./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:22:47,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:22:47,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:22:47,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:22:47,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:22:47,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:22:47,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:22:47,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:22:47,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:22:47,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:22:47,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:22:47,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:22:47,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:22:47,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:22:47,175 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:22:47,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:22:47,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:22:47,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:22:47,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:22:47,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:22:47,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:22:47,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:22:47,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:22:47,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:22:47,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:22:47,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:22:47,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:22:47,178 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:22:47,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:22:47,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:22:47,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:22:47,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:22:47,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:47,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:22:47,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:22:47,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:22:47,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:22:47,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:22:47,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:22:47,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:22:47,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:22:47,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:22:47,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:22:47,182 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:22:47,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:22:47,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:22:47,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:22:47,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:22:47,416 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:22:47,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2024-02-20 12:22:48,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:22:48,626 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:22:48,626 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2024-02-20 12:22:48,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f73392a/2b712c9247304aa9abb9e18142479d96/FLAGa33dce4e2 [2024-02-20 12:22:48,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f73392a/2b712c9247304aa9abb9e18142479d96 [2024-02-20 12:22:48,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:22:48,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:22:48,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:48,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:22:48,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:22:48,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2765bd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48, skipping insertion in model container [2024-02-20 12:22:48,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,679 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:22:48,813 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2024-02-20 12:22:48,826 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:48,838 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:22:48,855 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2024-02-20 12:22:48,858 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:48,875 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:22:48,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48 WrapperNode [2024-02-20 12:22:48,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:48,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:48,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:22:48,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:22:48,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,949 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 186 [2024-02-20 12:22:48,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:48,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:22:48,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:22:48,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:22:48,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,993 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 2, 5]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-20 12:22:48,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:48,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:22:49,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:22:49,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:22:49,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:22:49,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (1/1) ... [2024-02-20 12:22:49,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:49,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 12:22:49,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 12:22:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:22:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:22:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:22:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:22:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:22:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:22:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:22:49,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:22:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:22:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:22:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:22:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:22:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:22:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:22:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:22:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:22:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:22:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:22:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:22:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:22:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:22:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:22:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:22:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:22:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:22:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:22:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:22:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:22:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:22:49,125 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:22:49,300 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:22:49,301 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:22:49,533 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:22:49,533 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:22:49,711 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:22:49,711 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-20 12:22:49,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:49 BoogieIcfgContainer [2024-02-20 12:22:49,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:22:49,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:22:49,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:22:49,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:22:49,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:22:48" (1/3) ... [2024-02-20 12:22:49,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3112ca6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:49, skipping insertion in model container [2024-02-20 12:22:49,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:48" (2/3) ... [2024-02-20 12:22:49,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3112ca6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:49, skipping insertion in model container [2024-02-20 12:22:49,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:49" (3/3) ... [2024-02-20 12:22:49,722 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-02-20 12:22:49,739 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:22:49,739 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:22:49,739 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:22:49,807 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:22:49,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 36 transitions, 93 flow [2024-02-20 12:22:49,874 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2024-02-20 12:22:49,874 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:49,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 3/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-02-20 12:22:49,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 36 transitions, 93 flow [2024-02-20 12:22:49,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 82 flow [2024-02-20 12:22:49,903 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:22:49,910 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@399eab34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:22:49,911 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:22:49,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:22:49,928 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2024-02-20 12:22:49,928 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:49,928 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:49,929 INFO L234 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] [2024-02-20 12:22:49,930 INFO L432 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)] === [2024-02-20 12:22:49,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1641150166, now seen corresponding path program 1 times [2024-02-20 12:22:49,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119794437] [2024-02-20 12:22:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119794437] [2024-02-20 12:22:50,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119794437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:50,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:50,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:22:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595000835] [2024-02-20 12:22:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:50,523 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:22:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:22:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:22:50,553 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-02-20 12:22:50,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:50,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:50,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-02-20 12:22:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:50,819 INFO L124 PetriNetUnfolderBase]: 561/888 cut-off events. [2024-02-20 12:22:50,820 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-20 12:22:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 888 events. 561/888 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3157 event pairs, 446 based on Foata normal form. 44/914 useless extension candidates. Maximal degree in co-relation 1368. Up to 742 conditions per place. [2024-02-20 12:22:50,831 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 26 selfloop transitions, 2 changer transitions 13/46 dead transitions. [2024-02-20 12:22:50,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 201 flow [2024-02-20 12:22:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:22:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:22:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-02-20 12:22:50,842 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-02-20 12:22:50,845 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-02-20 12:22:50,845 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 201 flow [2024-02-20 12:22:50,845 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:50,845 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:50,845 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:50,845 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:22:50,846 INFO L432 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)] === [2024-02-20 12:22:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2016968475, now seen corresponding path program 1 times [2024-02-20 12:22:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981088049] [2024-02-20 12:22:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:50,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:50,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981088049] [2024-02-20 12:22:50,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981088049] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:50,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:22:50,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308536528] [2024-02-20 12:22:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:50,921 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:22:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:22:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:22:50,922 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-02-20 12:22:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:50,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-02-20 12:22:50,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:51,051 INFO L124 PetriNetUnfolderBase]: 307/524 cut-off events. [2024-02-20 12:22:51,051 INFO L125 PetriNetUnfolderBase]: For 83/151 co-relation queries the response was YES. [2024-02-20 12:22:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 524 events. 307/524 cut-off events. For 83/151 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1765 event pairs, 104 based on Foata normal form. 48/553 useless extension candidates. Maximal degree in co-relation 1075. Up to 392 conditions per place. [2024-02-20 12:22:51,054 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 43 selfloop transitions, 5 changer transitions 13/66 dead transitions. [2024-02-20 12:22:51,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 415 flow [2024-02-20 12:22:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:22:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:22:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-02-20 12:22:51,058 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-02-20 12:22:51,058 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-02-20 12:22:51,059 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 66 transitions, 415 flow [2024-02-20 12:22:51,059 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:51,060 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:51,060 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:51,060 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:22:51,061 INFO L432 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)] === [2024-02-20 12:22:51,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2048986761, now seen corresponding path program 2 times [2024-02-20 12:22:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:51,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001705482] [2024-02-20 12:22:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:51,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001705482] [2024-02-20 12:22:51,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001705482] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:51,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117338944] [2024-02-20 12:22:51,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:51,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:51,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:51,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:51,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 12:22:51,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 12:22:51,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:51,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 12:22:51,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:51,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:22:51,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117338944] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:51,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:22:51,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-02-20 12:22:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591835607] [2024-02-20 12:22:51,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:51,543 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:22:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:22:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-02-20 12:22:51,552 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:22:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 66 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:51,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:22:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:51,919 INFO L124 PetriNetUnfolderBase]: 783/1333 cut-off events. [2024-02-20 12:22:51,919 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-02-20 12:22:51,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 1333 events. 783/1333 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6628 event pairs, 186 based on Foata normal form. 1/1330 useless extension candidates. Maximal degree in co-relation 3222. Up to 812 conditions per place. [2024-02-20 12:22:51,926 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 72 selfloop transitions, 14 changer transitions 48/137 dead transitions. [2024-02-20 12:22:51,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 137 transitions, 1119 flow [2024-02-20 12:22:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:22:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:22:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-02-20 12:22:51,930 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-02-20 12:22:51,931 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-02-20 12:22:51,931 INFO L507 AbstractCegarLoop]: Abstraction has has 52 places, 137 transitions, 1119 flow [2024-02-20 12:22:51,931 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:51,931 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:51,932 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:51,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:52,145 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:52,145 INFO L432 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)] === [2024-02-20 12:22:52,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 121755967, now seen corresponding path program 3 times [2024-02-20 12:22:52,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803609115] [2024-02-20 12:22:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803609115] [2024-02-20 12:22:52,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803609115] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633240188] [2024-02-20 12:22:52,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:22:52,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:52,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 12:22:52,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 12:22:52,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:52,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 12:22:52,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:52,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:22:52,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633240188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:52,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:22:52,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-02-20 12:22:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388306869] [2024-02-20 12:22:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:52,508 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:22:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:22:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-02-20 12:22:52,515 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:22:52,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 137 transitions, 1119 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:52,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:52,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:22:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:52,913 INFO L124 PetriNetUnfolderBase]: 1127/1958 cut-off events. [2024-02-20 12:22:52,913 INFO L125 PetriNetUnfolderBase]: For 483/499 co-relation queries the response was YES. [2024-02-20 12:22:52,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 1958 events. 1127/1958 cut-off events. For 483/499 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10760 event pairs, 222 based on Foata normal form. 1/1957 useless extension candidates. Maximal degree in co-relation 5850. Up to 1165 conditions per place. [2024-02-20 12:22:52,926 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 101 selfloop transitions, 21 changer transitions 81/206 dead transitions. [2024-02-20 12:22:52,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 206 transitions, 2092 flow [2024-02-20 12:22:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:22:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:22:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-02-20 12:22:52,928 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-02-20 12:22:52,928 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2024-02-20 12:22:52,929 INFO L507 AbstractCegarLoop]: Abstraction has has 59 places, 206 transitions, 2092 flow [2024-02-20 12:22:52,929 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:52,929 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:52,929 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:52,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:53,142 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-20 12:22:53,142 INFO L432 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)] === [2024-02-20 12:22:53,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 692654359, now seen corresponding path program 4 times [2024-02-20 12:22:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:53,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079533189] [2024-02-20 12:22:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:53,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079533189] [2024-02-20 12:22:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079533189] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355835723] [2024-02-20 12:22:53,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:22:53,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:53,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:53,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 12:22:53,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:22:53,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:53,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:22:53,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:53,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355835723] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:53,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-20 12:22:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472148713] [2024-02-20 12:22:53,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:53,427 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-20 12:22:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-20 12:22:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:22:53,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-02-20 12:22:53,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 206 transitions, 2092 flow. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:53,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:53,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-02-20 12:22:53,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:53,792 INFO L124 PetriNetUnfolderBase]: 1744/2999 cut-off events. [2024-02-20 12:22:53,793 INFO L125 PetriNetUnfolderBase]: For 968/992 co-relation queries the response was YES. [2024-02-20 12:22:53,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 2999 events. 1744/2999 cut-off events. For 968/992 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17880 event pairs, 325 based on Foata normal form. 54/3050 useless extension candidates. Maximal degree in co-relation 6864. Up to 1958 conditions per place. [2024-02-20 12:22:53,814 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 104 selfloop transitions, 3 changer transitions 169/295 dead transitions. [2024-02-20 12:22:53,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 295 transitions, 3582 flow [2024-02-20 12:22:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:22:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:22:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-02-20 12:22:53,815 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-02-20 12:22:53,817 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-02-20 12:22:53,818 INFO L507 AbstractCegarLoop]: Abstraction has has 64 places, 295 transitions, 3582 flow [2024-02-20 12:22:53,818 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:53,818 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:53,818 INFO L234 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] [2024-02-20 12:22:53,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:54,031 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:54,034 INFO L432 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)] === [2024-02-20 12:22:54,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -354871258, now seen corresponding path program 5 times [2024-02-20 12:22:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990823228] [2024-02-20 12:22:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:55,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990823228] [2024-02-20 12:22:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990823228] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212920927] [2024-02-20 12:22:55,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:22:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:55,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:55,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 12:22:55,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:55,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:55,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 37 conjunts are in the unsatisfiable core [2024-02-20 12:22:55,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:55,752 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 [2024-02-20 12:22:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:56,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:56,869 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 [2024-02-20 12:22:56,914 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-02-20 12:22:56,914 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 145 treesize of output 129 [2024-02-20 12:22:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212920927] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:57,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:57,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-02-20 12:22:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956799076] [2024-02-20 12:22:57,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:57,244 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-02-20 12:22:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-02-20 12:22:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-02-20 12:22:57,271 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:22:57,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 295 transitions, 3582 flow. Second operand has 32 states, 32 states have (on average 8.4375) internal successors, (270), 32 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:57,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:57,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:22:57,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:01,944 INFO L124 PetriNetUnfolderBase]: 4162/7107 cut-off events. [2024-02-20 12:23:01,944 INFO L125 PetriNetUnfolderBase]: For 3188/3272 co-relation queries the response was YES. [2024-02-20 12:23:01,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44991 conditions, 7107 events. 4162/7107 cut-off events. For 3188/3272 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 48275 event pairs, 616 based on Foata normal form. 34/7134 useless extension candidates. Maximal degree in co-relation 17707. Up to 5261 conditions per place. [2024-02-20 12:23:01,995 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 411 selfloop transitions, 77 changer transitions 344/835 dead transitions. [2024-02-20 12:23:01,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 835 transitions, 11552 flow [2024-02-20 12:23:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-02-20 12:23:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-02-20 12:23:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 643 transitions. [2024-02-20 12:23:01,999 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.457977207977208 [2024-02-20 12:23:02,000 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2024-02-20 12:23:02,000 INFO L507 AbstractCegarLoop]: Abstraction has has 102 places, 835 transitions, 11552 flow [2024-02-20 12:23:02,001 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.4375) internal successors, (270), 32 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:02,001 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:02,001 INFO L234 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] [2024-02-20 12:23:02,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:02,214 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:02,214 INFO L432 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)] === [2024-02-20 12:23:02,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1524954598, now seen corresponding path program 6 times [2024-02-20 12:23:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954469273] [2024-02-20 12:23:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:23:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954469273] [2024-02-20 12:23:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954469273] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382874456] [2024-02-20 12:23:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:23:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:03,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:03,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:23:03,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-02-20 12:23:03,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:03,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:23:03,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:03,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:23:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382874456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:23:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-02-20 12:23:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298501811] [2024-02-20 12:23:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:03,522 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:23:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:23:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:03,526 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:03,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 835 transitions, 11552 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:03,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:03,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:03,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:04,704 INFO L124 PetriNetUnfolderBase]: 4358/7473 cut-off events. [2024-02-20 12:23:04,705 INFO L125 PetriNetUnfolderBase]: For 4799/4847 co-relation queries the response was YES. [2024-02-20 12:23:04,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54491 conditions, 7473 events. 4358/7473 cut-off events. For 4799/4847 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 51405 event pairs, 632 based on Foata normal form. 26/7492 useless extension candidates. Maximal degree in co-relation 21068. Up to 5601 conditions per place. [2024-02-20 12:23:04,759 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 433 selfloop transitions, 74 changer transitions 386/896 dead transitions. [2024-02-20 12:23:04,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 896 transitions, 14231 flow [2024-02-20 12:23:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:23:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:23:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-02-20 12:23:04,762 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-02-20 12:23:04,762 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2024-02-20 12:23:04,762 INFO L507 AbstractCegarLoop]: Abstraction has has 109 places, 896 transitions, 14231 flow [2024-02-20 12:23:04,763 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:04,763 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:04,763 INFO L234 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] [2024-02-20 12:23:04,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-02-20 12:23:04,975 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:04,976 INFO L432 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)] === [2024-02-20 12:23:04,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 410430950, now seen corresponding path program 7 times [2024-02-20 12:23:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:04,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430771364] [2024-02-20 12:23:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:23:05,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430771364] [2024-02-20 12:23:05,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430771364] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584627497] [2024-02-20 12:23:05,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:23:05,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:05,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:05,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:23:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:05,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 12:23:05,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:06,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:23:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584627497] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:23:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-02-20 12:23:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294009202] [2024-02-20 12:23:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:06,116 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:23:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:23:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:06,124 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:06,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 896 transitions, 14231 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:06,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:06,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:06,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:07,460 INFO L124 PetriNetUnfolderBase]: 4716/8165 cut-off events. [2024-02-20 12:23:07,460 INFO L125 PetriNetUnfolderBase]: For 8038/8104 co-relation queries the response was YES. [2024-02-20 12:23:07,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67107 conditions, 8165 events. 4716/8165 cut-off events. For 8038/8104 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 57953 event pairs, 660 based on Foata normal form. 10/8168 useless extension candidates. Maximal degree in co-relation 25479. Up to 6165 conditions per place. [2024-02-20 12:23:07,517 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 473 selfloop transitions, 74 changer transitions 443/993 dead transitions. [2024-02-20 12:23:07,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 993 transitions, 17790 flow [2024-02-20 12:23:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:23:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:23:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-02-20 12:23:07,520 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-02-20 12:23:07,521 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-02-20 12:23:07,521 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 993 transitions, 17790 flow [2024-02-20 12:23:07,522 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:07,522 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:07,522 INFO L234 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] [2024-02-20 12:23:07,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:07,735 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:07,736 INFO L432 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)] === [2024-02-20 12:23:07,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 354977254, now seen corresponding path program 8 times [2024-02-20 12:23:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884074170] [2024-02-20 12:23:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:23:08,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:08,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884074170] [2024-02-20 12:23:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884074170] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:08,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99862011] [2024-02-20 12:23:08,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:23:08,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:08,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:08,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:23:08,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 12:23:08,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:08,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:23:08,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:09,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:23:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99862011] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:09,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:23:09,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-02-20 12:23:09,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379126724] [2024-02-20 12:23:09,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:09,129 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:23:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:23:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:09,135 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:09,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 993 transitions, 17790 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:09,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:10,544 INFO L124 PetriNetUnfolderBase]: 4852/8421 cut-off events. [2024-02-20 12:23:10,544 INFO L125 PetriNetUnfolderBase]: For 11090/11208 co-relation queries the response was YES. [2024-02-20 12:23:10,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77269 conditions, 8421 events. 4852/8421 cut-off events. For 11090/11208 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59970 event pairs, 668 based on Foata normal form. 2/8416 useless extension candidates. Maximal degree in co-relation 28870. Up to 6411 conditions per place. [2024-02-20 12:23:10,606 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 480 selfloop transitions, 70 changer transitions 485/1038 dead transitions. [2024-02-20 12:23:10,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 1038 transitions, 20703 flow [2024-02-20 12:23:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:23:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:23:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-02-20 12:23:10,608 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-02-20 12:23:10,608 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2024-02-20 12:23:10,608 INFO L507 AbstractCegarLoop]: Abstraction has has 123 places, 1038 transitions, 20703 flow [2024-02-20 12:23:10,608 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:10,609 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:10,609 INFO L234 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] [2024-02-20 12:23:10,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:10,820 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:10,821 INFO L432 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)] === [2024-02-20 12:23:10,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1815565079, now seen corresponding path program 1 times [2024-02-20 12:23:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922598597] [2024-02-20 12:23:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:10,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:10,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922598597] [2024-02-20 12:23:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922598597] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:10,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513984101] [2024-02-20 12:23:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:10,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:10,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:10,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:10,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:23:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:11,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:23:11,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:11,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513984101] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:11,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:23:11,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-02-20 12:23:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633897015] [2024-02-20 12:23:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:11,065 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:23:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:23:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:23:11,068 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:11,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 1038 transitions, 20703 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:11,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:11,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:11,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:12,852 INFO L124 PetriNetUnfolderBase]: 7194/11634 cut-off events. [2024-02-20 12:23:12,853 INFO L125 PetriNetUnfolderBase]: For 89456/89548 co-relation queries the response was YES. [2024-02-20 12:23:12,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111793 conditions, 11634 events. 7194/11634 cut-off events. For 89456/89548 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 78016 event pairs, 334 based on Foata normal form. 170/11797 useless extension candidates. Maximal degree in co-relation 42373. Up to 8326 conditions per place. [2024-02-20 12:23:12,945 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 853 selfloop transitions, 29 changer transitions 652/1606 dead transitions. [2024-02-20 12:23:12,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 1606 transitions, 35409 flow [2024-02-20 12:23:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:23:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:23:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-02-20 12:23:12,946 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-02-20 12:23:12,947 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2024-02-20 12:23:12,947 INFO L507 AbstractCegarLoop]: Abstraction has has 126 places, 1606 transitions, 35409 flow [2024-02-20 12:23:12,947 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:12,947 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:12,947 INFO L234 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] [2024-02-20 12:23:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:13,159 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-20 12:23:13,159 INFO L432 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)] === [2024-02-20 12:23:13,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1880058585, now seen corresponding path program 2 times [2024-02-20 12:23:13,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:13,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999971368] [2024-02-20 12:23:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:13,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999971368] [2024-02-20 12:23:13,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999971368] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:13,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:23:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:23:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004977973] [2024-02-20 12:23:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:13,228 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:23:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:23:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:23:13,234 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:13,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 1606 transitions, 35409 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:13,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:13,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:16,171 INFO L124 PetriNetUnfolderBase]: 8028/12950 cut-off events. [2024-02-20 12:23:16,172 INFO L125 PetriNetUnfolderBase]: For 100365/101001 co-relation queries the response was YES. [2024-02-20 12:23:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137793 conditions, 12950 events. 8028/12950 cut-off events. For 100365/101001 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 87922 event pairs, 324 based on Foata normal form. 48/12984 useless extension candidates. Maximal degree in co-relation 53158. Up to 9391 conditions per place. [2024-02-20 12:23:16,270 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 1114 selfloop transitions, 128 changer transitions 927/2241 dead transitions. [2024-02-20 12:23:16,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 2241 transitions, 53920 flow [2024-02-20 12:23:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:23:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:23:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-02-20 12:23:16,271 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 12:23:16,272 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2024-02-20 12:23:16,272 INFO L507 AbstractCegarLoop]: Abstraction has has 130 places, 2241 transitions, 53920 flow [2024-02-20 12:23:16,272 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:16,272 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:16,272 INFO L234 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] [2024-02-20 12:23:16,272 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-20 12:23:16,273 INFO L432 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)] === [2024-02-20 12:23:16,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2008029149, now seen corresponding path program 3 times [2024-02-20 12:23:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603899492] [2024-02-20 12:23:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:16,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603899492] [2024-02-20 12:23:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603899492] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:16,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:23:16,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:23:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121333415] [2024-02-20 12:23:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:16,339 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:23:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:23:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:23:16,344 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:16,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 2241 transitions, 53920 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:16,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:16,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:16,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:20,664 INFO L124 PetriNetUnfolderBase]: 8562/13988 cut-off events. [2024-02-20 12:23:20,665 INFO L125 PetriNetUnfolderBase]: For 120210/121124 co-relation queries the response was YES. [2024-02-20 12:23:20,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163958 conditions, 13988 events. 8562/13988 cut-off events. For 120210/121124 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 97178 event pairs, 380 based on Foata normal form. 204/14178 useless extension candidates. Maximal degree in co-relation 62839. Up to 10430 conditions per place. [2024-02-20 12:23:20,777 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 1378 selfloop transitions, 84 changer transitions 1269/2798 dead transitions. [2024-02-20 12:23:20,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 2798 transitions, 73066 flow [2024-02-20 12:23:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:23:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:23:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-02-20 12:23:20,779 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-02-20 12:23:20,780 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 95 predicate places. [2024-02-20 12:23:20,780 INFO L507 AbstractCegarLoop]: Abstraction has has 134 places, 2798 transitions, 73066 flow [2024-02-20 12:23:20,780 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:20,780 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:20,780 INFO L234 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] [2024-02-20 12:23:20,780 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-20 12:23:20,781 INFO L432 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)] === [2024-02-20 12:23:20,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 278147126, now seen corresponding path program 1 times [2024-02-20 12:23:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674060949] [2024-02-20 12:23:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:20,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674060949] [2024-02-20 12:23:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674060949] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:20,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:23:20,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:23:20,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543654372] [2024-02-20 12:23:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:20,860 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:23:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:23:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:23:20,862 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:20,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 2798 transitions, 73066 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:20,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:20,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:20,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:26,315 INFO L124 PetriNetUnfolderBase]: 8300/13731 cut-off events. [2024-02-20 12:23:26,315 INFO L125 PetriNetUnfolderBase]: For 107094/108248 co-relation queries the response was YES. [2024-02-20 12:23:26,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175857 conditions, 13731 events. 8300/13731 cut-off events. For 107094/108248 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 96190 event pairs, 412 based on Foata normal form. 336/14039 useless extension candidates. Maximal degree in co-relation 67160. Up to 10518 conditions per place. [2024-02-20 12:23:26,441 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 1211 selfloop transitions, 105 changer transitions 1442/2820 dead transitions. [2024-02-20 12:23:26,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 2820 transitions, 79191 flow [2024-02-20 12:23:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:23:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:23:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-02-20 12:23:26,443 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-02-20 12:23:26,443 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 99 predicate places. [2024-02-20 12:23:26,443 INFO L507 AbstractCegarLoop]: Abstraction has has 138 places, 2820 transitions, 79191 flow [2024-02-20 12:23:26,443 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:26,444 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:26,444 INFO L234 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] [2024-02-20 12:23:26,444 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-20 12:23:26,444 INFO L432 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)] === [2024-02-20 12:23:26,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1844637580, now seen corresponding path program 2 times [2024-02-20 12:23:26,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:26,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438302764] [2024-02-20 12:23:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:26,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:26,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438302764] [2024-02-20 12:23:26,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438302764] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:26,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:23:26,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:23:26,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651855378] [2024-02-20 12:23:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:26,516 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:23:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:23:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:23:26,519 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:26,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 2820 transitions, 79191 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:26,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:26,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:26,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:32,613 INFO L124 PetriNetUnfolderBase]: 7901/13099 cut-off events. [2024-02-20 12:23:32,613 INFO L125 PetriNetUnfolderBase]: For 119990/121402 co-relation queries the response was YES. [2024-02-20 12:23:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179573 conditions, 13099 events. 7901/13099 cut-off events. For 119990/121402 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91172 event pairs, 412 based on Foata normal form. 96/13174 useless extension candidates. Maximal degree in co-relation 68167. Up to 10027 conditions per place. [2024-02-20 12:23:32,732 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1104 selfloop transitions, 114 changer transitions 1398/2673 dead transitions. [2024-02-20 12:23:32,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 2673 transitions, 80269 flow [2024-02-20 12:23:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:23:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:23:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-02-20 12:23:32,734 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 12:23:32,734 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2024-02-20 12:23:32,734 INFO L507 AbstractCegarLoop]: Abstraction has has 142 places, 2673 transitions, 80269 flow [2024-02-20 12:23:32,734 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:32,734 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:32,735 INFO L234 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] [2024-02-20 12:23:32,735 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-20 12:23:32,735 INFO L432 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)] === [2024-02-20 12:23:32,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1861508087, now seen corresponding path program 4 times [2024-02-20 12:23:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:32,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018586146] [2024-02-20 12:23:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018586146] [2024-02-20 12:23:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018586146] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:32,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928782438] [2024-02-20 12:23:32,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:23:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:32,833 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:32,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:23:32,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:23:32,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:32,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:23:32,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:32,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:32,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928782438] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:32,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:32,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-02-20 12:23:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213028350] [2024-02-20 12:23:32,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:32,997 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:23:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:32,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:23:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-02-20 12:23:33,004 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:33,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 2673 transitions, 80269 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:33,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:33,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:33,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:39,564 INFO L124 PetriNetUnfolderBase]: 8827/14579 cut-off events. [2024-02-20 12:23:39,564 INFO L125 PetriNetUnfolderBase]: For 166629/168305 co-relation queries the response was YES. [2024-02-20 12:23:39,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208551 conditions, 14579 events. 8827/14579 cut-off events. For 166629/168305 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 103187 event pairs, 396 based on Foata normal form. 334/14892 useless extension candidates. Maximal degree in co-relation 80293. Up to 10654 conditions per place. [2024-02-20 12:23:39,700 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1107 selfloop transitions, 187 changer transitions 1444/2789 dead transitions. [2024-02-20 12:23:39,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 2789 transitions, 89179 flow [2024-02-20 12:23:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:23:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:23:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-02-20 12:23:39,702 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-02-20 12:23:39,702 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 112 predicate places. [2024-02-20 12:23:39,702 INFO L507 AbstractCegarLoop]: Abstraction has has 151 places, 2789 transitions, 89179 flow [2024-02-20 12:23:39,703 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:39,703 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:39,703 INFO L234 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] [2024-02-20 12:23:39,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:39,912 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:23:39,913 INFO L432 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)] === [2024-02-20 12:23:39,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash -687551330, now seen corresponding path program 3 times [2024-02-20 12:23:39,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:39,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801050838] [2024-02-20 12:23:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:39,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:40,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801050838] [2024-02-20 12:23:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801050838] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630297458] [2024-02-20 12:23:40,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:23:40,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:40,002 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:40,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 12:23:40,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:23:40,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:40,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:23:40,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:40,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630297458] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:40,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-02-20 12:23:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496716518] [2024-02-20 12:23:40,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:40,162 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 12:23:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 12:23:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:23:40,168 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:40,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 2789 transitions, 89179 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:40,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:40,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:40,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:47,669 INFO L124 PetriNetUnfolderBase]: 9097/15017 cut-off events. [2024-02-20 12:23:47,669 INFO L125 PetriNetUnfolderBase]: For 193231/194565 co-relation queries the response was YES. [2024-02-20 12:23:47,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227216 conditions, 15017 events. 9097/15017 cut-off events. For 193231/194565 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 106912 event pairs, 324 based on Foata normal form. 76/15044 useless extension candidates. Maximal degree in co-relation 87807. Up to 10803 conditions per place. [2024-02-20 12:23:47,817 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1425 selfloop transitions, 175 changer transitions 1585/3236 dead transitions. [2024-02-20 12:23:47,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 3236 transitions, 109976 flow [2024-02-20 12:23:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:23:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:23:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-02-20 12:23:47,819 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-02-20 12:23:47,819 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 118 predicate places. [2024-02-20 12:23:47,819 INFO L507 AbstractCegarLoop]: Abstraction has has 157 places, 3236 transitions, 109976 flow [2024-02-20 12:23:47,819 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:47,819 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:47,820 INFO L234 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] [2024-02-20 12:23:47,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-02-20 12:23:48,020 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 12:23:48,020 INFO L432 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)] === [2024-02-20 12:23:48,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1553802028, now seen corresponding path program 4 times [2024-02-20 12:23:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924714566] [2024-02-20 12:23:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:48,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924714566] [2024-02-20 12:23:48,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924714566] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:48,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402000569] [2024-02-20 12:23:48,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:23:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:48,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:48,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 12:23:48,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:23:48,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:48,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:23:48,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:48,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402000569] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:48,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:23:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 8 [2024-02-20 12:23:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480399575] [2024-02-20 12:23:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:48,426 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:23:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:23:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-02-20 12:23:48,429 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:48,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 3236 transitions, 109976 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:48,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:48,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:48,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:57,225 INFO L124 PetriNetUnfolderBase]: 8872/14602 cut-off events. [2024-02-20 12:23:57,225 INFO L125 PetriNetUnfolderBase]: For 221217/222467 co-relation queries the response was YES. [2024-02-20 12:23:57,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231823 conditions, 14602 events. 8872/14602 cut-off events. For 221217/222467 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 103406 event pairs, 276 based on Foata normal form. 72/14625 useless extension candidates. Maximal degree in co-relation 91258. Up to 10249 conditions per place. [2024-02-20 12:23:57,370 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 1459 selfloop transitions, 141 changer transitions 1610/3261 dead transitions. [2024-02-20 12:23:57,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 3261 transitions, 117168 flow [2024-02-20 12:23:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:23:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:23:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-02-20 12:23:57,371 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-02-20 12:23:57,372 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 121 predicate places. [2024-02-20 12:23:57,372 INFO L507 AbstractCegarLoop]: Abstraction has has 160 places, 3261 transitions, 117168 flow [2024-02-20 12:23:57,372 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:57,372 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:57,372 INFO L234 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] [2024-02-20 12:23:57,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-20 12:23:57,576 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 12:23:57,577 INFO L432 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)] === [2024-02-20 12:23:57,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 638697467, now seen corresponding path program 5 times [2024-02-20 12:23:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036886819] [2024-02-20 12:23:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:57,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:57,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:57,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036886819] [2024-02-20 12:23:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036886819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:23:57,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:23:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 12:23:57,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510715014] [2024-02-20 12:23:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:23:57,671 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:23:57,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:23:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:23:57,677 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:23:57,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 3261 transitions, 117168 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:57,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:57,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:23:57,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:06,159 INFO L124 PetriNetUnfolderBase]: 8683/14308 cut-off events. [2024-02-20 12:24:06,159 INFO L125 PetriNetUnfolderBase]: For 243533/244937 co-relation queries the response was YES. [2024-02-20 12:24:06,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239775 conditions, 14308 events. 8683/14308 cut-off events. For 243533/244937 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 101118 event pairs, 276 based on Foata normal form. 76/14335 useless extension candidates. Maximal degree in co-relation 94175. Up to 10022 conditions per place. [2024-02-20 12:24:06,311 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1410 selfloop transitions, 123 changer transitions 1580/3162 dead transitions. [2024-02-20 12:24:06,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 3162 transitions, 119787 flow [2024-02-20 12:24:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:24:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:24:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-20 12:24:06,313 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-02-20 12:24:06,313 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-02-20 12:24:06,313 INFO L507 AbstractCegarLoop]: Abstraction has has 164 places, 3162 transitions, 119787 flow [2024-02-20 12:24:06,313 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:06,313 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:06,313 INFO L234 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] [2024-02-20 12:24:06,314 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-20 12:24:06,314 INFO L432 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)] === [2024-02-20 12:24:06,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 616074313, now seen corresponding path program 6 times [2024-02-20 12:24:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87359714] [2024-02-20 12:24:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:06,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87359714] [2024-02-20 12:24:06,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87359714] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836165473] [2024-02-20 12:24:06,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:24:06,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:06,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 12:24:06,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:24:06,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:06,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:24:06,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:06,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:06,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836165473] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:06,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-02-20 12:24:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906630665] [2024-02-20 12:24:06,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:06,572 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 12:24:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 12:24:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:24:06,580 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:24:06,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 3162 transitions, 119787 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:06,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:06,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:24:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:15,270 INFO L124 PetriNetUnfolderBase]: 8283/13632 cut-off events. [2024-02-20 12:24:15,270 INFO L125 PetriNetUnfolderBase]: For 269387/270973 co-relation queries the response was YES. [2024-02-20 12:24:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238640 conditions, 13632 events. 8283/13632 cut-off events. For 269387/270973 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 95398 event pairs, 212 based on Foata normal form. 130/13713 useless extension candidates. Maximal degree in co-relation 94439. Up to 9317 conditions per place. [2024-02-20 12:24:15,427 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1288 selfloop transitions, 152 changer transitions 1554/3041 dead transitions. [2024-02-20 12:24:15,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 3041 transitions, 121097 flow [2024-02-20 12:24:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:24:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:24:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-02-20 12:24:15,428 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-02-20 12:24:15,429 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-02-20 12:24:15,429 INFO L507 AbstractCegarLoop]: Abstraction has has 170 places, 3041 transitions, 121097 flow [2024-02-20 12:24:15,429 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:15,429 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:15,429 INFO L234 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, 1] [2024-02-20 12:24:15,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 12:24:15,641 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:15,642 INFO L432 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)] === [2024-02-20 12:24:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1608064870, now seen corresponding path program 9 times [2024-02-20 12:24:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104955902] [2024-02-20 12:24:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104955902] [2024-02-20 12:24:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104955902] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001665215] [2024-02-20 12:24:18,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:24:18,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:18,375 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:18,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 12:24:18,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 12:24:18,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:18,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:24:18,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-20 12:24:18,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:24:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001665215] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:24:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 12:24:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-02-20 12:24:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557364990] [2024-02-20 12:24:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:24:18,668 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 12:24:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 12:24:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:24:18,673 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:24:18,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 3041 transitions, 121097 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:18,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:18,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:24:18,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:26,942 INFO L124 PetriNetUnfolderBase]: 8264/13614 cut-off events. [2024-02-20 12:24:26,943 INFO L125 PetriNetUnfolderBase]: For 282331/284037 co-relation queries the response was YES. [2024-02-20 12:24:26,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250037 conditions, 13614 events. 8264/13614 cut-off events. For 282331/284037 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 95246 event pairs, 208 based on Foata normal form. 109/13674 useless extension candidates. Maximal degree in co-relation 99073. Up to 9311 conditions per place. [2024-02-20 12:24:27,083 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1285 selfloop transitions, 113 changer transitions 1603/3047 dead transitions. [2024-02-20 12:24:27,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 3047 transitions, 127345 flow [2024-02-20 12:24:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:24:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:24:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-02-20 12:24:27,084 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 12:24:27,084 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-02-20 12:24:27,085 INFO L507 AbstractCegarLoop]: Abstraction has has 177 places, 3047 transitions, 127345 flow [2024-02-20 12:24:27,085 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:27,085 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:27,085 INFO L234 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, 1] [2024-02-20 12:24:27,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 12:24:27,297 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-02-20 12:24:27,297 INFO L432 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)] === [2024-02-20 12:24:27,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash 791109021, now seen corresponding path program 1 times [2024-02-20 12:24:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799697188] [2024-02-20 12:24:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:29,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:29,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799697188] [2024-02-20 12:24:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799697188] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:29,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067909205] [2024-02-20 12:24:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:29,515 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:29,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 12:24:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:29,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2024-02-20 12:24:29,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:24:29,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:30,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:24:30,012 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 [2024-02-20 12:24:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-20 12:24:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067909205] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:30,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:30,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 27 [2024-02-20 12:24:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034662609] [2024-02-20 12:24:30,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:30,520 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-20 12:24:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-20 12:24:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2024-02-20 12:24:30,578 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:24:30,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 3047 transitions, 127345 flow. Second operand has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:30,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:30,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:24:30,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:46,280 INFO L124 PetriNetUnfolderBase]: 11709/18852 cut-off events. [2024-02-20 12:24:46,280 INFO L125 PetriNetUnfolderBase]: For 442337/446013 co-relation queries the response was YES. [2024-02-20 12:24:46,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360867 conditions, 18852 events. 11709/18852 cut-off events. For 442337/446013 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 132234 event pairs, 206 based on Foata normal form. 60/18856 useless extension candidates. Maximal degree in co-relation 144144. Up to 13107 conditions per place. [2024-02-20 12:24:46,494 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 1768 selfloop transitions, 241 changer transitions 1934/3989 dead transitions. [2024-02-20 12:24:46,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 3989 transitions, 174019 flow [2024-02-20 12:24:46,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-02-20 12:24:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-02-20 12:24:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 631 transitions. [2024-02-20 12:24:46,496 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4494301994301994 [2024-02-20 12:24:46,497 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 176 predicate places. [2024-02-20 12:24:46,497 INFO L507 AbstractCegarLoop]: Abstraction has has 215 places, 3989 transitions, 174019 flow [2024-02-20 12:24:46,497 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:46,497 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:46,497 INFO L234 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, 1] [2024-02-20 12:24:46,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-02-20 12:24:46,698 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:46,698 INFO L432 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)] === [2024-02-20 12:24:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash -962463869, now seen corresponding path program 2 times [2024-02-20 12:24:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:46,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116943482] [2024-02-20 12:24:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:47,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116943482] [2024-02-20 12:24:47,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116943482] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385741049] [2024-02-20 12:24:47,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:24:47,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:47,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:47,961 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:47,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 12:24:48,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:24:48,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:48,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 35 conjunts are in the unsatisfiable core [2024-02-20 12:24:48,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:48,161 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 [2024-02-20 12:24:48,547 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-02-20 12:24:48,547 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 [2024-02-20 12:24:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:48,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:49,468 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 116 treesize of output 104 [2024-02-20 12:24:49,514 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-02-20 12:24:49,515 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 207 treesize of output 167 [2024-02-20 12:24:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385741049] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:50,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:50,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-02-20 12:24:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580644909] [2024-02-20 12:24:50,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:50,875 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-02-20 12:24:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-02-20 12:24:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2024-02-20 12:24:50,907 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:24:50,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 3989 transitions, 174019 flow. Second operand has 35 states, 35 states have (on average 8.571428571428571) internal successors, (300), 35 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:50,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:50,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:24:50,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:20,871 INFO L124 PetriNetUnfolderBase]: 15124/24274 cut-off events. [2024-02-20 12:25:20,872 INFO L125 PetriNetUnfolderBase]: For 631411/636259 co-relation queries the response was YES. [2024-02-20 12:25:20,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483600 conditions, 24274 events. 15124/24274 cut-off events. For 631411/636259 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 175507 event pairs, 214 based on Foata normal form. 156/24402 useless extension candidates. Maximal degree in co-relation 193317. Up to 17705 conditions per place. [2024-02-20 12:25:21,194 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 2336 selfloop transitions, 126 changer transitions 2576/5084 dead transitions. [2024-02-20 12:25:21,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 5084 transitions, 231598 flow [2024-02-20 12:25:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-02-20 12:25:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-02-20 12:25:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 886 transitions. [2024-02-20 12:25:21,196 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.439484126984127 [2024-02-20 12:25:21,196 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2024-02-20 12:25:21,197 INFO L507 AbstractCegarLoop]: Abstraction has has 270 places, 5084 transitions, 231598 flow [2024-02-20 12:25:21,197 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.571428571428571) internal successors, (300), 35 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:25:21,197 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:21,197 INFO L234 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, 1] [2024-02-20 12:25:21,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-20 12:25:21,404 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:21,404 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:25:21,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1297888035, now seen corresponding path program 3 times [2024-02-20 12:25:21,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057886158] [2024-02-20 12:25:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:25:22,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:22,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057886158] [2024-02-20 12:25:22,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057886158] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:22,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042896455] [2024-02-20 12:25:22,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:25:22,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:22,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:22,596 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:25:22,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:25:22,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:25:22,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:22,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:25:22,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:22,801 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 [2024-02-20 12:25:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:25:23,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:24,032 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 [2024-02-20 12:25:24,064 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-02-20 12:25:24,065 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 171 treesize of output 142 [2024-02-20 12:25:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:25:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042896455] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:25:24,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:25:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-02-20 12:25:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29321328] [2024-02-20 12:25:24,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:25:24,287 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-02-20 12:25:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:25:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-02-20 12:25:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2024-02-20 12:25:24,307 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:25:24,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 5084 transitions, 231598 flow. Second operand has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:25:24,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:25:24,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:25:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:26:14,121 INFO L124 PetriNetUnfolderBase]: 18309/29637 cut-off events. [2024-02-20 12:26:14,121 INFO L125 PetriNetUnfolderBase]: For 814088/819944 co-relation queries the response was YES. [2024-02-20 12:26:14,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616071 conditions, 29637 events. 18309/29637 cut-off events. For 814088/819944 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 221741 event pairs, 186 based on Foata normal form. 244/29867 useless extension candidates. Maximal degree in co-relation 243114. Up to 22166 conditions per place. [2024-02-20 12:26:14,648 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 2882 selfloop transitions, 259 changer transitions 2978/6165 dead transitions. [2024-02-20 12:26:14,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 6165 transitions, 293333 flow [2024-02-20 12:26:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-02-20 12:26:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-02-20 12:26:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1013 transitions. [2024-02-20 12:26:14,651 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44664902998236333 [2024-02-20 12:26:14,652 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 293 predicate places. [2024-02-20 12:26:14,652 INFO L507 AbstractCegarLoop]: Abstraction has has 332 places, 6165 transitions, 293333 flow [2024-02-20 12:26:14,652 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:26:14,652 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:26:14,652 INFO L234 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, 1] [2024-02-20 12:26:14,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-20 12:26:14,860 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-20 12:26:14,861 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:26:14,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:26:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash 518824835, now seen corresponding path program 4 times [2024-02-20 12:26:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:26:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514201721] [2024-02-20 12:26:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:26:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:26:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:26:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:26:16,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:26:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514201721] [2024-02-20 12:26:16,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514201721] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:26:16,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312556338] [2024-02-20 12:26:16,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:26:16,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:26:16,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:26:16,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:26:16,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:26:16,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:26:16,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:26:16,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:26:16,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:26:16,710 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 [2024-02-20 12:26:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:26:17,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:26:17,911 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 [2024-02-20 12:26:17,940 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-02-20 12:26:17,941 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 [2024-02-20 12:26:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:26:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312556338] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:26:18,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:26:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-02-20 12:26:18,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080420927] [2024-02-20 12:26:18,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:26:18,265 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-02-20 12:26:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:26:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-02-20 12:26:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2024-02-20 12:26:18,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:26:18,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 6165 transitions, 293333 flow. Second operand has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:26:18,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:26:18,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:26:18,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:27:20,356 INFO L124 PetriNetUnfolderBase]: 19800/32057 cut-off events. [2024-02-20 12:27:20,357 INFO L125 PetriNetUnfolderBase]: For 959744/966832 co-relation queries the response was YES. [2024-02-20 12:27:20,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695258 conditions, 32057 events. 19800/32057 cut-off events. For 959744/966832 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 243169 event pairs, 136 based on Foata normal form. 363/32406 useless extension candidates. Maximal degree in co-relation 272319. Up to 24022 conditions per place. [2024-02-20 12:27:20,799 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 3136 selfloop transitions, 326 changer transitions 3249/6757 dead transitions. [2024-02-20 12:27:20,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 6757 transitions, 334961 flow [2024-02-20 12:27:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-02-20 12:27:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-02-20 12:27:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 1241 transitions. [2024-02-20 12:27:20,802 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4363572433192686 [2024-02-20 12:27:20,802 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 371 predicate places. [2024-02-20 12:27:20,802 INFO L507 AbstractCegarLoop]: Abstraction has has 410 places, 6757 transitions, 334961 flow [2024-02-20 12:27:20,803 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:27:20,803 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:27:20,803 INFO L234 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, 1] [2024-02-20 12:27:20,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-20 12:27:21,011 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:21,013 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:27:21,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:27:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1943507069, now seen corresponding path program 5 times [2024-02-20 12:27:21,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:27:21,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999360858] [2024-02-20 12:27:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:27:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:27:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:27:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:27:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:27:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999360858] [2024-02-20 12:27:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999360858] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:27:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423286237] [2024-02-20 12:27:22,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:27:22,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:27:22,625 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:27:22,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:27:22,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:27:22,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:27:22,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:27:22,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:27:22,809 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 [2024-02-20 12:27:23,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:27:23,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 40 [2024-02-20 12:27:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:27:23,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:27:23,897 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 [2024-02-20 12:27:23,925 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-02-20 12:27:23,925 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 163 treesize of output 134 [2024-02-20 12:27:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:27:24,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423286237] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:27:24,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:27:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-02-20 12:27:24,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761793181] [2024-02-20 12:27:24,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:27:24,145 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-02-20 12:27:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:27:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-02-20 12:27:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2024-02-20 12:27:24,162 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:27:24,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 6757 transitions, 334961 flow. Second operand has 35 states, 35 states have (on average 8.571428571428571) internal successors, (300), 35 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:27:24,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:27:24,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:27:24,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:28:49,598 INFO L124 PetriNetUnfolderBase]: 21096/34353 cut-off events. [2024-02-20 12:28:49,599 INFO L125 PetriNetUnfolderBase]: For 1106763/1113357 co-relation queries the response was YES. [2024-02-20 12:28:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775367 conditions, 34353 events. 21096/34353 cut-off events. For 1106763/1113357 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 265035 event pairs, 146 based on Foata normal form. 182/34521 useless extension candidates. Maximal degree in co-relation 300338. Up to 25819 conditions per place. [2024-02-20 12:28:50,186 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 3405 selfloop transitions, 324 changer transitions 3565/7340 dead transitions. [2024-02-20 12:28:50,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 7340 transitions, 378523 flow [2024-02-20 12:28:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-02-20 12:28:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-02-20 12:28:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 767 transitions. [2024-02-20 12:28:50,188 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43480725623582767 [2024-02-20 12:28:50,189 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 419 predicate places. [2024-02-20 12:28:50,189 INFO L507 AbstractCegarLoop]: Abstraction has has 458 places, 7340 transitions, 378523 flow [2024-02-20 12:28:50,189 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.571428571428571) internal successors, (300), 35 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:28:50,189 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:28:50,190 INFO L234 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, 1] [2024-02-20 12:28:50,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 12:28:50,402 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:28:50,403 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:28:50,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:28:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash -925271509, now seen corresponding path program 6 times [2024-02-20 12:28:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:28:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186275387] [2024-02-20 12:28:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:28:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:28:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:28:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:28:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:28:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186275387] [2024-02-20 12:28:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186275387] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:28:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122909865] [2024-02-20 12:28:51,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:28:51,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:28:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:28:51,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:28:51,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:28:51,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:28:51,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:28:51,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:28:51,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:28:51,973 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 [2024-02-20 12:28:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:28:52,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:28:57,409 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 80 treesize of output 72 [2024-02-20 12:28:57,443 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-02-20 12:28:57,444 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 169 treesize of output 140 [2024-02-20 12:28:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:28:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122909865] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:28:57,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:28:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-02-20 12:28:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500141112] [2024-02-20 12:28:57,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:28:57,784 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-02-20 12:28:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:28:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-02-20 12:28:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1180, Unknown=1, NotChecked=0, Total=1406 [2024-02-20 12:28:57,788 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:28:57,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 7340 transitions, 378523 flow. Second operand has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:28:57,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:28:57,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:28:57,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:29:32,122 WARN L293 SmtUtils]: Spent 25.86s on a formula simplification. DAG size of input: 132 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-02-20 12:31:15,348 INFO L124 PetriNetUnfolderBase]: 22719/37158 cut-off events. [2024-02-20 12:31:15,348 INFO L125 PetriNetUnfolderBase]: For 1293178/1300660 co-relation queries the response was YES. [2024-02-20 12:31:15,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874111 conditions, 37158 events. 22719/37158 cut-off events. For 1293178/1300660 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 291896 event pairs, 146 based on Foata normal form. 222/37366 useless extension candidates. Maximal degree in co-relation 332834. Up to 28317 conditions per place. [2024-02-20 12:31:15,995 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 3775 selfloop transitions, 343 changer transitions 3827/7991 dead transitions. [2024-02-20 12:31:15,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 7991 transitions, 428088 flow [2024-02-20 12:31:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-02-20 12:31:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-02-20 12:31:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 1037 transitions. [2024-02-20 12:31:15,998 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4364478114478115 [2024-02-20 12:31:15,998 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 484 predicate places. [2024-02-20 12:31:15,998 INFO L507 AbstractCegarLoop]: Abstraction has has 523 places, 7991 transitions, 428088 flow [2024-02-20 12:31:15,999 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:31:15,999 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:31:15,999 INFO L234 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, 1] [2024-02-20 12:31:16,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 12:31:16,212 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:31:16,212 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:31:16,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:31:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1126317967, now seen corresponding path program 7 times [2024-02-20 12:31:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:31:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35201960] [2024-02-20 12:31:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:31:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:31:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:31:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:31:17,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:31:17,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35201960] [2024-02-20 12:31:17,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35201960] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:31:17,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946260678] [2024-02-20 12:31:17,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:31:17,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:31:17,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:31:17,473 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:31:17,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:31:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:31:17,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2024-02-20 12:31:17,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:31:17,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:31:17,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 40 [2024-02-20 12:31:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:31:17,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:31:17,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:31:17,984 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 83 treesize of output 68 [2024-02-20 12:31:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:31:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946260678] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:31:30,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:31:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 26 [2024-02-20 12:31:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157430471] [2024-02-20 12:31:30,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:31:30,864 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-02-20 12:31:30,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:31:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-02-20 12:31:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-02-20 12:31:30,889 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:31:30,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 7991 transitions, 428088 flow. Second operand has 27 states, 27 states have (on average 8.777777777777779) internal successors, (237), 27 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:31:30,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:31:30,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:31:30,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:28,523 INFO L124 PetriNetUnfolderBase]: 23251/38086 cut-off events. [2024-02-20 12:33:28,523 INFO L125 PetriNetUnfolderBase]: For 1434402/1442522 co-relation queries the response was YES. [2024-02-20 12:33:28,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930657 conditions, 38086 events. 23251/38086 cut-off events. For 1434402/1442522 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 301117 event pairs, 156 based on Foata normal form. 124/38196 useless extension candidates. Maximal degree in co-relation 353861. Up to 29125 conditions per place. [2024-02-20 12:33:29,191 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 3808 selfloop transitions, 383 changer transitions 3921/8158 dead transitions. [2024-02-20 12:33:29,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 8158 transitions, 453230 flow [2024-02-20 12:33:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 12:33:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 12:33:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 532 transitions. [2024-02-20 12:33:29,193 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2024-02-20 12:33:29,194 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 517 predicate places. [2024-02-20 12:33:29,194 INFO L507 AbstractCegarLoop]: Abstraction has has 556 places, 8158 transitions, 453230 flow [2024-02-20 12:33:29,194 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.777777777777779) internal successors, (237), 27 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:29,194 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:29,194 INFO L234 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, 1] [2024-02-20 12:33:29,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-20 12:33:29,397 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 12:33:29,397 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:33:29,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 347473939, now seen corresponding path program 8 times [2024-02-20 12:33:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010366318] [2024-02-20 12:33:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010366318] [2024-02-20 12:33:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010366318] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:32,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268959151] [2024-02-20 12:33:32,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:33:32,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:32,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:32,148 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:32,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 12:33:32,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:33:32,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:32,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 12:33:32,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:33:32,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:32,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:33:32,995 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 60 treesize of output 62 [2024-02-20 12:33:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:33:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268959151] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:39,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2024-02-20 12:33:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518269909] [2024-02-20 12:33:39,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:39,924 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 12:33:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 12:33:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2024-02-20 12:33:39,930 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:33:39,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 8158 transitions, 453230 flow. Second operand has 29 states, 29 states have (on average 8.586206896551724) internal successors, (249), 29 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:39,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:39,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:33:39,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:38,141 INFO L124 PetriNetUnfolderBase]: 24041/39456 cut-off events. [2024-02-20 12:35:38,141 INFO L125 PetriNetUnfolderBase]: For 1590043/1598917 co-relation queries the response was YES. [2024-02-20 12:35:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999937 conditions, 39456 events. 24041/39456 cut-off events. For 1590043/1598917 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 314092 event pairs, 166 based on Foata normal form. 110/39552 useless extension candidates. Maximal degree in co-relation 380298. Up to 30155 conditions per place. [2024-02-20 12:35:38,862 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 3948 selfloop transitions, 393 changer transitions 4029/8416 dead transitions. [2024-02-20 12:35:38,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 8416 transitions, 484164 flow [2024-02-20 12:35:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-02-20 12:35:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-02-20 12:35:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 614 transitions. [2024-02-20 12:35:38,864 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4373219373219373 [2024-02-20 12:35:38,868 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 555 predicate places. [2024-02-20 12:35:38,869 INFO L507 AbstractCegarLoop]: Abstraction has has 594 places, 8416 transitions, 484164 flow [2024-02-20 12:35:38,869 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.586206896551724) internal successors, (249), 29 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:38,869 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:38,869 INFO L234 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, 1] [2024-02-20 12:35:38,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:39,082 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-20 12:35:39,083 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:35:39,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1019259875, now seen corresponding path program 9 times [2024-02-20 12:35:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:35:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075714649] [2024-02-20 12:35:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:35:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:40,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:35:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075714649] [2024-02-20 12:35:40,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075714649] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:35:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440054460] [2024-02-20 12:35:40,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:35:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:40,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:35:40,307 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:35:40,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 12:35:40,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:35:40,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:35:40,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-20 12:35:40,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:40,519 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 [2024-02-20 12:35:40,950 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-02-20 12:35:40,950 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 68 treesize of output 38 [2024-02-20 12:35:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:40,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:35:42,876 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 [2024-02-20 12:35:42,935 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-02-20 12:35:42,936 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 178 treesize of output 164 [2024-02-20 12:35:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:45,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440054460] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:35:45,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:35:45,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-02-20 12:35:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331602148] [2024-02-20 12:35:45,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:35:45,225 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-02-20 12:35:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:35:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-02-20 12:35:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1216, Unknown=0, NotChecked=0, Total=1406 [2024-02-20 12:35:45,256 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2024-02-20 12:35:45,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 8416 transitions, 484164 flow. Second operand has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:45,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:45,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2024-02-20 12:35:45,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15