form. 6/473 useless extension candidates. Maximal degree in co-relation 2212. Up to 146 conditions per place. [2024-01-31 17:21:51,052 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 65 selfloop transitions, 27 changer transitions 2/107 dead transitions. [2024-01-31 17:21:51,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 107 transitions, 1379 flow [2024-01-31 17:21:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:21:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:21:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-01-31 17:21:51,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-01-31 17:21:51,053 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 1097 flow. Second operand 8 states and 95 transitions. [2024-01-31 17:21:51,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 107 transitions, 1379 flow [2024-01-31 17:21:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 1304 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:51,065 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 1009 flow [2024-01-31 17:21:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-01-31 17:21:51,066 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2024-01-31 17:21:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 1009 flow [2024-01-31 17:21:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:21:51,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:51,067 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 17:21:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 17:21:51,067 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -753432383, now seen corresponding path program 1 times [2024-01-31 17:21:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033907229] [2024-01-31 17:21:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033907229] [2024-01-31 17:21:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033907229] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933814042] [2024-01-31 17:21:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:51,188 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 17:21:51,197 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 17:21:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:51,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:21:51,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:51,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:51,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933814042] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:21:51,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:21:51,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:21:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355281713] [2024-01-31 17:21:51,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:21:51,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:21:51,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:21:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:21:51,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:51,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 1009 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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 17:21:51,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:51,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:51,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:52,938 INFO L124 PetriNetUnfolderBase]: 727/1379 cut-off events. [2024-01-31 17:21:52,938 INFO L125 PetriNetUnfolderBase]: For 10178/10178 co-relation queries the response was YES. [2024-01-31 17:21:52,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1379 events. 727/1379 cut-off events. For 10178/10178 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7522 event pairs, 43 based on Foata normal form. 2/1381 useless extension candidates. Maximal degree in co-relation 6108. Up to 241 conditions per place. [2024-01-31 17:21:52,950 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 135 selfloop transitions, 85 changer transitions 72/293 dead transitions. [2024-01-31 17:21:52,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 293 transitions, 3354 flow [2024-01-31 17:21:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-01-31 17:21:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-01-31 17:21:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 325 transitions. [2024-01-31 17:21:52,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.392512077294686 [2024-01-31 17:21:52,952 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 1009 flow. Second operand 36 states and 325 transitions. [2024-01-31 17:21:52,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 293 transitions, 3354 flow [2024-01-31 17:21:52,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 3141 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 17:21:52,972 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 1900 flow [2024-01-31 17:21:52,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1900, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-01-31 17:21:52,973 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 125 predicate places. [2024-01-31 17:21:52,973 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 1900 flow [2024-01-31 17:21:52,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 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 17:21:52,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:52,973 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 17:21:52,991 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 17:21:53,187 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,SelfDestructingSolverStorable30 [2024-01-31 17:21:53,188 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:53,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1605833197, now seen corresponding path program 2 times [2024-01-31 17:21:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:53,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801442079] [2024-01-31 17:21:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:53,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801442079] [2024-01-31 17:21:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801442079] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708492334] [2024-01-31 17:21:53,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:21:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:53,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:53,487 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 17:21:53,489 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 17:21:53,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:21:53,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:21:53,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:21:53,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:53,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:53,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708492334] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:21:53,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:21:53,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:21:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280320691] [2024-01-31 17:21:53,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:21:53,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:21:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:21:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:21:53,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:53,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 1900 flow. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:21:53,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:53,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:53,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:54,519 INFO L124 PetriNetUnfolderBase]: 784/1575 cut-off events. [2024-01-31 17:21:54,520 INFO L125 PetriNetUnfolderBase]: For 11850/11850 co-relation queries the response was YES. [2024-01-31 17:21:54,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7862 conditions, 1575 events. 784/1575 cut-off events. For 11850/11850 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9418 event pairs, 119 based on Foata normal form. 3/1578 useless extension candidates. Maximal degree in co-relation 7765. Up to 675 conditions per place. [2024-01-31 17:21:54,538 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 103 selfloop transitions, 97 changer transitions 19/220 dead transitions. [2024-01-31 17:21:54,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 220 transitions, 3287 flow [2024-01-31 17:21:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:21:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:21:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 133 transitions. [2024-01-31 17:21:54,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-01-31 17:21:54,540 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 1900 flow. Second operand 14 states and 133 transitions. [2024-01-31 17:21:54,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 220 transitions, 3287 flow [2024-01-31 17:21:54,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 220 transitions, 2773 flow, removed 175 selfloop flow, removed 17 redundant places. [2024-01-31 17:21:54,586 INFO L231 Difference]: Finished difference. Result has 140 places, 159 transitions, 2201 flow [2024-01-31 17:21:54,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2201, PETRI_PLACES=140, PETRI_TRANSITIONS=159} [2024-01-31 17:21:54,588 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 115 predicate places. [2024-01-31 17:21:54,588 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 159 transitions, 2201 flow [2024-01-31 17:21:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:21:54,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:54,589 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 17:21:54,608 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 17:21:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:54,804 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:54,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1804945307, now seen corresponding path program 3 times [2024-01-31 17:21:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125289074] [2024-01-31 17:21:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:54,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:54,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125289074] [2024-01-31 17:21:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125289074] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:54,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83402759] [2024-01-31 17:21:54,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:21:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:54,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:54,964 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 17:21:54,988 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 17:21:55,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 17:21:55,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:21:55,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:21:55,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:55,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:55,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83402759] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:21:55,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:21:55,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:21:55,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016300347] [2024-01-31 17:21:55,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:21:55,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:21:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:21:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:21:55,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:55,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 159 transitions, 2201 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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 17:21:55,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:55,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:55,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:55,986 INFO L124 PetriNetUnfolderBase]: 935/1903 cut-off events. [2024-01-31 17:21:55,987 INFO L125 PetriNetUnfolderBase]: For 12771/12771 co-relation queries the response was YES. [2024-01-31 17:21:55,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 1903 events. 935/1903 cut-off events. For 12771/12771 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12208 event pairs, 129 based on Foata normal form. 4/1907 useless extension candidates. Maximal degree in co-relation 8811. Up to 632 conditions per place. [2024-01-31 17:21:56,003 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 87 selfloop transitions, 151 changer transitions 14/253 dead transitions. [2024-01-31 17:21:56,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 253 transitions, 3690 flow [2024-01-31 17:21:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 17:21:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 17:21:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-01-31 17:21:56,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38618925831202044 [2024-01-31 17:21:56,005 INFO L175 Difference]: Start difference. First operand has 140 places, 159 transitions, 2201 flow. Second operand 17 states and 151 transitions. [2024-01-31 17:21:56,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 253 transitions, 3690 flow [2024-01-31 17:21:56,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 253 transitions, 3591 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-01-31 17:21:56,054 INFO L231 Difference]: Finished difference. Result has 156 places, 203 transitions, 3257 flow [2024-01-31 17:21:56,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3257, PETRI_PLACES=156, PETRI_TRANSITIONS=203} [2024-01-31 17:21:56,055 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 131 predicate places. [2024-01-31 17:21:56,055 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 203 transitions, 3257 flow [2024-01-31 17:21:56,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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 17:21:56,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:56,056 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 17:21:56,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:21:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:56,268 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:56,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1211560697, now seen corresponding path program 4 times [2024-01-31 17:21:56,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542608481] [2024-01-31 17:21:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542608481] [2024-01-31 17:21:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542608481] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496043748] [2024-01-31 17:21:56,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:21:56,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:56,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:56,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:21:56,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:21:56,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:21:56,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:21:56,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:21:56,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:56,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:56,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496043748] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:21:56,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:21:56,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:21:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312231929] [2024-01-31 17:21:56,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:21:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:21:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:21:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:21:56,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:56,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 203 transitions, 3257 flow. Second operand has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 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 17:21:56,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:56,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:56,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:57,455 INFO L124 PetriNetUnfolderBase]: 911/1849 cut-off events. [2024-01-31 17:21:57,456 INFO L125 PetriNetUnfolderBase]: For 15886/15886 co-relation queries the response was YES. [2024-01-31 17:21:57,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 1849 events. 911/1849 cut-off events. For 15886/15886 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11710 event pairs, 119 based on Foata normal form. 4/1853 useless extension candidates. Maximal degree in co-relation 9616. Up to 651 conditions per place. [2024-01-31 17:21:57,472 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 89 selfloop transitions, 144 changer transitions 20/254 dead transitions. [2024-01-31 17:21:57,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 254 transitions, 4097 flow [2024-01-31 17:21:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 17:21:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 17:21:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 152 transitions. [2024-01-31 17:21:57,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887468030690537 [2024-01-31 17:21:57,475 INFO L175 Difference]: Start difference. First operand has 156 places, 203 transitions, 3257 flow. Second operand 17 states and 152 transitions. [2024-01-31 17:21:57,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 254 transitions, 4097 flow [2024-01-31 17:21:57,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 254 transitions, 3896 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-01-31 17:21:57,546 INFO L231 Difference]: Finished difference. Result has 168 places, 200 transitions, 3295 flow [2024-01-31 17:21:57,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3295, PETRI_PLACES=168, PETRI_TRANSITIONS=200} [2024-01-31 17:21:57,546 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 143 predicate places. [2024-01-31 17:21:57,546 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 200 transitions, 3295 flow [2024-01-31 17:21:57,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 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 17:21:57,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:57,547 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 17:21:57,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:21:57,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-01-31 17:21:57,760 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:57,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1044231857, now seen corresponding path program 5 times [2024-01-31 17:21:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662495797] [2024-01-31 17:21:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662495797] [2024-01-31 17:21:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662495797] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919604742] [2024-01-31 17:21:57,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:21:57,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:57,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:57,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:21:57,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:21:57,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:21:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:21:57,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:21:57,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:58,045 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 17:21:58,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:21:58,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919604742] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:58,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:21:58,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-01-31 17:21:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825239063] [2024-01-31 17:21:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:58,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:21:58,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:21:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-01-31 17:21:58,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:58,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 200 transitions, 3295 flow. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:21:58,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:58,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:58,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:58,379 INFO L124 PetriNetUnfolderBase]: 827/1661 cut-off events. [2024-01-31 17:21:58,379 INFO L125 PetriNetUnfolderBase]: For 15858/15858 co-relation queries the response was YES. [2024-01-31 17:21:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9342 conditions, 1661 events. 827/1661 cut-off events. For 15858/15858 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9997 event pairs, 175 based on Foata normal form. 2/1663 useless extension candidates. Maximal degree in co-relation 9209. Up to 1055 conditions per place. [2024-01-31 17:21:58,396 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 125 selfloop transitions, 61 changer transitions 46/233 dead transitions. [2024-01-31 17:21:58,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 233 transitions, 4100 flow [2024-01-31 17:21:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:21:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:21:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-01-31 17:21:58,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41545893719806765 [2024-01-31 17:21:58,399 INFO L175 Difference]: Start difference. First operand has 168 places, 200 transitions, 3295 flow. Second operand 9 states and 86 transitions. [2024-01-31 17:21:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 233 transitions, 4100 flow [2024-01-31 17:21:58,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 233 transitions, 3846 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-01-31 17:21:58,463 INFO L231 Difference]: Finished difference. Result has 162 places, 173 transitions, 2693 flow [2024-01-31 17:21:58,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2693, PETRI_PLACES=162, PETRI_TRANSITIONS=173} [2024-01-31 17:21:58,463 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 137 predicate places. [2024-01-31 17:21:58,464 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 173 transitions, 2693 flow [2024-01-31 17:21:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:21:58,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:58,464 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 17:21:58,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:21:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:58,679 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:58,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 133817405, now seen corresponding path program 6 times [2024-01-31 17:21:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499401092] [2024-01-31 17:21:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:58,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:58,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499401092] [2024-01-31 17:21:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499401092] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987267678] [2024-01-31 17:21:58,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:21:58,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:58,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:58,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:21:58,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:21:58,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:21:58,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:21:58,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:21:58,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:21:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:58,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987267678] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:21:59,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:21:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-01-31 17:21:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890408305] [2024-01-31 17:21:59,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:21:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:21:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:21:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:21:59,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:21:59,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 173 transitions, 2693 flow. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 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 17:21:59,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:59,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:21:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:59,537 INFO L124 PetriNetUnfolderBase]: 771/1558 cut-off events. [2024-01-31 17:21:59,538 INFO L125 PetriNetUnfolderBase]: For 13245/13245 co-relation queries the response was YES. [2024-01-31 17:21:59,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1558 events. 771/1558 cut-off events. For 13245/13245 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9397 event pairs, 109 based on Foata normal form. 7/1565 useless extension candidates. Maximal degree in co-relation 7967. Up to 691 conditions per place. [2024-01-31 17:21:59,552 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 101 selfloop transitions, 75 changer transitions 41/218 dead transitions. [2024-01-31 17:21:59,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 218 transitions, 3534 flow [2024-01-31 17:21:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:21:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:21:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-01-31 17:21:59,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39855072463768115 [2024-01-31 17:21:59,553 INFO L175 Difference]: Start difference. First operand has 162 places, 173 transitions, 2693 flow. Second operand 12 states and 110 transitions. [2024-01-31 17:21:59,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 218 transitions, 3534 flow [2024-01-31 17:21:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 218 transitions, 3161 flow, removed 23 selfloop flow, removed 17 redundant places. [2024-01-31 17:21:59,598 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2161 flow [2024-01-31 17:21:59,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2161, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2024-01-31 17:21:59,599 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 120 predicate places. [2024-01-31 17:21:59,599 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2161 flow [2024-01-31 17:21:59,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 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 17:21:59,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:59,599 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 17:21:59,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 17:21:59,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:59,813 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:21:59,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1109023601, now seen corresponding path program 7 times [2024-01-31 17:21:59,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:59,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376638841] [2024-01-31 17:21:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:21:59,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376638841] [2024-01-31 17:21:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376638841] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:21:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720136788] [2024-01-31 17:21:59,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:21:59,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:21:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:59,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:21:59,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 17:22:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:00,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:00,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:00,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720136788] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:00,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502388917] [2024-01-31 17:22:00,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:00,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:00,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:00,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:00,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2161 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 17:22:00,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:00,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:00,681 INFO L124 PetriNetUnfolderBase]: 625/1309 cut-off events. [2024-01-31 17:22:00,681 INFO L125 PetriNetUnfolderBase]: For 9145/9145 co-relation queries the response was YES. [2024-01-31 17:22:00,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 1309 events. 625/1309 cut-off events. For 9145/9145 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7790 event pairs, 107 based on Foata normal form. 4/1313 useless extension candidates. Maximal degree in co-relation 6229. Up to 623 conditions per place. [2024-01-31 17:22:00,692 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 90 selfloop transitions, 79 changer transitions 24/194 dead transitions. [2024-01-31 17:22:00,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 194 transitions, 2886 flow [2024-01-31 17:22:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:22:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:22:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-01-31 17:22:00,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-01-31 17:22:00,697 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2161 flow. Second operand 12 states and 115 transitions. [2024-01-31 17:22:00,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 194 transitions, 2886 flow [2024-01-31 17:22:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 194 transitions, 2649 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-01-31 17:22:00,728 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1987 flow [2024-01-31 17:22:00,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1987, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-01-31 17:22:00,728 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 118 predicate places. [2024-01-31 17:22:00,729 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1987 flow [2024-01-31 17:22:00,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 17:22:00,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:00,729 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 17:22:00,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-01-31 17:22:00,944 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:00,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -521278279, now seen corresponding path program 8 times [2024-01-31 17:22:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587646202] [2024-01-31 17:22:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:01,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587646202] [2024-01-31 17:22:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587646202] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479948340] [2024-01-31 17:22:01,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:01,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:01,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:01,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 17:22:01,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:01,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:01,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:01,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:01,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:01,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479948340] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:01,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474650589] [2024-01-31 17:22:01,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:01,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:01,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:01,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:01,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1987 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 17:22:01,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:01,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:01,767 INFO L124 PetriNetUnfolderBase]: 559/1145 cut-off events. [2024-01-31 17:22:01,768 INFO L125 PetriNetUnfolderBase]: For 8670/8670 co-relation queries the response was YES. [2024-01-31 17:22:01,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 1145 events. 559/1145 cut-off events. For 8670/8670 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6388 event pairs, 107 based on Foata normal form. 5/1150 useless extension candidates. Maximal degree in co-relation 5647. Up to 591 conditions per place. [2024-01-31 17:22:01,777 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 76 selfloop transitions, 56 changer transitions 36/169 dead transitions. [2024-01-31 17:22:01,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 169 transitions, 2578 flow [2024-01-31 17:22:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:22:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:22:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-01-31 17:22:01,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2024-01-31 17:22:01,778 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1987 flow. Second operand 12 states and 105 transitions. [2024-01-31 17:22:01,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 169 transitions, 2578 flow [2024-01-31 17:22:01,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 169 transitions, 2508 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-01-31 17:22:01,806 INFO L231 Difference]: Finished difference. Result has 146 places, 114 transitions, 1625 flow [2024-01-31 17:22:01,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1625, PETRI_PLACES=146, PETRI_TRANSITIONS=114} [2024-01-31 17:22:01,807 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 121 predicate places. [2024-01-31 17:22:01,807 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 114 transitions, 1625 flow [2024-01-31 17:22:01,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 17:22:01,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:01,808 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 17:22:01,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:02,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-01-31 17:22:02,022 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:02,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:02,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1670682725, now seen corresponding path program 9 times [2024-01-31 17:22:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:02,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7554962] [2024-01-31 17:22:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7554962] [2024-01-31 17:22:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7554962] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896936694] [2024-01-31 17:22:02,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:02,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:02,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:02,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 17:22:02,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:22:02,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:02,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:02,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:02,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896936694] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:02,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:02,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-01-31 17:22:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895341096] [2024-01-31 17:22:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 17:22:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 17:22:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-01-31 17:22:02,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:02,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 114 transitions, 1625 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 17:22:02,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:02,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:03,142 INFO L124 PetriNetUnfolderBase]: 906/1878 cut-off events. [2024-01-31 17:22:03,143 INFO L125 PetriNetUnfolderBase]: For 13126/13126 co-relation queries the response was YES. [2024-01-31 17:22:03,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1878 events. 906/1878 cut-off events. For 13126/13126 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12137 event pairs, 77 based on Foata normal form. 16/1894 useless extension candidates. Maximal degree in co-relation 8951. Up to 472 conditions per place. [2024-01-31 17:22:03,155 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 98 selfloop transitions, 151 changer transitions 22/272 dead transitions. [2024-01-31 17:22:03,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 272 transitions, 4055 flow [2024-01-31 17:22:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 17:22:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 17:22:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 209 transitions. [2024-01-31 17:22:03,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786231884057971 [2024-01-31 17:22:03,161 INFO L175 Difference]: Start difference. First operand has 146 places, 114 transitions, 1625 flow. Second operand 24 states and 209 transitions. [2024-01-31 17:22:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 272 transitions, 4055 flow [2024-01-31 17:22:03,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 272 transitions, 3635 flow, removed 21 selfloop flow, removed 17 redundant places. [2024-01-31 17:22:03,196 INFO L231 Difference]: Finished difference. Result has 152 places, 198 transitions, 3124 flow [2024-01-31 17:22:03,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3124, PETRI_PLACES=152, PETRI_TRANSITIONS=198} [2024-01-31 17:22:03,197 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 127 predicate places. [2024-01-31 17:22:03,197 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 198 transitions, 3124 flow [2024-01-31 17:22:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 17:22:03,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:03,198 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 17:22:03,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-01-31 17:22:03,415 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:03,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1061765221, now seen corresponding path program 10 times [2024-01-31 17:22:03,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:03,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868195730] [2024-01-31 17:22:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:03,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868195730] [2024-01-31 17:22:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868195730] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467235272] [2024-01-31 17:22:03,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:03,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:03,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:03,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-31 17:22:03,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:03,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:03,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:03,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:03,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467235272] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:03,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:03,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-01-31 17:22:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961968752] [2024-01-31 17:22:03,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:03,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 17:22:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 17:22:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-01-31 17:22:03,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:03,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 198 transitions, 3124 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 17:22:03,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:03,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:03,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:04,556 INFO L124 PetriNetUnfolderBase]: 779/1603 cut-off events. [2024-01-31 17:22:04,556 INFO L125 PetriNetUnfolderBase]: For 13248/13248 co-relation queries the response was YES. [2024-01-31 17:22:04,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 1603 events. 779/1603 cut-off events. For 13248/13248 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9891 event pairs, 71 based on Foata normal form. 10/1613 useless extension candidates. Maximal degree in co-relation 8049. Up to 405 conditions per place. [2024-01-31 17:22:04,565 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 89 selfloop transitions, 132 changer transitions 24/246 dead transitions. [2024-01-31 17:22:04,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 246 transitions, 3849 flow [2024-01-31 17:22:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-01-31 17:22:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-01-31 17:22:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 192 transitions. [2024-01-31 17:22:04,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794466403162055 [2024-01-31 17:22:04,567 INFO L175 Difference]: Start difference. First operand has 152 places, 198 transitions, 3124 flow. Second operand 22 states and 192 transitions. [2024-01-31 17:22:04,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 246 transitions, 3849 flow [2024-01-31 17:22:04,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 246 transitions, 3567 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-01-31 17:22:04,618 INFO L231 Difference]: Finished difference. Result has 165 places, 175 transitions, 2761 flow [2024-01-31 17:22:04,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2761, PETRI_PLACES=165, PETRI_TRANSITIONS=175} [2024-01-31 17:22:04,619 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 140 predicate places. [2024-01-31 17:22:04,619 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 175 transitions, 2761 flow [2024-01-31 17:22:04,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 17:22:04,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:04,620 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 17:22:04,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-01-31 17:22:04,834 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:04,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 81528669, now seen corresponding path program 11 times [2024-01-31 17:22:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984052799] [2024-01-31 17:22:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984052799] [2024-01-31 17:22:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984052799] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536139806] [2024-01-31 17:22:04,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:22:04,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:04,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:04,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:04,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-31 17:22:05,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:05,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:05,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:22:05,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:05,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536139806] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:05,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-01-31 17:22:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258318777] [2024-01-31 17:22:05,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:05,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:22:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:22:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:22:05,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:05,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 175 transitions, 2761 flow. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 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 17:22:05,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:05,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:05,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:05,563 INFO L124 PetriNetUnfolderBase]: 749/1549 cut-off events. [2024-01-31 17:22:05,563 INFO L125 PetriNetUnfolderBase]: For 12236/12236 co-relation queries the response was YES. [2024-01-31 17:22:05,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7951 conditions, 1549 events. 749/1549 cut-off events. For 12236/12236 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9446 event pairs, 187 based on Foata normal form. 4/1553 useless extension candidates. Maximal degree in co-relation 7863. Up to 971 conditions per place. [2024-01-31 17:22:05,575 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 103 selfloop transitions, 57 changer transitions 50/211 dead transitions. [2024-01-31 17:22:05,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 211 transitions, 3445 flow [2024-01-31 17:22:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 17:22:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 17:22:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 114 transitions. [2024-01-31 17:22:05,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38127090301003347 [2024-01-31 17:22:05,576 INFO L175 Difference]: Start difference. First operand has 165 places, 175 transitions, 2761 flow. Second operand 13 states and 114 transitions. [2024-01-31 17:22:05,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 211 transitions, 3445 flow [2024-01-31 17:22:05,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 211 transitions, 3218 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-01-31 17:22:05,644 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 2147 flow [2024-01-31 17:22:05,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2147, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2024-01-31 17:22:05,647 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 131 predicate places. [2024-01-31 17:22:05,647 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 2147 flow [2024-01-31 17:22:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 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 17:22:05,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:05,648 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 17:22:05,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:05,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:05,862 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:05,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -296030141, now seen corresponding path program 12 times [2024-01-31 17:22:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:05,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360376202] [2024-01-31 17:22:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:05,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:06,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360376202] [2024-01-31 17:22:06,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360376202] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820753765] [2024-01-31 17:22:06,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:22:06,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:06,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:06,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:06,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-31 17:22:06,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-31 17:22:06,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:06,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:06,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:06,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820753765] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:06,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-01-31 17:22:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352509793] [2024-01-31 17:22:06,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 17:22:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 17:22:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:22:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:06,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 2147 flow. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 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 17:22:06,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:06,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:06,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:07,025 INFO L124 PetriNetUnfolderBase]: 595/1272 cut-off events. [2024-01-31 17:22:07,025 INFO L125 PetriNetUnfolderBase]: For 10223/10223 co-relation queries the response was YES. [2024-01-31 17:22:07,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 1272 events. 595/1272 cut-off events. For 10223/10223 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7526 event pairs, 87 based on Foata normal form. 12/1284 useless extension candidates. Maximal degree in co-relation 6121. Up to 448 conditions per place. [2024-01-31 17:22:07,031 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 83 selfloop transitions, 86 changer transitions 22/192 dead transitions. [2024-01-31 17:22:07,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 192 transitions, 2786 flow [2024-01-31 17:22:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 17:22:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 17:22:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 180 transitions. [2024-01-31 17:22:07,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34026465028355385 [2024-01-31 17:22:07,033 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 2147 flow. Second operand 23 states and 180 transitions. [2024-01-31 17:22:07,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 192 transitions, 2786 flow [2024-01-31 17:22:07,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 192 transitions, 2629 flow, removed 35 selfloop flow, removed 16 redundant places. [2024-01-31 17:22:07,063 INFO L231 Difference]: Finished difference. Result has 162 places, 134 transitions, 2129 flow [2024-01-31 17:22:07,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2129, PETRI_PLACES=162, PETRI_TRANSITIONS=134} [2024-01-31 17:22:07,064 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 137 predicate places. [2024-01-31 17:22:07,064 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 134 transitions, 2129 flow [2024-01-31 17:22:07,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 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 17:22:07,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:07,064 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 17:22:07,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:07,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-01-31 17:22:07,265 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1582745991, now seen corresponding path program 13 times [2024-01-31 17:22:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370170608] [2024-01-31 17:22:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:07,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370170608] [2024-01-31 17:22:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370170608] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131532502] [2024-01-31 17:22:07,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:22:07,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:07,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:07,371 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:07,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-01-31 17:22:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:07,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:07,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:07,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131532502] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:07,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-01-31 17:22:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084615747] [2024-01-31 17:22:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:07,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 17:22:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 17:22:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-01-31 17:22:07,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:07,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 134 transitions, 2129 flow. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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 17:22:07,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:07,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:07,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:08,522 INFO L124 PetriNetUnfolderBase]: 611/1339 cut-off events. [2024-01-31 17:22:08,522 INFO L125 PetriNetUnfolderBase]: For 10019/10019 co-relation queries the response was YES. [2024-01-31 17:22:08,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6427 conditions, 1339 events. 611/1339 cut-off events. For 10019/10019 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8364 event pairs, 39 based on Foata normal form. 3/1342 useless extension candidates. Maximal degree in co-relation 6291. Up to 403 conditions per place. [2024-01-31 17:22:08,529 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 85 selfloop transitions, 83 changer transitions 45/214 dead transitions. [2024-01-31 17:22:08,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 214 transitions, 2914 flow [2024-01-31 17:22:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-01-31 17:22:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-01-31 17:22:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 218 transitions. [2024-01-31 17:22:08,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36454849498327757 [2024-01-31 17:22:08,530 INFO L175 Difference]: Start difference. First operand has 162 places, 134 transitions, 2129 flow. Second operand 26 states and 218 transitions. [2024-01-31 17:22:08,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 214 transitions, 2914 flow [2024-01-31 17:22:08,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 214 transitions, 2758 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-01-31 17:22:08,557 INFO L231 Difference]: Finished difference. Result has 180 places, 128 transitions, 2054 flow [2024-01-31 17:22:08,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2054, PETRI_PLACES=180, PETRI_TRANSITIONS=128} [2024-01-31 17:22:08,558 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 155 predicate places. [2024-01-31 17:22:08,558 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 128 transitions, 2054 flow [2024-01-31 17:22:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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 17:22:08,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:08,558 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 17:22:08,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:08,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:08,759 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:08,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1980492827, now seen corresponding path program 14 times [2024-01-31 17:22:08,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:08,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310838532] [2024-01-31 17:22:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:08,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310838532] [2024-01-31 17:22:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310838532] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874309750] [2024-01-31 17:22:08,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:08,876 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:08,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-01-31 17:22:08,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:08,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:08,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:08,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:09,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874309750] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:09,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-01-31 17:22:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627493477] [2024-01-31 17:22:09,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:22:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:22:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:22:09,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:09,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 128 transitions, 2054 flow. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:09,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:09,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:09,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:09,840 INFO L124 PetriNetUnfolderBase]: 569/1248 cut-off events. [2024-01-31 17:22:09,840 INFO L125 PetriNetUnfolderBase]: For 9764/9764 co-relation queries the response was YES. [2024-01-31 17:22:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6261 conditions, 1248 events. 569/1248 cut-off events. For 9764/9764 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7573 event pairs, 19 based on Foata normal form. 2/1250 useless extension candidates. Maximal degree in co-relation 6125. Up to 520 conditions per place. [2024-01-31 17:22:09,846 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 78 selfloop transitions, 85 changer transitions 23/187 dead transitions. [2024-01-31 17:22:09,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 187 transitions, 2766 flow [2024-01-31 17:22:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 17:22:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 17:22:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 178 transitions. [2024-01-31 17:22:09,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33648393194706994 [2024-01-31 17:22:09,848 INFO L175 Difference]: Start difference. First operand has 180 places, 128 transitions, 2054 flow. Second operand 23 states and 178 transitions. [2024-01-31 17:22:09,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 187 transitions, 2766 flow [2024-01-31 17:22:09,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 187 transitions, 2461 flow, removed 14 selfloop flow, removed 29 redundant places. [2024-01-31 17:22:09,881 INFO L231 Difference]: Finished difference. Result has 168 places, 130 transitions, 1997 flow [2024-01-31 17:22:09,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1997, PETRI_PLACES=168, PETRI_TRANSITIONS=130} [2024-01-31 17:22:09,882 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 143 predicate places. [2024-01-31 17:22:09,882 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 130 transitions, 1997 flow [2024-01-31 17:22:09,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:09,883 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 17:22:09,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:10,088 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:10,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 55989947, now seen corresponding path program 15 times [2024-01-31 17:22:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:10,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076803662] [2024-01-31 17:22:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:10,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:10,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076803662] [2024-01-31 17:22:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076803662] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512131873] [2024-01-31 17:22:10,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:10,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:10,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:10,200 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:10,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-01-31 17:22:10,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 17:22:10,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:10,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:10,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:10,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512131873] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:10,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-01-31 17:22:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668910357] [2024-01-31 17:22:10,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:10,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:22:10,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:22:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:22:10,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:10,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 130 transitions, 1997 flow. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:10,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:10,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:10,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:11,067 INFO L124 PetriNetUnfolderBase]: 521/1124 cut-off events. [2024-01-31 17:22:11,068 INFO L125 PetriNetUnfolderBase]: For 8363/8363 co-relation queries the response was YES. [2024-01-31 17:22:11,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 1124 events. 521/1124 cut-off events. For 8363/8363 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6485 event pairs, 15 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 5405. Up to 454 conditions per place. [2024-01-31 17:22:11,076 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 66 selfloop transitions, 79 changer transitions 24/170 dead transitions. [2024-01-31 17:22:11,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 2485 flow [2024-01-31 17:22:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-31 17:22:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-31 17:22:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 151 transitions. [2024-01-31 17:22:11,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282608695652174 [2024-01-31 17:22:11,081 INFO L175 Difference]: Start difference. First operand has 168 places, 130 transitions, 1997 flow. Second operand 20 states and 151 transitions. [2024-01-31 17:22:11,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 2485 flow [2024-01-31 17:22:11,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 2305 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-01-31 17:22:11,107 INFO L231 Difference]: Finished difference. Result has 167 places, 124 transitions, 1895 flow [2024-01-31 17:22:11,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1895, PETRI_PLACES=167, PETRI_TRANSITIONS=124} [2024-01-31 17:22:11,108 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 142 predicate places. [2024-01-31 17:22:11,108 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 124 transitions, 1895 flow [2024-01-31 17:22:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:22:11,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:11,108 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 17:22:11,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-01-31 17:22:11,309 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:11,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534035, now seen corresponding path program 16 times [2024-01-31 17:22:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453266133] [2024-01-31 17:22:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453266133] [2024-01-31 17:22:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453266133] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112389689] [2024-01-31 17:22:11,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:11,405 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:11,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-01-31 17:22:11,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:11,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:11,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:11,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:11,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112389689] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:11,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:11,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:11,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500655039] [2024-01-31 17:22:11,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:11,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:11,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:11,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:11,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:11,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 124 transitions, 1895 flow. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:22:11,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:11,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:11,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:12,131 INFO L124 PetriNetUnfolderBase]: 748/1617 cut-off events. [2024-01-31 17:22:12,132 INFO L125 PetriNetUnfolderBase]: For 12814/12814 co-relation queries the response was YES. [2024-01-31 17:22:12,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1617 events. 748/1617 cut-off events. For 12814/12814 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10341 event pairs, 137 based on Foata normal form. 5/1622 useless extension candidates. Maximal degree in co-relation 7523. Up to 555 conditions per place. [2024-01-31 17:22:12,143 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 124 selfloop transitions, 80 changer transitions 18/223 dead transitions. [2024-01-31 17:22:12,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 223 transitions, 3615 flow [2024-01-31 17:22:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:22:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:22:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 132 transitions. [2024-01-31 17:22:12,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826086956521739 [2024-01-31 17:22:12,145 INFO L175 Difference]: Start difference. First operand has 167 places, 124 transitions, 1895 flow. Second operand 15 states and 132 transitions. [2024-01-31 17:22:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 223 transitions, 3615 flow [2024-01-31 17:22:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 3382 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-01-31 17:22:12,178 INFO L231 Difference]: Finished difference. Result has 166 places, 157 transitions, 2622 flow [2024-01-31 17:22:12,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2622, PETRI_PLACES=166, PETRI_TRANSITIONS=157} [2024-01-31 17:22:12,179 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 141 predicate places. [2024-01-31 17:22:12,179 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 157 transitions, 2622 flow [2024-01-31 17:22:12,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:22:12,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:12,179 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 17:22:12,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:12,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:12,380 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:12,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash 963761637, now seen corresponding path program 17 times [2024-01-31 17:22:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:12,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301114025] [2024-01-31 17:22:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301114025] [2024-01-31 17:22:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301114025] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277577297] [2024-01-31 17:22:12,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:22:12,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:12,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:12,497 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:12,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-01-31 17:22:12,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:12,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:12,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:22:12,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:12,651 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 17:22:12,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:12,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277577297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:12,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:22:12,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-01-31 17:22:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253611543] [2024-01-31 17:22:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:12,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:22:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:22:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-01-31 17:22:12,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:12,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 157 transitions, 2622 flow. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:22:12,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:12,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:12,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:12,855 INFO L124 PetriNetUnfolderBase]: 689/1487 cut-off events. [2024-01-31 17:22:12,855 INFO L125 PetriNetUnfolderBase]: For 12440/12440 co-relation queries the response was YES. [2024-01-31 17:22:12,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1487 events. 689/1487 cut-off events. For 12440/12440 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9258 event pairs, 226 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 7285. Up to 1085 conditions per place. [2024-01-31 17:22:12,862 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 91 selfloop transitions, 37 changer transitions 48/177 dead transitions. [2024-01-31 17:22:12,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 3086 flow [2024-01-31 17:22:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:22:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:22:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-01-31 17:22:12,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-01-31 17:22:12,863 INFO L175 Difference]: Start difference. First operand has 166 places, 157 transitions, 2622 flow. Second operand 9 states and 81 transitions. [2024-01-31 17:22:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 3086 flow [2024-01-31 17:22:12,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 177 transitions, 2972 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-01-31 17:22:12,892 INFO L231 Difference]: Finished difference. Result has 165 places, 126 transitions, 2039 flow [2024-01-31 17:22:12,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2039, PETRI_PLACES=165, PETRI_TRANSITIONS=126} [2024-01-31 17:22:12,893 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 140 predicate places. [2024-01-31 17:22:12,893 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 126 transitions, 2039 flow [2024-01-31 17:22:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:22:12,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:12,893 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 17:22:12,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:13,095 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:13,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1861064207, now seen corresponding path program 18 times [2024-01-31 17:22:13,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:13,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689565087] [2024-01-31 17:22:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:13,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689565087] [2024-01-31 17:22:13,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689565087] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247115193] [2024-01-31 17:22:13,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:22:13,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:13,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:13,204 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:13,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-01-31 17:22:13,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-31 17:22:13,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:13,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:13,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:13,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247115193] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077246470] [2024-01-31 17:22:13,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:13,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:13,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 126 transitions, 2039 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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 17:22:13,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:13,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:13,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:14,008 INFO L124 PetriNetUnfolderBase]: 612/1334 cut-off events. [2024-01-31 17:22:14,009 INFO L125 PetriNetUnfolderBase]: For 9640/9640 co-relation queries the response was YES. [2024-01-31 17:22:14,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1334 events. 612/1334 cut-off events. For 9640/9640 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8303 event pairs, 63 based on Foata normal form. 8/1342 useless extension candidates. Maximal degree in co-relation 6193. Up to 476 conditions per place. [2024-01-31 17:22:14,017 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 74 selfloop transitions, 73 changer transitions 27/175 dead transitions. [2024-01-31 17:22:14,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 175 transitions, 2841 flow [2024-01-31 17:22:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 17:22:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 17:22:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 129 transitions. [2024-01-31 17:22:14,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35054347826086957 [2024-01-31 17:22:14,018 INFO L175 Difference]: Start difference. First operand has 165 places, 126 transitions, 2039 flow. Second operand 16 states and 129 transitions. [2024-01-31 17:22:14,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 175 transitions, 2841 flow [2024-01-31 17:22:14,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 175 transitions, 2508 flow, removed 30 selfloop flow, removed 17 redundant places. [2024-01-31 17:22:14,045 INFO L231 Difference]: Finished difference. Result has 153 places, 122 transitions, 1869 flow [2024-01-31 17:22:14,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1869, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2024-01-31 17:22:14,046 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 128 predicate places. [2024-01-31 17:22:14,046 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 1869 flow [2024-01-31 17:22:14,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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 17:22:14,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:14,047 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 17:22:14,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:14,263 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1169839175, now seen corresponding path program 19 times [2024-01-31 17:22:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049392838] [2024-01-31 17:22:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:14,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049392838] [2024-01-31 17:22:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049392838] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:14,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813228433] [2024-01-31 17:22:14,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:22:14,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:14,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:14,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-01-31 17:22:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:14,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:14,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:14,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813228433] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:14,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-01-31 17:22:14,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383678486] [2024-01-31 17:22:14,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:22:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:22:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:22:14,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:14,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 1869 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 17:22:14,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:14,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:14,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:15,166 INFO L124 PetriNetUnfolderBase]: 764/1547 cut-off events. [2024-01-31 17:22:15,166 INFO L125 PetriNetUnfolderBase]: For 10904/10904 co-relation queries the response was YES. [2024-01-31 17:22:15,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7981 conditions, 1547 events. 764/1547 cut-off events. For 10904/10904 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9363 event pairs, 161 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 7863. Up to 917 conditions per place. [2024-01-31 17:22:15,175 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 113 selfloop transitions, 87 changer transitions 13/214 dead transitions. [2024-01-31 17:22:15,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 214 transitions, 3455 flow [2024-01-31 17:22:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 17:22:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 17:22:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 140 transitions. [2024-01-31 17:22:15,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2024-01-31 17:22:15,176 INFO L175 Difference]: Start difference. First operand has 153 places, 122 transitions, 1869 flow. Second operand 16 states and 140 transitions. [2024-01-31 17:22:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 214 transitions, 3455 flow [2024-01-31 17:22:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 214 transitions, 3114 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-01-31 17:22:15,206 INFO L231 Difference]: Finished difference. Result has 155 places, 158 transitions, 2546 flow [2024-01-31 17:22:15,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2546, PETRI_PLACES=155, PETRI_TRANSITIONS=158} [2024-01-31 17:22:15,207 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 130 predicate places. [2024-01-31 17:22:15,207 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 158 transitions, 2546 flow [2024-01-31 17:22:15,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 17:22:15,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:15,207 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 17:22:15,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:15,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-01-31 17:22:15,408 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:15,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash -931000647, now seen corresponding path program 20 times [2024-01-31 17:22:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379930916] [2024-01-31 17:22:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379930916] [2024-01-31 17:22:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379930916] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160577059] [2024-01-31 17:22:15,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:15,513 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-01-31 17:22:15,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:15,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:15,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:15,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:15,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160577059] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:15,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-01-31 17:22:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10395372] [2024-01-31 17:22:15,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:22:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:22:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:22:15,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:15,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 158 transitions, 2546 flow. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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 17:22:15,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:15,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:15,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:16,529 INFO L124 PetriNetUnfolderBase]: 840/1794 cut-off events. [2024-01-31 17:22:16,529 INFO L125 PetriNetUnfolderBase]: For 10593/10593 co-relation queries the response was YES. [2024-01-31 17:22:16,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8541 conditions, 1794 events. 840/1794 cut-off events. For 10593/10593 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11682 event pairs, 175 based on Foata normal form. 14/1808 useless extension candidates. Maximal degree in co-relation 8417. Up to 887 conditions per place. [2024-01-31 17:22:16,540 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 100 selfloop transitions, 57 changer transitions 66/224 dead transitions. [2024-01-31 17:22:16,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 224 transitions, 3386 flow [2024-01-31 17:22:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-31 17:22:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-31 17:22:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 166 transitions. [2024-01-31 17:22:16,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36086956521739133 [2024-01-31 17:22:16,541 INFO L175 Difference]: Start difference. First operand has 155 places, 158 transitions, 2546 flow. Second operand 20 states and 166 transitions. [2024-01-31 17:22:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 224 transitions, 3386 flow [2024-01-31 17:22:16,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 224 transitions, 3333 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-31 17:22:16,575 INFO L231 Difference]: Finished difference. Result has 171 places, 126 transitions, 1989 flow [2024-01-31 17:22:16,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1989, PETRI_PLACES=171, PETRI_TRANSITIONS=126} [2024-01-31 17:22:16,575 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 146 predicate places. [2024-01-31 17:22:16,575 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 126 transitions, 1989 flow [2024-01-31 17:22:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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 17:22:16,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:16,576 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 17:22:16,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-01-31 17:22:16,776 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:16,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1785429861, now seen corresponding path program 21 times [2024-01-31 17:22:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60927196] [2024-01-31 17:22:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60927196] [2024-01-31 17:22:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60927196] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545545407] [2024-01-31 17:22:16,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:16,897 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-01-31 17:22:16,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:22:16,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:16,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:16,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:17,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545545407] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:17,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:17,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-01-31 17:22:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461576201] [2024-01-31 17:22:17,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:17,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:22:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:22:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:22:17,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:17,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 126 transitions, 1989 flow. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 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 17:22:17,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:17,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:17,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:18,292 INFO L124 PetriNetUnfolderBase]: 895/1879 cut-off events. [2024-01-31 17:22:18,293 INFO L125 PetriNetUnfolderBase]: For 14506/14506 co-relation queries the response was YES. [2024-01-31 17:22:18,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9802 conditions, 1879 events. 895/1879 cut-off events. For 14506/14506 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12102 event pairs, 157 based on Foata normal form. 14/1893 useless extension candidates. Maximal degree in co-relation 9623. Up to 939 conditions per place. [2024-01-31 17:22:18,305 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 146 selfloop transitions, 112 changer transitions 25/284 dead transitions. [2024-01-31 17:22:18,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 284 transitions, 4354 flow [2024-01-31 17:22:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-01-31 17:22:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-01-31 17:22:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 282 transitions. [2024-01-31 17:22:18,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32265446224256294 [2024-01-31 17:22:18,307 INFO L175 Difference]: Start difference. First operand has 171 places, 126 transitions, 1989 flow. Second operand 38 states and 282 transitions. [2024-01-31 17:22:18,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 284 transitions, 4354 flow [2024-01-31 17:22:18,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 284 transitions, 4111 flow, removed 43 selfloop flow, removed 17 redundant places. [2024-01-31 17:22:18,368 INFO L231 Difference]: Finished difference. Result has 195 places, 181 transitions, 3132 flow [2024-01-31 17:22:18,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3132, PETRI_PLACES=195, PETRI_TRANSITIONS=181} [2024-01-31 17:22:18,369 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 170 predicate places. [2024-01-31 17:22:18,369 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 181 transitions, 3132 flow [2024-01-31 17:22:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 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 17:22:18,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:18,369 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 17:22:18,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:18,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:18,584 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:18,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1777808957, now seen corresponding path program 22 times [2024-01-31 17:22:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526909229] [2024-01-31 17:22:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:18,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526909229] [2024-01-31 17:22:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526909229] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128768111] [2024-01-31 17:22:18,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:18,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:18,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:18,708 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:18,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-01-31 17:22:18,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:18,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:18,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:18,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:18,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128768111] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:19,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144716071] [2024-01-31 17:22:19,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:19,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:19,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:19,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 181 transitions, 3132 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:19,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:19,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:19,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:19,512 INFO L124 PetriNetUnfolderBase]: 964/1999 cut-off events. [2024-01-31 17:22:19,512 INFO L125 PetriNetUnfolderBase]: For 14405/14405 co-relation queries the response was YES. [2024-01-31 17:22:19,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10508 conditions, 1999 events. 964/1999 cut-off events. For 14405/14405 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12871 event pairs, 253 based on Foata normal form. 8/2007 useless extension candidates. Maximal degree in co-relation 10363. Up to 1243 conditions per place. [2024-01-31 17:22:19,524 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 124 selfloop transitions, 55 changer transitions 51/231 dead transitions. [2024-01-31 17:22:19,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 231 transitions, 4065 flow [2024-01-31 17:22:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:22:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:22:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 109 transitions. [2024-01-31 17:22:19,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385093167701863 [2024-01-31 17:22:19,525 INFO L175 Difference]: Start difference. First operand has 195 places, 181 transitions, 3132 flow. Second operand 14 states and 109 transitions. [2024-01-31 17:22:19,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 231 transitions, 4065 flow [2024-01-31 17:22:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 231 transitions, 3933 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-01-31 17:22:19,565 INFO L231 Difference]: Finished difference. Result has 201 places, 168 transitions, 2920 flow [2024-01-31 17:22:19,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2920, PETRI_PLACES=201, PETRI_TRANSITIONS=168} [2024-01-31 17:22:19,565 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 176 predicate places. [2024-01-31 17:22:19,565 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 168 transitions, 2920 flow [2024-01-31 17:22:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:19,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:19,566 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 17:22:19,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-01-31 17:22:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:19,766 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:19,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1873366595, now seen corresponding path program 23 times [2024-01-31 17:22:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709095445] [2024-01-31 17:22:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:19,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709095445] [2024-01-31 17:22:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709095445] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065170361] [2024-01-31 17:22:19,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:22:19,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:19,896 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:19,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-01-31 17:22:19,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:22:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:19,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:22:19,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:20,038 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 17:22:20,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:22:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065170361] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:20,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:22:20,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-01-31 17:22:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507771438] [2024-01-31 17:22:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:20,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:22:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:22:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-01-31 17:22:20,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:20,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 168 transitions, 2920 flow. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:22:20,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:20,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:20,243 INFO L124 PetriNetUnfolderBase]: 744/1574 cut-off events. [2024-01-31 17:22:20,244 INFO L125 PetriNetUnfolderBase]: For 12775/12775 co-relation queries the response was YES. [2024-01-31 17:22:20,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8487 conditions, 1574 events. 744/1574 cut-off events. For 12775/12775 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9741 event pairs, 240 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 8345. Up to 1191 conditions per place. [2024-01-31 17:22:20,252 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 103 selfloop transitions, 61 changer transitions 23/188 dead transitions. [2024-01-31 17:22:20,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 188 transitions, 3416 flow [2024-01-31 17:22:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:22:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:22:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-01-31 17:22:20,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864734299516908 [2024-01-31 17:22:20,253 INFO L175 Difference]: Start difference. First operand has 201 places, 168 transitions, 2920 flow. Second operand 9 states and 80 transitions. [2024-01-31 17:22:20,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 188 transitions, 3416 flow [2024-01-31 17:22:20,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 188 transitions, 3254 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-01-31 17:22:20,288 INFO L231 Difference]: Finished difference. Result has 193 places, 157 transitions, 2701 flow [2024-01-31 17:22:20,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2701, PETRI_PLACES=193, PETRI_TRANSITIONS=157} [2024-01-31 17:22:20,288 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 168 predicate places. [2024-01-31 17:22:20,289 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 157 transitions, 2701 flow [2024-01-31 17:22:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 17:22:20,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:20,289 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 17:22:20,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-01-31 17:22:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:20,489 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash -449111537, now seen corresponding path program 24 times [2024-01-31 17:22:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660972015] [2024-01-31 17:22:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660972015] [2024-01-31 17:22:20,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660972015] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348223594] [2024-01-31 17:22:20,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:22:20,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:20,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:20,584 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-01-31 17:22:20,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-31 17:22:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:20,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:20,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:20,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348223594] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:20,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546078766] [2024-01-31 17:22:20,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:20,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:20,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:20,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:20,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 157 transitions, 2701 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:20,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:20,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:20,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:21,312 INFO L124 PetriNetUnfolderBase]: 692/1446 cut-off events. [2024-01-31 17:22:21,312 INFO L125 PetriNetUnfolderBase]: For 10971/10971 co-relation queries the response was YES. [2024-01-31 17:22:21,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 1446 events. 692/1446 cut-off events. For 10971/10971 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8721 event pairs, 109 based on Foata normal form. 7/1453 useless extension candidates. Maximal degree in co-relation 7571. Up to 637 conditions per place. [2024-01-31 17:22:21,320 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 98 selfloop transitions, 65 changer transitions 41/205 dead transitions. [2024-01-31 17:22:21,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 205 transitions, 3385 flow [2024-01-31 17:22:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:22:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:22:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 122 transitions. [2024-01-31 17:22:21,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536231884057971 [2024-01-31 17:22:21,321 INFO L175 Difference]: Start difference. First operand has 193 places, 157 transitions, 2701 flow. Second operand 15 states and 122 transitions. [2024-01-31 17:22:21,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 205 transitions, 3385 flow [2024-01-31 17:22:21,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 205 transitions, 3146 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-01-31 17:22:21,379 INFO L231 Difference]: Finished difference. Result has 195 places, 137 transitions, 2250 flow [2024-01-31 17:22:21,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2250, PETRI_PLACES=195, PETRI_TRANSITIONS=137} [2024-01-31 17:22:21,380 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 170 predicate places. [2024-01-31 17:22:21,380 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 137 transitions, 2250 flow [2024-01-31 17:22:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:21,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:21,381 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 17:22:21,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-01-31 17:22:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-01-31 17:22:21,584 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:21,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1241595167, now seen corresponding path program 25 times [2024-01-31 17:22:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313878556] [2024-01-31 17:22:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313878556] [2024-01-31 17:22:21,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313878556] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497989596] [2024-01-31 17:22:21,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:22:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:21,677 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:21,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-01-31 17:22:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:21,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:21,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:21,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497989596] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:22,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570291607] [2024-01-31 17:22:22,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:22,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:22,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:22,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 137 transitions, 2250 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:22,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:22,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:22,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:22,431 INFO L124 PetriNetUnfolderBase]: 532/1132 cut-off events. [2024-01-31 17:22:22,431 INFO L125 PetriNetUnfolderBase]: For 9273/9273 co-relation queries the response was YES. [2024-01-31 17:22:22,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 1132 events. 532/1132 cut-off events. For 9273/9273 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6426 event pairs, 57 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 5991. Up to 429 conditions per place. [2024-01-31 17:22:22,439 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 76 selfloop transitions, 73 changer transitions 19/169 dead transitions. [2024-01-31 17:22:22,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 169 transitions, 2787 flow [2024-01-31 17:22:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:22:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:22:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 114 transitions. [2024-01-31 17:22:22,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33043478260869563 [2024-01-31 17:22:22,440 INFO L175 Difference]: Start difference. First operand has 195 places, 137 transitions, 2250 flow. Second operand 15 states and 114 transitions. [2024-01-31 17:22:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 169 transitions, 2787 flow [2024-01-31 17:22:22,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 169 transitions, 2383 flow, removed 26 selfloop flow, removed 20 redundant places. [2024-01-31 17:22:22,469 INFO L231 Difference]: Finished difference. Result has 188 places, 134 transitions, 1978 flow [2024-01-31 17:22:22,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1978, PETRI_PLACES=188, PETRI_TRANSITIONS=134} [2024-01-31 17:22:22,469 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 163 predicate places. [2024-01-31 17:22:22,469 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 134 transitions, 1978 flow [2024-01-31 17:22:22,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:22,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:22,470 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 17:22:22,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-01-31 17:22:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-01-31 17:22:22,670 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:22,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2046414415, now seen corresponding path program 26 times [2024-01-31 17:22:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553451440] [2024-01-31 17:22:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553451440] [2024-01-31 17:22:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553451440] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811047114] [2024-01-31 17:22:22,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:22,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:22,773 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:22,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-01-31 17:22:22,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:22,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:22,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:22,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:22,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811047114] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:23,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635403144] [2024-01-31 17:22:23,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:23,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:23,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 134 transitions, 1978 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:23,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:23,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:23,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:23,861 INFO L124 PetriNetUnfolderBase]: 567/1267 cut-off events. [2024-01-31 17:22:23,861 INFO L125 PetriNetUnfolderBase]: For 7390/7390 co-relation queries the response was YES. [2024-01-31 17:22:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5881 conditions, 1267 events. 567/1267 cut-off events. For 7390/7390 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7815 event pairs, 47 based on Foata normal form. 10/1277 useless extension candidates. Maximal degree in co-relation 5773. Up to 260 conditions per place. [2024-01-31 17:22:23,869 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 98 selfloop transitions, 65 changer transitions 67/231 dead transitions. [2024-01-31 17:22:23,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 231 transitions, 3016 flow [2024-01-31 17:22:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-01-31 17:22:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-01-31 17:22:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 222 transitions. [2024-01-31 17:22:23,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328335832083958 [2024-01-31 17:22:23,870 INFO L175 Difference]: Start difference. First operand has 188 places, 134 transitions, 1978 flow. Second operand 29 states and 222 transitions. [2024-01-31 17:22:23,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 231 transitions, 3016 flow [2024-01-31 17:22:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 231 transitions, 2839 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-31 17:22:23,894 INFO L231 Difference]: Finished difference. Result has 202 places, 112 transitions, 1751 flow [2024-01-31 17:22:23,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1751, PETRI_PLACES=202, PETRI_TRANSITIONS=112} [2024-01-31 17:22:23,894 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 177 predicate places. [2024-01-31 17:22:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 112 transitions, 1751 flow [2024-01-31 17:22:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 17:22:23,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:23,895 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 17:22:23,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-01-31 17:22:24,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:24,095 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:24,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -440241743, now seen corresponding path program 27 times [2024-01-31 17:22:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321325287] [2024-01-31 17:22:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321325287] [2024-01-31 17:22:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321325287] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:24,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674397350] [2024-01-31 17:22:24,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:24,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:24,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:24,208 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:24,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-01-31 17:22:24,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 17:22:24,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:24,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:24,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:24,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674397350] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:24,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-01-31 17:22:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851131421] [2024-01-31 17:22:24,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:22:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:22:24,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:22:24,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:24,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 112 transitions, 1751 flow. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 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 17:22:24,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:24,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:24,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:24,981 INFO L124 PetriNetUnfolderBase]: 301/711 cut-off events. [2024-01-31 17:22:24,981 INFO L125 PetriNetUnfolderBase]: For 4690/4690 co-relation queries the response was YES. [2024-01-31 17:22:24,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 711 events. 301/711 cut-off events. For 4690/4690 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3894 event pairs, 23 based on Foata normal form. 4/715 useless extension candidates. Maximal degree in co-relation 3562. Up to 303 conditions per place. [2024-01-31 17:22:24,986 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 71 selfloop transitions, 55 changer transitions 15/142 dead transitions. [2024-01-31 17:22:24,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 142 transitions, 2110 flow [2024-01-31 17:22:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 17:22:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 17:22:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 139 transitions. [2024-01-31 17:22:24,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3357487922705314 [2024-01-31 17:22:24,987 INFO L175 Difference]: Start difference. First operand has 202 places, 112 transitions, 1751 flow. Second operand 18 states and 139 transitions. [2024-01-31 17:22:24,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 142 transitions, 2110 flow [2024-01-31 17:22:25,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 142 transitions, 1946 flow, removed 19 selfloop flow, removed 27 redundant places. [2024-01-31 17:22:25,004 INFO L231 Difference]: Finished difference. Result has 169 places, 101 transitions, 1547 flow [2024-01-31 17:22:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1547, PETRI_PLACES=169, PETRI_TRANSITIONS=101} [2024-01-31 17:22:25,005 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 144 predicate places. [2024-01-31 17:22:25,005 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 101 transitions, 1547 flow [2024-01-31 17:22:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 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 17:22:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:25,005 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 17:22:25,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-01-31 17:22:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:25,206 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1143664241, now seen corresponding path program 28 times [2024-01-31 17:22:25,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:25,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135935310] [2024-01-31 17:22:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135935310] [2024-01-31 17:22:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135935310] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612775683] [2024-01-31 17:22:25,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:25,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:25,333 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:25,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-01-31 17:22:25,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:25,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:25,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:22:25,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:25,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612775683] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:25,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-01-31 17:22:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308627896] [2024-01-31 17:22:25,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:22:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:22:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-01-31 17:22:25,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:25,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 101 transitions, 1547 flow. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:22:25,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:25,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:26,058 INFO L124 PetriNetUnfolderBase]: 269/627 cut-off events. [2024-01-31 17:22:26,058 INFO L125 PetriNetUnfolderBase]: For 4263/4263 co-relation queries the response was YES. [2024-01-31 17:22:26,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 627 events. 269/627 cut-off events. For 4263/4263 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3295 event pairs, 13 based on Foata normal form. 5/632 useless extension candidates. Maximal degree in co-relation 3219. Up to 164 conditions per place. [2024-01-31 17:22:26,062 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 54 selfloop transitions, 43 changer transitions 32/130 dead transitions. [2024-01-31 17:22:26,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 130 transitions, 1898 flow [2024-01-31 17:22:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:22:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:22:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-01-31 17:22:26,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33540372670807456 [2024-01-31 17:22:26,063 INFO L175 Difference]: Start difference. First operand has 169 places, 101 transitions, 1547 flow. Second operand 14 states and 108 transitions. [2024-01-31 17:22:26,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 130 transitions, 1898 flow [2024-01-31 17:22:26,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 130 transitions, 1794 flow, removed 6 selfloop flow, removed 16 redundant places. [2024-01-31 17:22:26,075 INFO L231 Difference]: Finished difference. Result has 165 places, 79 transitions, 1162 flow [2024-01-31 17:22:26,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1162, PETRI_PLACES=165, PETRI_TRANSITIONS=79} [2024-01-31 17:22:26,075 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 140 predicate places. [2024-01-31 17:22:26,076 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 79 transitions, 1162 flow [2024-01-31 17:22:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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 17:22:26,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:26,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:26,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-01-31 17:22:26,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:26,279 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:26,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1934635885, now seen corresponding path program 29 times [2024-01-31 17:22:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576800238] [2024-01-31 17:22:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576800238] [2024-01-31 17:22:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576800238] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098213445] [2024-01-31 17:22:26,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:22:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:26,325 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:26,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-01-31 17:22:26,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:26,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:26,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:22:26,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:26,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098213445] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:26,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-01-31 17:22:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215875831] [2024-01-31 17:22:26,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:26,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 17:22:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 17:22:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-31 17:22:26,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:22:26,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 79 transitions, 1162 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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 17:22:26,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:26,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:22:26,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:26,670 INFO L124 PetriNetUnfolderBase]: 137/341 cut-off events. [2024-01-31 17:22:26,670 INFO L125 PetriNetUnfolderBase]: For 2865/2865 co-relation queries the response was YES. [2024-01-31 17:22:26,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 341 events. 137/341 cut-off events. For 2865/2865 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1494 event pairs, 42 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 1861. Up to 118 conditions per place. [2024-01-31 17:22:26,673 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 49 selfloop transitions, 28 changer transitions 2/94 dead transitions. [2024-01-31 17:22:26,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 94 transitions, 1352 flow [2024-01-31 17:22:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:22:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:22:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-01-31 17:22:26,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-01-31 17:22:26,674 INFO L175 Difference]: Start difference. First operand has 165 places, 79 transitions, 1162 flow. Second operand 9 states and 90 transitions. [2024-01-31 17:22:26,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 94 transitions, 1352 flow [2024-01-31 17:22:26,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 94 transitions, 1168 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-01-31 17:22:26,685 INFO L231 Difference]: Finished difference. Result has 133 places, 77 transitions, 1009 flow [2024-01-31 17:22:26,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1009, PETRI_PLACES=133, PETRI_TRANSITIONS=77} [2024-01-31 17:22:26,686 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 108 predicate places. [2024-01-31 17:22:26,686 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 77 transitions, 1009 flow [2024-01-31 17:22:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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 17:22:26,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:26,686 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:26,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:26,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-01-31 17:22:26,900 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:26,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash 816817318, now seen corresponding path program 30 times [2024-01-31 17:22:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892851600] [2024-01-31 17:22:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:26,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892851600] [2024-01-31 17:22:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892851600] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852042003] [2024-01-31 17:22:26,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:22:26,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:26,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:26,941 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:26,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-01-31 17:22:27,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:22:27,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:27,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:22:27,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:27,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852042003] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:27,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-01-31 17:22:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606893779] [2024-01-31 17:22:27,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:27,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 17:22:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 17:22:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-31 17:22:27,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-01-31 17:22:27,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 77 transitions, 1009 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 17:22:27,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:27,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-01-31 17:22:27,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:27,215 INFO L124 PetriNetUnfolderBase]: 126/311 cut-off events. [2024-01-31 17:22:27,215 INFO L125 PetriNetUnfolderBase]: For 2435/2435 co-relation queries the response was YES. [2024-01-31 17:22:27,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 311 events. 126/311 cut-off events. For 2435/2435 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1265 event pairs, 51 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1594. Up to 128 conditions per place. [2024-01-31 17:22:27,217 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 54 selfloop transitions, 10 changer transitions 6/83 dead transitions. [2024-01-31 17:22:27,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 83 transitions, 1152 flow [2024-01-31 17:22:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:22:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:22:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-01-31 17:22:27,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40217391304347827 [2024-01-31 17:22:27,218 INFO L175 Difference]: Start difference. First operand has 133 places, 77 transitions, 1009 flow. Second operand 8 states and 74 transitions. [2024-01-31 17:22:27,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 83 transitions, 1152 flow [2024-01-31 17:22:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 83 transitions, 1091 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-01-31 17:22:27,225 INFO L231 Difference]: Finished difference. Result has 131 places, 72 transitions, 897 flow [2024-01-31 17:22:27,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=131, PETRI_TRANSITIONS=72} [2024-01-31 17:22:27,225 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 106 predicate places. [2024-01-31 17:22:27,225 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 72 transitions, 897 flow [2024-01-31 17:22:27,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 17:22:27,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:27,226 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] [2024-01-31 17:22:27,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-01-31 17:22:27,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-01-31 17:22:27,427 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:27,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 499761754, now seen corresponding path program 31 times [2024-01-31 17:22:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434684787] [2024-01-31 17:22:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434684787] [2024-01-31 17:22:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434684787] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116824960] [2024-01-31 17:22:27,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:22:27,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:27,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:27,601 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:27,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-01-31 17:22:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:27,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:27,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:27,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116824960] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:28,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-01-31 17:22:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178573381] [2024-01-31 17:22:28,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:28,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-01-31 17:22:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-01-31 17:22:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2024-01-31 17:22:28,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:28,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 72 transitions, 897 flow. Second operand has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 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 17:22:28,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:28,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:28,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:28,517 INFO L124 PetriNetUnfolderBase]: 191/432 cut-off events. [2024-01-31 17:22:28,517 INFO L125 PetriNetUnfolderBase]: For 2926/2926 co-relation queries the response was YES. [2024-01-31 17:22:28,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 432 events. 191/432 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1866 event pairs, 40 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2061. Up to 163 conditions per place. [2024-01-31 17:22:28,520 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 60 selfloop transitions, 42 changer transitions 17/120 dead transitions. [2024-01-31 17:22:28,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 120 transitions, 1425 flow [2024-01-31 17:22:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-31 17:22:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-31 17:22:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 140 transitions. [2024-01-31 17:22:28,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32036613272311215 [2024-01-31 17:22:28,529 INFO L175 Difference]: Start difference. First operand has 131 places, 72 transitions, 897 flow. Second operand 19 states and 140 transitions. [2024-01-31 17:22:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 120 transitions, 1425 flow [2024-01-31 17:22:28,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 120 transitions, 1399 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 17:22:28,539 INFO L231 Difference]: Finished difference. Result has 146 places, 78 transitions, 1075 flow [2024-01-31 17:22:28,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1075, PETRI_PLACES=146, PETRI_TRANSITIONS=78} [2024-01-31 17:22:28,540 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 121 predicate places. [2024-01-31 17:22:28,541 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 78 transitions, 1075 flow [2024-01-31 17:22:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 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 17:22:28,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:28,541 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] [2024-01-31 17:22:28,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:28,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:28,757 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:28,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1316835722, now seen corresponding path program 32 times [2024-01-31 17:22:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520535623] [2024-01-31 17:22:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520535623] [2024-01-31 17:22:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520535623] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213530413] [2024-01-31 17:22:28,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:28,887 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:28,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-01-31 17:22:28,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:28,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:28,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:28,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:29,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:29,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213530413] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:29,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:29,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-01-31 17:22:29,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112328691] [2024-01-31 17:22:29,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:29,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-01-31 17:22:29,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:29,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-01-31 17:22:29,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-01-31 17:22:29,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:29,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 78 transitions, 1075 flow. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 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 17:22:29,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:29,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:29,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:29,651 INFO L124 PetriNetUnfolderBase]: 195/438 cut-off events. [2024-01-31 17:22:29,652 INFO L125 PetriNetUnfolderBase]: For 3559/3559 co-relation queries the response was YES. [2024-01-31 17:22:29,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 438 events. 195/438 cut-off events. For 3559/3559 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1912 event pairs, 40 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2281. Up to 169 conditions per place. [2024-01-31 17:22:29,654 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 55 selfloop transitions, 41 changer transitions 17/114 dead transitions. [2024-01-31 17:22:29,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 114 transitions, 1536 flow [2024-01-31 17:22:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:22:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:22:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 114 transitions. [2024-01-31 17:22:29,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33043478260869563 [2024-01-31 17:22:29,655 INFO L175 Difference]: Start difference. First operand has 146 places, 78 transitions, 1075 flow. Second operand 15 states and 114 transitions. [2024-01-31 17:22:29,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 114 transitions, 1536 flow [2024-01-31 17:22:29,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 114 transitions, 1378 flow, removed 34 selfloop flow, removed 14 redundant places. [2024-01-31 17:22:29,663 INFO L231 Difference]: Finished difference. Result has 144 places, 78 transitions, 1037 flow [2024-01-31 17:22:29,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1037, PETRI_PLACES=144, PETRI_TRANSITIONS=78} [2024-01-31 17:22:29,663 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 119 predicate places. [2024-01-31 17:22:29,664 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 78 transitions, 1037 flow [2024-01-31 17:22:29,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 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 17:22:29,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:29,664 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] [2024-01-31 17:22:29,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-01-31 17:22:29,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-01-31 17:22:29,869 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:29,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1684529312, now seen corresponding path program 33 times [2024-01-31 17:22:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942716109] [2024-01-31 17:22:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:29,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:29,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942716109] [2024-01-31 17:22:29,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942716109] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:29,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564738983] [2024-01-31 17:22:29,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:29,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:29,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:29,982 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:29,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-01-31 17:22:30,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:22:30,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:30,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:22:30,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:30,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:30,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564738983] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:30,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:30,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 27 [2024-01-31 17:22:30,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387710085] [2024-01-31 17:22:30,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:30,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-01-31 17:22:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-01-31 17:22:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-01-31 17:22:30,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:30,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 78 transitions, 1037 flow. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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 17:22:30,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:30,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:30,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:30,954 INFO L124 PetriNetUnfolderBase]: 211/476 cut-off events. [2024-01-31 17:22:30,955 INFO L125 PetriNetUnfolderBase]: For 4157/4157 co-relation queries the response was YES. [2024-01-31 17:22:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 476 events. 211/476 cut-off events. For 4157/4157 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2162 event pairs, 44 based on Foata normal form. 9/485 useless extension candidates. Maximal degree in co-relation 2344. Up to 169 conditions per place. [2024-01-31 17:22:30,958 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 62 selfloop transitions, 46 changer transitions 32/141 dead transitions. [2024-01-31 17:22:30,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1630 flow [2024-01-31 17:22:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 17:22:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 17:22:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 176 transitions. [2024-01-31 17:22:30,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3188405797101449 [2024-01-31 17:22:30,959 INFO L175 Difference]: Start difference. First operand has 144 places, 78 transitions, 1037 flow. Second operand 24 states and 176 transitions. [2024-01-31 17:22:30,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1630 flow [2024-01-31 17:22:30,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 141 transitions, 1563 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-01-31 17:22:30,968 INFO L231 Difference]: Finished difference. Result has 153 places, 83 transitions, 1144 flow [2024-01-31 17:22:30,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1144, PETRI_PLACES=153, PETRI_TRANSITIONS=83} [2024-01-31 17:22:30,969 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 128 predicate places. [2024-01-31 17:22:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 83 transitions, 1144 flow [2024-01-31 17:22:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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 17:22:30,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:30,969 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] [2024-01-31 17:22:30,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-01-31 17:22:31,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:31,170 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 729090400, now seen corresponding path program 34 times [2024-01-31 17:22:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019520172] [2024-01-31 17:22:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:31,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019520172] [2024-01-31 17:22:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019520172] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996280420] [2024-01-31 17:22:31,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:31,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:31,300 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:31,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-01-31 17:22:31,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:31,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:31,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:31,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:31,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996280420] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:31,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:31,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-01-31 17:22:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445296336] [2024-01-31 17:22:31,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-01-31 17:22:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-01-31 17:22:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2024-01-31 17:22:31,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:31,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 83 transitions, 1144 flow. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 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 17:22:31,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:31,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:32,142 INFO L124 PetriNetUnfolderBase]: 201/463 cut-off events. [2024-01-31 17:22:32,142 INFO L125 PetriNetUnfolderBase]: For 3341/3341 co-relation queries the response was YES. [2024-01-31 17:22:32,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 463 events. 201/463 cut-off events. For 3341/3341 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2074 event pairs, 46 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2279. Up to 157 conditions per place. [2024-01-31 17:22:32,145 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 65 selfloop transitions, 37 changer transitions 19/122 dead transitions. [2024-01-31 17:22:32,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 122 transitions, 1533 flow [2024-01-31 17:22:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 17:22:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 17:22:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-01-31 17:22:32,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33967391304347827 [2024-01-31 17:22:32,146 INFO L175 Difference]: Start difference. First operand has 153 places, 83 transitions, 1144 flow. Second operand 16 states and 125 transitions. [2024-01-31 17:22:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 122 transitions, 1533 flow [2024-01-31 17:22:32,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 122 transitions, 1398 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-01-31 17:22:32,155 INFO L231 Difference]: Finished difference. Result has 150 places, 75 transitions, 963 flow [2024-01-31 17:22:32,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=963, PETRI_PLACES=150, PETRI_TRANSITIONS=75} [2024-01-31 17:22:32,156 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 125 predicate places. [2024-01-31 17:22:32,156 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 75 transitions, 963 flow [2024-01-31 17:22:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 states have internal predecessors, (119), 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 17:22:32,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:32,157 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] [2024-01-31 17:22:32,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-01-31 17:22:32,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-01-31 17:22:32,358 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:32,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -178858562, now seen corresponding path program 35 times [2024-01-31 17:22:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995390021] [2024-01-31 17:22:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995390021] [2024-01-31 17:22:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995390021] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016616818] [2024-01-31 17:22:32,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:22:32,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:32,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:32,486 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:32,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-01-31 17:22:32,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:22:32,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:32,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-31 17:22:32,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:22:32,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:22:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016616818] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:32,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 21 [2024-01-31 17:22:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902184164] [2024-01-31 17:22:32,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:22:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:22:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:22:32,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:32,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 75 transitions, 963 flow. Second operand has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 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 17:22:32,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:32,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:32,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:32,998 INFO L124 PetriNetUnfolderBase]: 169/381 cut-off events. [2024-01-31 17:22:32,998 INFO L125 PetriNetUnfolderBase]: For 2861/2861 co-relation queries the response was YES. [2024-01-31 17:22:33,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 381 events. 169/381 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1545 event pairs, 5 based on Foata normal form. 2/383 useless extension candidates. Maximal degree in co-relation 1881. Up to 82 conditions per place. [2024-01-31 17:22:33,002 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 37 selfloop transitions, 30 changer transitions 32/100 dead transitions. [2024-01-31 17:22:33,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 100 transitions, 1219 flow [2024-01-31 17:22:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:22:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:22:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 102 transitions. [2024-01-31 17:22:33,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3167701863354037 [2024-01-31 17:22:33,003 INFO L175 Difference]: Start difference. First operand has 150 places, 75 transitions, 963 flow. Second operand 14 states and 102 transitions. [2024-01-31 17:22:33,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 100 transitions, 1219 flow [2024-01-31 17:22:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 100 transitions, 1153 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-01-31 17:22:33,010 INFO L231 Difference]: Finished difference. Result has 143 places, 57 transitions, 748 flow [2024-01-31 17:22:33,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=748, PETRI_PLACES=143, PETRI_TRANSITIONS=57} [2024-01-31 17:22:33,010 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 118 predicate places. [2024-01-31 17:22:33,011 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 57 transitions, 748 flow [2024-01-31 17:22:33,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 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 17:22:33,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:33,011 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] [2024-01-31 17:22:33,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-01-31 17:22:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:33,212 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:33,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2060206146, now seen corresponding path program 36 times [2024-01-31 17:22:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637495553] [2024-01-31 17:22:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637495553] [2024-01-31 17:22:33,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637495553] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705908051] [2024-01-31 17:22:33,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:22:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:33,341 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-01-31 17:22:33,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:22:33,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:33,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:33,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:33,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:33,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705908051] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:33,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:33,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 28 [2024-01-31 17:22:33,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303308779] [2024-01-31 17:22:33,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-31 17:22:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-31 17:22:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-01-31 17:22:33,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:33,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 57 transitions, 748 flow. Second operand has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 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 17:22:33,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:33,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:33,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:34,334 INFO L124 PetriNetUnfolderBase]: 105/239 cut-off events. [2024-01-31 17:22:34,334 INFO L125 PetriNetUnfolderBase]: For 2171/2171 co-relation queries the response was YES. [2024-01-31 17:22:34,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 239 events. 105/239 cut-off events. For 2171/2171 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 802 event pairs, 4 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 1335. Up to 56 conditions per place. [2024-01-31 17:22:34,336 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 33 selfloop transitions, 17 changer transitions 50/101 dead transitions. [2024-01-31 17:22:34,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 101 transitions, 1154 flow [2024-01-31 17:22:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-01-31 17:22:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-01-31 17:22:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 166 transitions. [2024-01-31 17:22:34,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27759197324414714 [2024-01-31 17:22:34,337 INFO L175 Difference]: Start difference. First operand has 143 places, 57 transitions, 748 flow. Second operand 26 states and 166 transitions. [2024-01-31 17:22:34,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 101 transitions, 1154 flow [2024-01-31 17:22:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 101 transitions, 885 flow, removed 26 selfloop flow, removed 31 redundant places. [2024-01-31 17:22:34,343 INFO L231 Difference]: Finished difference. Result has 119 places, 35 transitions, 307 flow [2024-01-31 17:22:34,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=307, PETRI_PLACES=119, PETRI_TRANSITIONS=35} [2024-01-31 17:22:34,344 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2024-01-31 17:22:34,344 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 35 transitions, 307 flow [2024-01-31 17:22:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 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 17:22:34,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:34,344 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] [2024-01-31 17:22:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:34,559 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:34,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1338772568, now seen corresponding path program 37 times [2024-01-31 17:22:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:34,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490612292] [2024-01-31 17:22:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:34,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490612292] [2024-01-31 17:22:34,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490612292] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526927357] [2024-01-31 17:22:34,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:22:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:34,679 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:34,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-01-31 17:22:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:34,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:34,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:34,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526927357] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:35,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-01-31 17:22:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817681674] [2024-01-31 17:22:35,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:35,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-01-31 17:22:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-01-31 17:22:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-01-31 17:22:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:35,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 35 transitions, 307 flow. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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 17:22:35,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:35,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:35,506 INFO L124 PetriNetUnfolderBase]: 77/187 cut-off events. [2024-01-31 17:22:35,507 INFO L125 PetriNetUnfolderBase]: For 641/641 co-relation queries the response was YES. [2024-01-31 17:22:35,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 187 events. 77/187 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 584 event pairs, 0 based on Foata normal form. 1/188 useless extension candidates. Maximal degree in co-relation 799. Up to 44 conditions per place. [2024-01-31 17:22:35,508 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 34 selfloop transitions, 20 changer transitions 18/73 dead transitions. [2024-01-31 17:22:35,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 73 transitions, 649 flow [2024-01-31 17:22:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 17:22:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 17:22:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 116 transitions. [2024-01-31 17:22:35,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2966751918158568 [2024-01-31 17:22:35,510 INFO L175 Difference]: Start difference. First operand has 119 places, 35 transitions, 307 flow. Second operand 17 states and 116 transitions. [2024-01-31 17:22:35,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 73 transitions, 649 flow [2024-01-31 17:22:35,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 527 flow, removed 9 selfloop flow, removed 26 redundant places. [2024-01-31 17:22:35,513 INFO L231 Difference]: Finished difference. Result has 85 places, 35 transitions, 279 flow [2024-01-31 17:22:35,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=279, PETRI_PLACES=85, PETRI_TRANSITIONS=35} [2024-01-31 17:22:35,514 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 60 predicate places. [2024-01-31 17:22:35,514 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 35 transitions, 279 flow [2024-01-31 17:22:35,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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 17:22:35,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:35,514 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] [2024-01-31 17:22:35,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:35,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-01-31 17:22:35,729 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:35,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2016267188, now seen corresponding path program 38 times [2024-01-31 17:22:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7937542] [2024-01-31 17:22:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7937542] [2024-01-31 17:22:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7937542] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602100858] [2024-01-31 17:22:35,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:22:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:35,850 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:35,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-01-31 17:22:35,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:22:35,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:35,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:22:35,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:36,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602100858] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:36,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-01-31 17:22:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149917038] [2024-01-31 17:22:36,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:36,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-01-31 17:22:36,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-01-31 17:22:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-01-31 17:22:36,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:36,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 35 transitions, 279 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 17:22:36,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:36,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:36,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:36,496 INFO L124 PetriNetUnfolderBase]: 67/174 cut-off events. [2024-01-31 17:22:36,496 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-01-31 17:22:36,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 174 events. 67/174 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 560 event pairs, 0 based on Foata normal form. 2/176 useless extension candidates. Maximal degree in co-relation 639. Up to 49 conditions per place. [2024-01-31 17:22:36,497 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 24 selfloop transitions, 13 changer transitions 16/54 dead transitions. [2024-01-31 17:22:36,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 54 transitions, 425 flow [2024-01-31 17:22:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:22:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:22:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 88 transitions. [2024-01-31 17:22:36,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2732919254658385 [2024-01-31 17:22:36,501 INFO L175 Difference]: Start difference. First operand has 85 places, 35 transitions, 279 flow. Second operand 14 states and 88 transitions. [2024-01-31 17:22:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 54 transitions, 425 flow [2024-01-31 17:22:36,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 54 transitions, 359 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-01-31 17:22:36,503 INFO L231 Difference]: Finished difference. Result has 73 places, 28 transitions, 177 flow [2024-01-31 17:22:36,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=177, PETRI_PLACES=73, PETRI_TRANSITIONS=28} [2024-01-31 17:22:36,504 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 48 predicate places. [2024-01-31 17:22:36,504 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 28 transitions, 177 flow [2024-01-31 17:22:36,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 17:22:36,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:36,505 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] [2024-01-31 17:22:36,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-01-31 17:22:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-01-31 17:22:36,712 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:36,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1428521866, now seen corresponding path program 39 times [2024-01-31 17:22:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768049344] [2024-01-31 17:22:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768049344] [2024-01-31 17:22:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768049344] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693835805] [2024-01-31 17:22:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:22:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:36,846 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:36,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-01-31 17:22:36,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:22:36,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:36,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:22:36,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:37,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693835805] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:37,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 27 [2024-01-31 17:22:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976053581] [2024-01-31 17:22:37,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-01-31 17:22:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-01-31 17:22:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-01-31 17:22:37,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:37,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 28 transitions, 177 flow. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 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 17:22:37,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:37,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:37,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:37,824 INFO L124 PetriNetUnfolderBase]: 51/130 cut-off events. [2024-01-31 17:22:37,824 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-01-31 17:22:37,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 130 events. 51/130 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 308 event pairs, 0 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 501. Up to 32 conditions per place. [2024-01-31 17:22:37,825 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 24 selfloop transitions, 12 changer transitions 30/67 dead transitions. [2024-01-31 17:22:37,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 67 transitions, 469 flow [2024-01-31 17:22:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 17:22:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 17:22:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 137 transitions. [2024-01-31 17:22:37,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2589792060491493 [2024-01-31 17:22:37,826 INFO L175 Difference]: Start difference. First operand has 73 places, 28 transitions, 177 flow. Second operand 23 states and 137 transitions. [2024-01-31 17:22:37,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 67 transitions, 469 flow [2024-01-31 17:22:37,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 366 flow, removed 9 selfloop flow, removed 20 redundant places. [2024-01-31 17:22:37,828 INFO L231 Difference]: Finished difference. Result has 76 places, 26 transitions, 136 flow [2024-01-31 17:22:37,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=136, PETRI_PLACES=76, PETRI_TRANSITIONS=26} [2024-01-31 17:22:37,828 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 51 predicate places. [2024-01-31 17:22:37,829 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 26 transitions, 136 flow [2024-01-31 17:22:37,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 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 17:22:37,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:37,829 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:22:37,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:38,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-01-31 17:22:38,030 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:22:38,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1048055773, now seen corresponding path program 40 times [2024-01-31 17:22:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427601116] [2024-01-31 17:22:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:38,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:38,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427601116] [2024-01-31 17:22:38,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427601116] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:22:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272041328] [2024-01-31 17:22:38,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:22:38,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:22:38,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:22:38,164 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:22:38,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-01-31 17:22:38,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:22:38,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:22:38,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2024-01-31 17:22:38,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:22:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:38,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:22:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:22:38,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272041328] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:22:38,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:22:38,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-01-31 17:22:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665218138] [2024-01-31 17:22:38,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:22:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-01-31 17:22:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-01-31 17:22:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2024-01-31 17:22:38,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-01-31 17:22:38,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 26 transitions, 136 flow. Second operand has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 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 17:22:38,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:38,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-01-31 17:22:38,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:22:38,971 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-01-31 17:22:38,971 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-31 17:22:38,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 68 events. 26/68 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 236. Up to 23 conditions per place. [2024-01-31 17:22:38,972 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-01-31 17:22:38,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 37 transitions, 230 flow [2024-01-31 17:22:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 17:22:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 17:22:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 83 transitions. [2024-01-31 17:22:38,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24057971014492754 [2024-01-31 17:22:38,973 INFO L175 Difference]: Start difference. First operand has 76 places, 26 transitions, 136 flow. Second operand 15 states and 83 transitions. [2024-01-31 17:22:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 37 transitions, 230 flow [2024-01-31 17:22:38,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 37 transitions, 194 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-01-31 17:22:38,973 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-01-31 17:22:38,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-01-31 17:22:38,974 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 37 predicate places. [2024-01-31 17:22:38,974 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-01-31 17:22:38,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 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 17:22:38,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-31 17:22:38,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-31 17:22:38,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-31 17:22:38,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-01-31 17:22:39,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-01-31 17:22:39,193 INFO L445 BasicCegarLoop]: Path program histogram: [40, 20, 5, 5] [2024-01-31 17:22:39,196 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:22:39,196 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:22:39,201 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:22:39 BasicIcfg [2024-01-31 17:22:39,201 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:22:39,201 INFO L158 Benchmark]: Toolchain (without parser) took 59291.64ms. Allocated memory was 153.1MB in the beginning and 545.3MB in the end (delta: 392.2MB). Free memory was 80.6MB in the beginning and 462.1MB in the end (delta: -381.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,201 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:22:39,201 INFO L158 Benchmark]: Witness Parser took 0.08ms. Allocated memory is still 153.1MB. Free memory was 84.8MB in the beginning and 84.5MB in the end (delta: 251.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:22:39,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.11ms. Allocated memory is still 153.1MB. Free memory was 80.4MB in the beginning and 68.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.89ms. Allocated memory is still 153.1MB. Free memory was 68.2MB in the beginning and 126.4MB in the end (delta: -58.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,202 INFO L158 Benchmark]: Boogie Preprocessor took 33.46ms. Allocated memory is still 153.1MB. Free memory was 126.4MB in the beginning and 124.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,202 INFO L158 Benchmark]: RCFGBuilder took 386.11ms. Allocated memory is still 153.1MB. Free memory was 124.6MB in the beginning and 102.3MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,202 INFO L158 Benchmark]: TraceAbstraction took 58561.33ms. Allocated memory was 153.1MB in the beginning and 545.3MB in the end (delta: 392.2MB). Free memory was 101.6MB in the beginning and 462.1MB in the end (delta: -360.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-01-31 17:22:39,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.08ms. Allocated memory is still 153.1MB. Free memory was 84.8MB in the beginning and 84.5MB in the end (delta: 251.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.11ms. Allocated memory is still 153.1MB. Free memory was 80.4MB in the beginning and 68.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.89ms. Allocated memory is still 153.1MB. Free memory was 68.2MB in the beginning and 126.4MB in the end (delta: -58.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.46ms. Allocated memory is still 153.1MB. Free memory was 126.4MB in the beginning and 124.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.11ms. Allocated memory is still 153.1MB. Free memory was 124.6MB in the beginning and 102.3MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 58561.33ms. Allocated memory was 153.1MB in the beginning and 545.3MB in the end (delta: 392.2MB). Free memory was 101.6MB in the beginning and 462.1MB in the end (delta: -360.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 58.4s, OverallIterations: 70, TraceHistogramMax: 3, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4089 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4044 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 815 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28103 IncrementalHoareTripleChecker+Invalid, 28918 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 815 mSolverCounterUnsat, 11 mSDtfsCounter, 28103 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2738 GetRequests, 1207 SyntacticMatches, 4 SemanticMatches, 1527 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11911 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3295occurred in iteration=34, InterpolantAutomatonStates: 950, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 2217 NumberOfCodeBlocks, 2217 NumberOfCodeBlocksAsserted, 153 NumberOfCheckSat, 2851 ConstructedInterpolants, 0 QuantifiedInterpolants, 16483 SizeOfPredicates, 149 NumberOfNonLiveVariables, 5235 ConjunctsInSsa, 574 ConjunctsInUnsatCore, 149 InterpolantComputations, 33 PerfectInterpolantSequences, 57/396 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 17:22:39,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE