./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:33:41,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:33:41,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:33:41,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:33:41,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:33:41,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:33:41,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:33:41,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:33:41,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:33:41,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:33:41,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:33:41,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:33:41,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:33:41,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:33:41,194 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:33:41,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:33:41,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:33:41,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:33:41,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:33:41,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:33:41,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:33:41,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:33:41,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:33:41,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:33:41,200 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:33:41,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:33:41,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:33:41,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:33:41,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:33:41,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:33:41,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:33:41,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:33:41,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:41,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:33:41,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:33:41,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:33:41,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:33:41,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:33:41,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:33:41,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:33:41,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:33:41,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:33:41,205 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-11 14:33:41,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:33:41,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:33:41,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:33:41,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:33:41,484 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:33:41,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-11 14:33:42,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:33:43,148 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:33:43,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-11 14:33:43,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1bddd32c/b53a9135fd304c2aa408b5f1127564a3/FLAG323109647 [2024-10-11 14:33:43,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1bddd32c/b53a9135fd304c2aa408b5f1127564a3 [2024-10-11 14:33:43,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:33:43,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:33:43,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:43,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:33:43,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:33:43,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263825ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43, skipping insertion in model container [2024-10-11 14:33:43,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:33:43,417 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-10-11 14:33:43,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:43,446 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:33:43,477 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-10-11 14:33:43,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:43,508 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:33:43,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43 WrapperNode [2024-10-11 14:33:43,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:43,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:43,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:33:43,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:33:43,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,559 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2024-10-11 14:33:43,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:43,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:33:43,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:33:43,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:33:43,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,603 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 14:33:43,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:33:43,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:33:43,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:33:43,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:33:43,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (1/1) ... [2024-10-11 14:33:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:43,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:33:43,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:33:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:33:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:33:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:33:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:33:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:33:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:33:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:33:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:33:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:33:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:33:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:33:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:33:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:33:43,730 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:33:43,864 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:33:43,867 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:33:44,129 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:33:44,130 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:33:44,426 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:33:44,427 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 14:33:44,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:44 BoogieIcfgContainer [2024-10-11 14:33:44,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:33:44,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:33:44,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:33:44,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:33:44,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:43" (1/3) ... [2024-10-11 14:33:44,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7685fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:44, skipping insertion in model container [2024-10-11 14:33:44,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:43" (2/3) ... [2024-10-11 14:33:44,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7685fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:44, skipping insertion in model container [2024-10-11 14:33:44,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:44" (3/3) ... [2024-10-11 14:33:44,441 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-10-11 14:33:44,459 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:33:44,459 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:33:44,459 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:33:44,507 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:33:44,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-10-11 14:33:44,579 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-10-11 14:33:44,579 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:44,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 14:33:44,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-10-11 14:33:44,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-10-11 14:33:44,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:33:44,612 INFO L333 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, 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;@449c04c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:33:44,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:33:44,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:33:44,628 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-10-11 14:33:44,629 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:44,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:44,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:44,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:44,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1962402328, now seen corresponding path program 1 times [2024-10-11 14:33:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644366341] [2024-10-11 14:33:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644366341] [2024-10-11 14:33:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644366341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:44,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103884789] [2024-10-11 14:33:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:45,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:45,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 14:33:45,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:45,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:45,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 14:33:45,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:45,253 INFO L124 PetriNetUnfolderBase]: 350/569 cut-off events. [2024-10-11 14:33:45,253 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-11 14:33:45,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 569 events. 350/569 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 118 based on Foata normal form. 15/571 useless extension candidates. Maximal degree in co-relation 1072. Up to 432 conditions per place. [2024-10-11 14:33:45,263 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-10-11 14:33:45,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 188 flow [2024-10-11 14:33:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-11 14:33:45,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-11 14:33:45,280 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 3 states and 66 transitions. [2024-10-11 14:33:45,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 188 flow [2024-10-11 14:33:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:33:45,286 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 87 flow [2024-10-11 14:33:45,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-11 14:33:45,292 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-10-11 14:33:45,294 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 87 flow [2024-10-11 14:33:45,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:45,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:45,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:45,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:33:45,295 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:45,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1662219836, now seen corresponding path program 2 times [2024-10-11 14:33:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869328923] [2024-10-11 14:33:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:45,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869328923] [2024-10-11 14:33:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869328923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:33:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075951266] [2024-10-11 14:33:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:45,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:45,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 14:33:45,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:45,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:45,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 14:33:45,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:45,757 INFO L124 PetriNetUnfolderBase]: 420/707 cut-off events. [2024-10-11 14:33:45,757 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-11 14:33:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 707 events. 420/707 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2726 event pairs, 316 based on Foata normal form. 26/710 useless extension candidates. Maximal degree in co-relation 526. Up to 547 conditions per place. [2024-10-11 14:33:45,764 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 2 changer transitions 13/47 dead transitions. [2024-10-11 14:33:45,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2024-10-11 14:33:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-11 14:33:45,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-11 14:33:45,767 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 87 flow. Second operand 4 states and 77 transitions. [2024-10-11 14:33:45,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2024-10-11 14:33:45,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:33:45,770 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2024-10-11 14:33:45,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-10-11 14:33:45,772 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-10-11 14:33:45,772 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2024-10-11 14:33:45,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:45,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:45,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:45,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:33:45,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:45,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -388477036, now seen corresponding path program 1 times [2024-10-11 14:33:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245795833] [2024-10-11 14:33:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:45,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245795833] [2024-10-11 14:33:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245795833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:45,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:33:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49781093] [2024-10-11 14:33:45,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:45,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:45,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:45,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:45,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:45,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 14:33:45,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:45,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:45,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 14:33:45,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:46,016 INFO L124 PetriNetUnfolderBase]: 224/390 cut-off events. [2024-10-11 14:33:46,016 INFO L125 PetriNetUnfolderBase]: For 94/97 co-relation queries the response was YES. [2024-10-11 14:33:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 390 events. 224/390 cut-off events. For 94/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1296 event pairs, 56 based on Foata normal form. 29/406 useless extension candidates. Maximal degree in co-relation 866. Up to 146 conditions per place. [2024-10-11 14:33:46,021 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-10-11 14:33:46,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 228 flow [2024-10-11 14:33:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-11 14:33:46,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-10-11 14:33:46,024 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 100 flow. Second operand 4 states and 81 transitions. [2024-10-11 14:33:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 228 flow [2024-10-11 14:33:46,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:46,027 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-10-11 14:33:46,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-11 14:33:46,029 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-10-11 14:33:46,029 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-10-11 14:33:46,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:46,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:46,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:46,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:33:46,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:46,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2031575406, now seen corresponding path program 2 times [2024-10-11 14:33:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710311274] [2024-10-11 14:33:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710311274] [2024-10-11 14:33:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710311274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084490295] [2024-10-11 14:33:46,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:33:46,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:46,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:46,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:46,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:33:46,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:33:46,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:46,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 14:33:46,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:46,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:33:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084490295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:33:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-11 14:33:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66510322] [2024-10-11 14:33:46,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:46,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:33:46,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:33:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:33:46,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:33:46,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:46,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:46,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:33:46,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:47,056 INFO L124 PetriNetUnfolderBase]: 548/925 cut-off events. [2024-10-11 14:33:47,057 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-10-11 14:33:47,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 925 events. 548/925 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4205 event pairs, 131 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 2160. Up to 341 conditions per place. [2024-10-11 14:33:47,064 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 62 selfloop transitions, 14 changer transitions 17/97 dead transitions. [2024-10-11 14:33:47,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 467 flow [2024-10-11 14:33:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:33:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:33:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-10-11 14:33:47,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-10-11 14:33:47,068 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 8 states and 149 transitions. [2024-10-11 14:33:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 467 flow [2024-10-11 14:33:47,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 447 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:47,073 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 207 flow [2024-10-11 14:33:47,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-10-11 14:33:47,075 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-10-11 14:33:47,076 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 207 flow [2024-10-11 14:33:47,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:47,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:47,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:47,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:33:47,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:47,278 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:47,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:47,278 INFO L85 PathProgramCache]: Analyzing trace with hash 476846050, now seen corresponding path program 3 times [2024-10-11 14:33:47,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427465840] [2024-10-11 14:33:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:47,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427465840] [2024-10-11 14:33:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427465840] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265171878] [2024-10-11 14:33:47,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:33:47,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:47,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:47,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:33:47,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:33:47,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:47,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 14:33:47,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:47,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:33:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265171878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:33:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-11 14:33:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284804188] [2024-10-11 14:33:47,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:47,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:33:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:33:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:33:47,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:33:47,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:47,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:47,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:33:47,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:48,162 INFO L124 PetriNetUnfolderBase]: 742/1251 cut-off events. [2024-10-11 14:33:48,162 INFO L125 PetriNetUnfolderBase]: For 1228/1233 co-relation queries the response was YES. [2024-10-11 14:33:48,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1251 events. 742/1251 cut-off events. For 1228/1233 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6093 event pairs, 185 based on Foata normal form. 6/1255 useless extension candidates. Maximal degree in co-relation 3579. Up to 405 conditions per place. [2024-10-11 14:33:48,171 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 64 selfloop transitions, 21 changer transitions 17/106 dead transitions. [2024-10-11 14:33:48,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 627 flow [2024-10-11 14:33:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:33:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:33:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-10-11 14:33:48,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-11 14:33:48,173 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 207 flow. Second operand 8 states and 148 transitions. [2024-10-11 14:33:48,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 627 flow [2024-10-11 14:33:48,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 599 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-11 14:33:48,184 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 355 flow [2024-10-11 14:33:48,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-10-11 14:33:48,185 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-10-11 14:33:48,186 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 355 flow [2024-10-11 14:33:48,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:48,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:48,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:48,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:33:48,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:48,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:48,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1592852712, now seen corresponding path program 4 times [2024-10-11 14:33:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208921609] [2024-10-11 14:33:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:48,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:48,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208921609] [2024-10-11 14:33:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208921609] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455768802] [2024-10-11 14:33:48,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:33:48,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:48,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:48,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:48,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:33:48,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:33:48,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:48,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:33:48,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:48,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455768802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:48,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-10-11 14:33:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818614015] [2024-10-11 14:33:48,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:48,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:33:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:48,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:33:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:33:48,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 14:33:48,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:48,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:48,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 14:33:48,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:49,082 INFO L124 PetriNetUnfolderBase]: 1071/1882 cut-off events. [2024-10-11 14:33:49,082 INFO L125 PetriNetUnfolderBase]: For 2867/2875 co-relation queries the response was YES. [2024-10-11 14:33:49,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1882 events. 1071/1882 cut-off events. For 2867/2875 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10720 event pairs, 580 based on Foata normal form. 37/1887 useless extension candidates. Maximal degree in co-relation 5823. Up to 868 conditions per place. [2024-10-11 14:33:49,097 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 40 selfloop transitions, 3 changer transitions 39/97 dead transitions. [2024-10-11 14:33:49,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 731 flow [2024-10-11 14:33:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:33:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:33:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-10-11 14:33:49,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-11 14:33:49,099 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 355 flow. Second operand 6 states and 112 transitions. [2024-10-11 14:33:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 731 flow [2024-10-11 14:33:49,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 719 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:49,112 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 387 flow [2024-10-11 14:33:49,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-10-11 14:33:49,114 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-10-11 14:33:49,115 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 387 flow [2024-10-11 14:33:49,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:49,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:49,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:49,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:33:49,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:49,316 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:49,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -952130302, now seen corresponding path program 5 times [2024-10-11 14:33:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144901292] [2024-10-11 14:33:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144901292] [2024-10-11 14:33:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144901292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762199635] [2024-10-11 14:33:50,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:33:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:50,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:33:50,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:33:50,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:50,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-11 14:33:50,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:50,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 14:33:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:51,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:52,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2024-10-11 14:33:52,417 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-11 14:33:52,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 125 [2024-10-11 14:33:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762199635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-10-11 14:33:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121890969] [2024-10-11 14:33:52,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:52,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 14:33:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 14:33:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2024-10-11 14:33:52,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:33:52,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 387 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:52,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:52,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:33:52,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:55,934 INFO L124 PetriNetUnfolderBase]: 2694/4528 cut-off events. [2024-10-11 14:33:55,935 INFO L125 PetriNetUnfolderBase]: For 9430/9435 co-relation queries the response was YES. [2024-10-11 14:33:55,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15044 conditions, 4528 events. 2694/4528 cut-off events. For 9430/9435 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28393 event pairs, 793 based on Foata normal form. 6/4525 useless extension candidates. Maximal degree in co-relation 15012. Up to 1243 conditions per place. [2024-10-11 14:33:55,971 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 218 selfloop transitions, 68 changer transitions 44/334 dead transitions. [2024-10-11 14:33:55,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 334 transitions, 2421 flow [2024-10-11 14:33:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:33:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:33:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 459 transitions. [2024-10-11 14:33:55,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683673469387755 [2024-10-11 14:33:55,975 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 387 flow. Second operand 28 states and 459 transitions. [2024-10-11 14:33:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 334 transitions, 2421 flow [2024-10-11 14:33:56,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 334 transitions, 2303 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-10-11 14:33:56,019 INFO L231 Difference]: Finished difference. Result has 94 places, 124 transitions, 1187 flow [2024-10-11 14:33:56,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1187, PETRI_PLACES=94, PETRI_TRANSITIONS=124} [2024-10-11 14:33:56,020 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2024-10-11 14:33:56,020 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 124 transitions, 1187 flow [2024-10-11 14:33:56,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:56,021 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:56,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:33:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 14:33:56,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:56,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1986714814, now seen corresponding path program 6 times [2024-10-11 14:33:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299461736] [2024-10-11 14:33:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:56,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299461736] [2024-10-11 14:33:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299461736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209426996] [2024-10-11 14:33:57,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:33:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:57,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:57,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:33:57,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-11 14:33:57,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:57,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 14:33:57,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:33:58,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:33:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209426996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:33:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-10-11 14:33:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235892679] [2024-10-11 14:33:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:58,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:33:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:33:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:33:58,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:33:58,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 124 transitions, 1187 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:58,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:33:58,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:58,744 INFO L124 PetriNetUnfolderBase]: 2759/4668 cut-off events. [2024-10-11 14:33:58,745 INFO L125 PetriNetUnfolderBase]: For 13104/13109 co-relation queries the response was YES. [2024-10-11 14:33:58,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16461 conditions, 4668 events. 2759/4668 cut-off events. For 13104/13109 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 29734 event pairs, 704 based on Foata normal form. 6/4662 useless extension candidates. Maximal degree in co-relation 16414. Up to 1450 conditions per place. [2024-10-11 14:33:58,789 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 90 selfloop transitions, 68 changer transitions 18/180 dead transitions. [2024-10-11 14:33:58,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 180 transitions, 1741 flow [2024-10-11 14:33:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:33:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:33:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-10-11 14:33:58,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-11 14:33:58,791 INFO L175 Difference]: Start difference. First operand has 94 places, 124 transitions, 1187 flow. Second operand 8 states and 152 transitions. [2024-10-11 14:33:58,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 180 transitions, 1741 flow [2024-10-11 14:33:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 180 transitions, 1639 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-10-11 14:33:58,853 INFO L231 Difference]: Finished difference. Result has 88 places, 126 transitions, 1283 flow [2024-10-11 14:33:58,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=88, PETRI_TRANSITIONS=126} [2024-10-11 14:33:58,854 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2024-10-11 14:33:58,854 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 126 transitions, 1283 flow [2024-10-11 14:33:58,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:58,854 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:58,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 14:33:59,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:59,055 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:59,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1632198074, now seen corresponding path program 7 times [2024-10-11 14:33:59,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:59,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251527896] [2024-10-11 14:33:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:59,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:00,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:00,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251527896] [2024-10-11 14:34:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251527896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703669294] [2024-10-11 14:34:00,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:34:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:00,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:34:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:00,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:34:00,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:00,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:01,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:34:01,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2024-10-11 14:34:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703669294] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:01,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-10-11 14:34:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46790150] [2024-10-11 14:34:01,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:01,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 14:34:01,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 14:34:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-10-11 14:34:01,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 126 transitions, 1283 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:01,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:01,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:03,968 INFO L124 PetriNetUnfolderBase]: 3173/5491 cut-off events. [2024-10-11 14:34:03,968 INFO L125 PetriNetUnfolderBase]: For 19793/19827 co-relation queries the response was YES. [2024-10-11 14:34:03,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19504 conditions, 5491 events. 3173/5491 cut-off events. For 19793/19827 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 36755 event pairs, 722 based on Foata normal form. 36/5524 useless extension candidates. Maximal degree in co-relation 19453. Up to 1020 conditions per place. [2024-10-11 14:34:04,014 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 157 selfloop transitions, 91 changer transitions 44/296 dead transitions. [2024-10-11 14:34:04,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 296 transitions, 2545 flow [2024-10-11 14:34:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:34:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:34:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 377 transitions. [2024-10-11 14:34:04,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683229813664596 [2024-10-11 14:34:04,018 INFO L175 Difference]: Start difference. First operand has 88 places, 126 transitions, 1283 flow. Second operand 23 states and 377 transitions. [2024-10-11 14:34:04,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 296 transitions, 2545 flow [2024-10-11 14:34:04,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 296 transitions, 2408 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:04,103 INFO L231 Difference]: Finished difference. Result has 113 places, 147 transitions, 1668 flow [2024-10-11 14:34:04,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1668, PETRI_PLACES=113, PETRI_TRANSITIONS=147} [2024-10-11 14:34:04,104 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2024-10-11 14:34:04,108 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 147 transitions, 1668 flow [2024-10-11 14:34:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:04,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:04,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:04,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 14:34:04,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 14:34:04,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:04,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1194065612, now seen corresponding path program 8 times [2024-10-11 14:34:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181014097] [2024-10-11 14:34:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181014097] [2024-10-11 14:34:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181014097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864721713] [2024-10-11 14:34:05,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:34:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:05,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:05,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:34:05,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:34:05,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:05,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 14:34:05,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:05,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:34:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864721713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:05,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:34:05,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-10-11 14:34:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523829775] [2024-10-11 14:34:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:05,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:34:05,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:05,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:34:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:34:05,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:05,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 147 transitions, 1668 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:05,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:05,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:05,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:06,305 INFO L124 PetriNetUnfolderBase]: 3213/5541 cut-off events. [2024-10-11 14:34:06,305 INFO L125 PetriNetUnfolderBase]: For 26806/26837 co-relation queries the response was YES. [2024-10-11 14:34:06,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21219 conditions, 5541 events. 3213/5541 cut-off events. For 26806/26837 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 36681 event pairs, 1005 based on Foata normal form. 25/5563 useless extension candidates. Maximal degree in co-relation 21152. Up to 2354 conditions per place. [2024-10-11 14:34:06,345 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 115 selfloop transitions, 60 changer transitions 18/197 dead transitions. [2024-10-11 14:34:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2270 flow [2024-10-11 14:34:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:34:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:34:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-11 14:34:06,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-11 14:34:06,347 INFO L175 Difference]: Start difference. First operand has 113 places, 147 transitions, 1668 flow. Second operand 8 states and 141 transitions. [2024-10-11 14:34:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2270 flow [2024-10-11 14:34:06,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 197 transitions, 2177 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-11 14:34:06,485 INFO L231 Difference]: Finished difference. Result has 108 places, 150 transitions, 1765 flow [2024-10-11 14:34:06,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1765, PETRI_PLACES=108, PETRI_TRANSITIONS=150} [2024-10-11 14:34:06,487 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2024-10-11 14:34:06,487 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 150 transitions, 1765 flow [2024-10-11 14:34:06,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:06,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:06,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:06,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 14:34:06,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:06,688 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:06,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1646784127, now seen corresponding path program 1 times [2024-10-11 14:34:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714656868] [2024-10-11 14:34:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:06,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:06,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714656868] [2024-10-11 14:34:06,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714656868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398640463] [2024-10-11 14:34:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:06,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:06,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:06,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:06,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:34:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:06,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:34:06,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:06,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:06,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398640463] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:06,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:34:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-10-11 14:34:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864912274] [2024-10-11 14:34:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:06,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:34:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:34:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:34:06,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:06,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 1765 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:06,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:06,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:06,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:07,571 INFO L124 PetriNetUnfolderBase]: 4335/7133 cut-off events. [2024-10-11 14:34:07,571 INFO L125 PetriNetUnfolderBase]: For 36540/36548 co-relation queries the response was YES. [2024-10-11 14:34:07,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26239 conditions, 7133 events. 4335/7133 cut-off events. For 36540/36548 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 45682 event pairs, 990 based on Foata normal form. 4/6245 useless extension candidates. Maximal degree in co-relation 26177. Up to 3306 conditions per place. [2024-10-11 14:34:07,621 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 181 selfloop transitions, 10 changer transitions 0/230 dead transitions. [2024-10-11 14:34:07,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 230 transitions, 3139 flow [2024-10-11 14:34:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:34:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:34:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-11 14:34:07,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-11 14:34:07,623 INFO L175 Difference]: Start difference. First operand has 108 places, 150 transitions, 1765 flow. Second operand 4 states and 88 transitions. [2024-10-11 14:34:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 230 transitions, 3139 flow [2024-10-11 14:34:07,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2955 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:07,804 INFO L231 Difference]: Finished difference. Result has 107 places, 157 transitions, 1761 flow [2024-10-11 14:34:07,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1761, PETRI_PLACES=107, PETRI_TRANSITIONS=157} [2024-10-11 14:34:07,805 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2024-10-11 14:34:07,805 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 157 transitions, 1761 flow [2024-10-11 14:34:07,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:07,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:07,806 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:07,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:34:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 14:34:08,006 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:08,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -853554891, now seen corresponding path program 2 times [2024-10-11 14:34:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339197653] [2024-10-11 14:34:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339197653] [2024-10-11 14:34:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339197653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:08,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120538273] [2024-10-11 14:34:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:08,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:08,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:08,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:08,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 157 transitions, 1761 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:08,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:08,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:09,003 INFO L124 PetriNetUnfolderBase]: 4500/7610 cut-off events. [2024-10-11 14:34:09,003 INFO L125 PetriNetUnfolderBase]: For 34196/34219 co-relation queries the response was YES. [2024-10-11 14:34:09,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29003 conditions, 7610 events. 4500/7610 cut-off events. For 34196/34219 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 51899 event pairs, 2306 based on Foata normal form. 51/7568 useless extension candidates. Maximal degree in co-relation 28218. Up to 5467 conditions per place. [2024-10-11 14:34:09,057 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 145 selfloop transitions, 23 changer transitions 9/216 dead transitions. [2024-10-11 14:34:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 216 transitions, 2679 flow [2024-10-11 14:34:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-11 14:34:09,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-10-11 14:34:09,058 INFO L175 Difference]: Start difference. First operand has 107 places, 157 transitions, 1761 flow. Second operand 5 states and 93 transitions. [2024-10-11 14:34:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 216 transitions, 2679 flow [2024-10-11 14:34:09,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 216 transitions, 2679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:34:09,263 INFO L231 Difference]: Finished difference. Result has 114 places, 168 transitions, 1932 flow [2024-10-11 14:34:09,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1932, PETRI_PLACES=114, PETRI_TRANSITIONS=168} [2024-10-11 14:34:09,264 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-10-11 14:34:09,264 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 168 transitions, 1932 flow [2024-10-11 14:34:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:09,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:09,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:09,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:34:09,265 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:09,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1342553636, now seen corresponding path program 1 times [2024-10-11 14:34:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771016418] [2024-10-11 14:34:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771016418] [2024-10-11 14:34:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771016418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:09,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682324928] [2024-10-11 14:34:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:09,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:09,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:09,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 168 transitions, 1932 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:09,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:09,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:09,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:10,366 INFO L124 PetriNetUnfolderBase]: 4615/7974 cut-off events. [2024-10-11 14:34:10,366 INFO L125 PetriNetUnfolderBase]: For 43027/43053 co-relation queries the response was YES. [2024-10-11 14:34:10,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33482 conditions, 7974 events. 4615/7974 cut-off events. For 43027/43053 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 55860 event pairs, 2041 based on Foata normal form. 140/8033 useless extension candidates. Maximal degree in co-relation 32408. Up to 4916 conditions per place. [2024-10-11 14:34:10,492 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 154 selfloop transitions, 35 changer transitions 13/239 dead transitions. [2024-10-11 14:34:10,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 239 transitions, 3166 flow [2024-10-11 14:34:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-10-11 14:34:10,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-10-11 14:34:10,494 INFO L175 Difference]: Start difference. First operand has 114 places, 168 transitions, 1932 flow. Second operand 5 states and 94 transitions. [2024-10-11 14:34:10,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 239 transitions, 3166 flow [2024-10-11 14:34:10,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 239 transitions, 3150 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-11 14:34:10,775 INFO L231 Difference]: Finished difference. Result has 121 places, 173 transitions, 2085 flow [2024-10-11 14:34:10,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2085, PETRI_PLACES=121, PETRI_TRANSITIONS=173} [2024-10-11 14:34:10,776 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2024-10-11 14:34:10,776 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 173 transitions, 2085 flow [2024-10-11 14:34:10,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:10,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:10,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:10,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:34:10,777 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:10,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1265601632, now seen corresponding path program 2 times [2024-10-11 14:34:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:10,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053299725] [2024-10-11 14:34:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053299725] [2024-10-11 14:34:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053299725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:10,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:34:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680035396] [2024-10-11 14:34:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:10,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:34:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:34:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:34:10,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:10,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 173 transitions, 2085 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:12,092 INFO L124 PetriNetUnfolderBase]: 4819/8308 cut-off events. [2024-10-11 14:34:12,092 INFO L125 PetriNetUnfolderBase]: For 50015/50061 co-relation queries the response was YES. [2024-10-11 14:34:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38212 conditions, 8308 events. 4819/8308 cut-off events. For 50015/50061 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 58487 event pairs, 750 based on Foata normal form. 93/8343 useless extension candidates. Maximal degree in co-relation 36772. Up to 3891 conditions per place. [2024-10-11 14:34:12,167 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 191 selfloop transitions, 40 changer transitions 8/276 dead transitions. [2024-10-11 14:34:12,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 276 transitions, 3730 flow [2024-10-11 14:34:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:34:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:34:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-11 14:34:12,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-10-11 14:34:12,169 INFO L175 Difference]: Start difference. First operand has 121 places, 173 transitions, 2085 flow. Second operand 7 states and 135 transitions. [2024-10-11 14:34:12,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 276 transitions, 3730 flow [2024-10-11 14:34:12,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 276 transitions, 3714 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-11 14:34:12,474 INFO L231 Difference]: Finished difference. Result has 127 places, 178 transitions, 2252 flow [2024-10-11 14:34:12,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2252, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2024-10-11 14:34:12,475 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2024-10-11 14:34:12,475 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 2252 flow [2024-10-11 14:34:12,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:12,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:12,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:12,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:34:12,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:12,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 747233996, now seen corresponding path program 3 times [2024-10-11 14:34:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315336921] [2024-10-11 14:34:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315336921] [2024-10-11 14:34:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315336921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908236103] [2024-10-11 14:34:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:12,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:12,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:12,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 2252 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:13,522 INFO L124 PetriNetUnfolderBase]: 4762/8282 cut-off events. [2024-10-11 14:34:13,522 INFO L125 PetriNetUnfolderBase]: For 59696/59801 co-relation queries the response was YES. [2024-10-11 14:34:13,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39266 conditions, 8282 events. 4762/8282 cut-off events. For 59696/59801 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 59072 event pairs, 1548 based on Foata normal form. 321/8473 useless extension candidates. Maximal degree in co-relation 38574. Up to 3540 conditions per place. [2024-10-11 14:34:13,575 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 156 selfloop transitions, 30 changer transitions 15/235 dead transitions. [2024-10-11 14:34:13,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 235 transitions, 3185 flow [2024-10-11 14:34:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-10-11 14:34:13,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-10-11 14:34:13,577 INFO L175 Difference]: Start difference. First operand has 127 places, 178 transitions, 2252 flow. Second operand 5 states and 103 transitions. [2024-10-11 14:34:13,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 235 transitions, 3185 flow [2024-10-11 14:34:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 235 transitions, 3091 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-11 14:34:13,840 INFO L231 Difference]: Finished difference. Result has 129 places, 171 transitions, 2153 flow [2024-10-11 14:34:13,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2153, PETRI_PLACES=129, PETRI_TRANSITIONS=171} [2024-10-11 14:34:13,842 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2024-10-11 14:34:13,842 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 2153 flow [2024-10-11 14:34:13,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:13,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:13,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:13,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:34:13,843 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:13,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2008831494, now seen corresponding path program 4 times [2024-10-11 14:34:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334244305] [2024-10-11 14:34:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334244305] [2024-10-11 14:34:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334244305] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417989623] [2024-10-11 14:34:13,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:34:13,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:13,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:13,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:13,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:34:14,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:34:14,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:14,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:34:14,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:14,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417989623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:14,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-11 14:34:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138542526] [2024-10-11 14:34:14,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:14,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:34:14,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:34:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:34:14,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 171 transitions, 2153 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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) [2024-10-11 14:34:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:14,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:14,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:15,068 INFO L124 PetriNetUnfolderBase]: 3981/6947 cut-off events. [2024-10-11 14:34:15,068 INFO L125 PetriNetUnfolderBase]: For 48580/48608 co-relation queries the response was YES. [2024-10-11 14:34:15,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33477 conditions, 6947 events. 3981/6947 cut-off events. For 48580/48608 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 48594 event pairs, 1324 based on Foata normal form. 124/6995 useless extension candidates. Maximal degree in co-relation 33097. Up to 3599 conditions per place. [2024-10-11 14:34:15,246 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 150 selfloop transitions, 44 changer transitions 16/241 dead transitions. [2024-10-11 14:34:15,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 241 transitions, 3254 flow [2024-10-11 14:34:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:34:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:34:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-11 14:34:15,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-11 14:34:15,249 INFO L175 Difference]: Start difference. First operand has 129 places, 171 transitions, 2153 flow. Second operand 7 states and 128 transitions. [2024-10-11 14:34:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 241 transitions, 3254 flow [2024-10-11 14:34:15,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 241 transitions, 3138 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:15,424 INFO L231 Difference]: Finished difference. Result has 128 places, 158 transitions, 1981 flow [2024-10-11 14:34:15,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1981, PETRI_PLACES=128, PETRI_TRANSITIONS=158} [2024-10-11 14:34:15,424 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2024-10-11 14:34:15,424 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 158 transitions, 1981 flow [2024-10-11 14:34:15,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 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) [2024-10-11 14:34:15,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:15,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:15,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 14:34:15,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:15,630 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:15,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash -111585165, now seen corresponding path program 3 times [2024-10-11 14:34:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205367863] [2024-10-11 14:34:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:15,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205367863] [2024-10-11 14:34:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205367863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:15,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184063117] [2024-10-11 14:34:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:15,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:15,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:15,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 158 transitions, 1981 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:15,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:15,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:15,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:16,493 INFO L124 PetriNetUnfolderBase]: 3417/5938 cut-off events. [2024-10-11 14:34:16,493 INFO L125 PetriNetUnfolderBase]: For 44385/44429 co-relation queries the response was YES. [2024-10-11 14:34:16,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29748 conditions, 5938 events. 3417/5938 cut-off events. For 44385/44429 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38924 event pairs, 1209 based on Foata normal form. 108/5972 useless extension candidates. Maximal degree in co-relation 29381. Up to 3152 conditions per place. [2024-10-11 14:34:16,527 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 123 selfloop transitions, 17 changer transitions 25/191 dead transitions. [2024-10-11 14:34:16,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 191 transitions, 2590 flow [2024-10-11 14:34:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-10-11 14:34:16,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-10-11 14:34:16,529 INFO L175 Difference]: Start difference. First operand has 128 places, 158 transitions, 1981 flow. Second operand 5 states and 97 transitions. [2024-10-11 14:34:16,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 191 transitions, 2590 flow [2024-10-11 14:34:16,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 191 transitions, 2457 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-10-11 14:34:16,652 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 1663 flow [2024-10-11 14:34:16,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1663, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2024-10-11 14:34:16,652 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2024-10-11 14:34:16,653 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 1663 flow [2024-10-11 14:34:16,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:16,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:16,653 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:16,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:34:16,653 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:16,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1406775322, now seen corresponding path program 9 times [2024-10-11 14:34:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:16,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560870406] [2024-10-11 14:34:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560870406] [2024-10-11 14:34:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560870406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456267055] [2024-10-11 14:34:19,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:34:19,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:19,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:19,371 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:34:19,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:34:19,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:19,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 14:34:19,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 14:34:19,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:34:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456267055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:19,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:34:19,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-10-11 14:34:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036870182] [2024-10-11 14:34:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:19,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:34:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:34:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:34:19,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:19,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 1663 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:19,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:19,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:19,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:20,365 INFO L124 PetriNetUnfolderBase]: 3250/5721 cut-off events. [2024-10-11 14:34:20,365 INFO L125 PetriNetUnfolderBase]: For 37778/37829 co-relation queries the response was YES. [2024-10-11 14:34:20,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27825 conditions, 5721 events. 3250/5721 cut-off events. For 37778/37829 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 38182 event pairs, 1074 based on Foata normal form. 26/5708 useless extension candidates. Maximal degree in co-relation 27480. Up to 2358 conditions per place. [2024-10-11 14:34:20,399 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 93 selfloop transitions, 49 changer transitions 32/190 dead transitions. [2024-10-11 14:34:20,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 190 transitions, 2251 flow [2024-10-11 14:34:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:34:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:34:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-11 14:34:20,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-10-11 14:34:20,400 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 1663 flow. Second operand 8 states and 142 transitions. [2024-10-11 14:34:20,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 190 transitions, 2251 flow [2024-10-11 14:34:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 190 transitions, 2169 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-10-11 14:34:20,468 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 1629 flow [2024-10-11 14:34:20,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1629, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2024-10-11 14:34:20,468 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2024-10-11 14:34:20,468 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 1629 flow [2024-10-11 14:34:20,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:20,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:20,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:20,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 14:34:20,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 14:34:20,670 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:20,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 208255937, now seen corresponding path program 1 times [2024-10-11 14:34:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963715630] [2024-10-11 14:34:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963715630] [2024-10-11 14:34:21,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963715630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638717795] [2024-10-11 14:34:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:21,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:21,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:21,969 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:21,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:34:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:22,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 14:34:22,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:22,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-11 14:34:22,552 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-10-11 14:34:22,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 35 [2024-10-11 14:34:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:22,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:24,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-10-11 14:34:24,364 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-10-11 14:34:24,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 160 [2024-10-11 14:34:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638717795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:26,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-11 14:34:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123948492] [2024-10-11 14:34:26,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:26,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 14:34:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 14:34:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 14:34:26,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:26,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 1629 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:26,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:26,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:35,168 INFO L124 PetriNetUnfolderBase]: 3856/6703 cut-off events. [2024-10-11 14:34:35,168 INFO L125 PetriNetUnfolderBase]: For 41989/42059 co-relation queries the response was YES. [2024-10-11 14:34:35,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31742 conditions, 6703 events. 3856/6703 cut-off events. For 41989/42059 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 44840 event pairs, 1447 based on Foata normal form. 57/6679 useless extension candidates. Maximal degree in co-relation 31687. Up to 3087 conditions per place. [2024-10-11 14:34:35,225 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 241 selfloop transitions, 53 changer transitions 34/344 dead transitions. [2024-10-11 14:34:35,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 344 transitions, 3439 flow [2024-10-11 14:34:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:34:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:34:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 431 transitions. [2024-10-11 14:34:35,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4560846560846561 [2024-10-11 14:34:35,227 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 1629 flow. Second operand 27 states and 431 transitions. [2024-10-11 14:34:35,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 344 transitions, 3439 flow [2024-10-11 14:34:35,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 344 transitions, 3303 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:35,289 INFO L231 Difference]: Finished difference. Result has 143 places, 163 transitions, 1967 flow [2024-10-11 14:34:35,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1967, PETRI_PLACES=143, PETRI_TRANSITIONS=163} [2024-10-11 14:34:35,290 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2024-10-11 14:34:35,290 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 163 transitions, 1967 flow [2024-10-11 14:34:35,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:35,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:35,290 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:35,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 14:34:35,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:35,491 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:35,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1674729363, now seen corresponding path program 2 times [2024-10-11 14:34:35,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298659142] [2024-10-11 14:34:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:35,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298659142] [2024-10-11 14:34:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298659142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265289938] [2024-10-11 14:34:37,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:34:37,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:37,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:37,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:37,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:34:37,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:34:37,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:37,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 14:34:37,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:37,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 14:34:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:37,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:38,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-10-11 14:34:38,894 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-11 14:34:38,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-10-11 14:34:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265289938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:39,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-11 14:34:39,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404587542] [2024-10-11 14:34:39,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:39,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 14:34:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 14:34:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 14:34:39,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:39,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 1967 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:39,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:39,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:39,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:47,293 INFO L124 PetriNetUnfolderBase]: 5518/9635 cut-off events. [2024-10-11 14:34:47,293 INFO L125 PetriNetUnfolderBase]: For 62935/63015 co-relation queries the response was YES. [2024-10-11 14:34:47,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47347 conditions, 9635 events. 5518/9635 cut-off events. For 62935/63015 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 69583 event pairs, 1145 based on Foata normal form. 61/9654 useless extension candidates. Maximal degree in co-relation 47281. Up to 1355 conditions per place. [2024-10-11 14:34:47,373 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 379 selfloop transitions, 154 changer transitions 44/593 dead transitions. [2024-10-11 14:34:47,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 593 transitions, 6209 flow [2024-10-11 14:34:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 14:34:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-11 14:34:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 765 transitions. [2024-10-11 14:34:47,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-10-11 14:34:47,376 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 1967 flow. Second operand 47 states and 765 transitions. [2024-10-11 14:34:47,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 593 transitions, 6209 flow [2024-10-11 14:34:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 593 transitions, 6036 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-10-11 14:34:47,615 INFO L231 Difference]: Finished difference. Result has 192 places, 247 transitions, 3464 flow [2024-10-11 14:34:47,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3464, PETRI_PLACES=192, PETRI_TRANSITIONS=247} [2024-10-11 14:34:47,616 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2024-10-11 14:34:47,616 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 247 transitions, 3464 flow [2024-10-11 14:34:47,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:47,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:47,617 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:47,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:34:47,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:47,817 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:47,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 899290235, now seen corresponding path program 3 times [2024-10-11 14:34:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585852460] [2024-10-11 14:34:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585852460] [2024-10-11 14:34:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585852460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796970310] [2024-10-11 14:34:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:34:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:49,514 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:49,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:34:49,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:34:49,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:49,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 14:34:49,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:49,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 14:34:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:50,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:50,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-10-11 14:34:50,953 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-10-11 14:34:50,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-10-11 14:34:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796970310] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:51,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-10-11 14:34:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556449501] [2024-10-11 14:34:51,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:51,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 14:34:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 14:34:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 14:34:51,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:34:51,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 247 transitions, 3464 flow. Second operand has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:51,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:51,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:34:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:56,414 INFO L124 PetriNetUnfolderBase]: 6115/10742 cut-off events. [2024-10-11 14:34:56,415 INFO L125 PetriNetUnfolderBase]: For 85581/85681 co-relation queries the response was YES. [2024-10-11 14:34:56,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55163 conditions, 10742 events. 6115/10742 cut-off events. For 85581/85681 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 79355 event pairs, 1621 based on Foata normal form. 81/10774 useless extension candidates. Maximal degree in co-relation 55083. Up to 1554 conditions per place. [2024-10-11 14:34:56,521 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 357 selfloop transitions, 124 changer transitions 35/532 dead transitions. [2024-10-11 14:34:56,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 532 transitions, 6376 flow [2024-10-11 14:34:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 14:34:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-11 14:34:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 543 transitions. [2024-10-11 14:34:56,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4701298701298701 [2024-10-11 14:34:56,523 INFO L175 Difference]: Start difference. First operand has 192 places, 247 transitions, 3464 flow. Second operand 33 states and 543 transitions. [2024-10-11 14:34:56,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 532 transitions, 6376 flow [2024-10-11 14:34:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 532 transitions, 5784 flow, removed 239 selfloop flow, removed 19 redundant places. [2024-10-11 14:34:56,946 INFO L231 Difference]: Finished difference. Result has 211 places, 266 transitions, 3516 flow [2024-10-11 14:34:56,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3516, PETRI_PLACES=211, PETRI_TRANSITIONS=266} [2024-10-11 14:34:56,947 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 173 predicate places. [2024-10-11 14:34:56,947 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 266 transitions, 3516 flow [2024-10-11 14:34:56,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.333333333333334) internal successors, (336), 36 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:56,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:56,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:56,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 14:34:57,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:57,148 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:57,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1873440817, now seen corresponding path program 4 times [2024-10-11 14:34:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827825916] [2024-10-11 14:34:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat