./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.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-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --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 12:22:37,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:22:37,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:22:37,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:22:37,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:22:37,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:22:37,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:22:37,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:22:37,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:22:37,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:22:37,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:22:37,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:22:37,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:22:37,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:22:37,581 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:22:37,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:22:37,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:22:37,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:22:37,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:22:37,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:22:37,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:22:37,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:22:37,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:22:37,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:22:37,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:22:37,584 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:22:37,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:22:37,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:22:37,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:22:37,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:22:37,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:22:37,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:22:37,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:37,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:22:37,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:22:37,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:22:37,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:22:37,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:22:37,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:22:37,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:22:37,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:22:37,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:22:37,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:22:37,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:22:37,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:22:37,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:22:37,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:22:37,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:22:37,901 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:22:37,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2024-02-20 12:22:39,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:22:39,526 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:22:39,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2024-02-20 12:22:39,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f8f1f23/e27ab449f3244239baa1bd3c06395a8d/FLAGa900126b7 [2024-02-20 12:22:39,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f8f1f23/e27ab449f3244239baa1bd3c06395a8d [2024-02-20 12:22:39,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:22:39,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:22:39,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:39,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:22:39,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:22:39,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e37577b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39, skipping insertion in model container [2024-02-20 12:22:39,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:22:39,750 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-mts.wvr.c[2533,2546] [2024-02-20 12:22:39,760 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:39,769 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:22:39,788 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-mts.wvr.c[2533,2546] [2024-02-20 12:22:39,792 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:39,819 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:22:39,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39 WrapperNode [2024-02-20 12:22:39,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:39,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:39,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:22:39,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:22:39,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,874 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 231 [2024-02-20 12:22:39,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:39,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:22:39,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:22:39,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:22:39,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,909 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 8, 2, 2, 2]. 50 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 12:22:39,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:22:39,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:22:39,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:22:39,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:22:39,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (1/1) ... [2024-02-20 12:22:39,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:39,991 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 12:22:39,994 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 12:22:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:22:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:22:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:22:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:22:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:22:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:22:40,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:22:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:22:40,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:22:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:22:40,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:22:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:22:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:22:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:22:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:22:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:22:40,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:22:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:22:40,040 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 12:22:40,133 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:22:40,135 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:22:40,457 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:22:40,457 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:22:40,773 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:22:40,774 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 12:22:40,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:40 BoogieIcfgContainer [2024-02-20 12:22:40,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:22:40,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:22:40,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:22:40,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:22:40,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:22:39" (1/3) ... [2024-02-20 12:22:40,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d15de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:40, skipping insertion in model container [2024-02-20 12:22:40,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:39" (2/3) ... [2024-02-20 12:22:40,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d15de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:40, skipping insertion in model container [2024-02-20 12:22:40,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:40" (3/3) ... [2024-02-20 12:22:40,785 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-02-20 12:22:40,803 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:22:40,804 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:22:40,804 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:22:40,863 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:22:40,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 83 flow [2024-02-20 12:22:40,940 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-02-20 12:22:40,941 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:40,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-02-20 12:22:40,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 31 transitions, 83 flow [2024-02-20 12:22:40,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 27 transitions, 72 flow [2024-02-20 12:22:40,957 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:22:40,963 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;@53520c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:22:40,964 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:22:40,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:22:40,975 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-02-20 12:22:40,975 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:40,975 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:40,976 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] [2024-02-20 12:22:40,977 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 12:22:40,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1838576641, now seen corresponding path program 1 times [2024-02-20 12:22:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012110966] [2024-02-20 12:22:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:41,503 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 12:22:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:41,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012110966] [2024-02-20 12:22:41,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012110966] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:41,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:41,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:22:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181244400] [2024-02-20 12:22:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:41,513 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:22:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:22:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:22:41,547 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-02-20 12:22:41,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:41,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:41,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-02-20 12:22:41,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:41,766 INFO L124 PetriNetUnfolderBase]: 433/638 cut-off events. [2024-02-20 12:22:41,766 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-20 12:22:41,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 638 events. 433/638 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2314 event pairs, 41 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 975. Up to 520 conditions per place. [2024-02-20 12:22:41,779 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 33 selfloop transitions, 4 changer transitions 1/43 dead transitions. [2024-02-20 12:22:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 195 flow [2024-02-20 12:22:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:22:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:22:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-02-20 12:22:41,793 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-02-20 12:22:41,798 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-20 12:22:41,799 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 43 transitions, 195 flow [2024-02-20 12:22:41,800 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:41,800 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:41,800 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] [2024-02-20 12:22:41,800 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:22:41,801 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 12:22:41,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash -301169373, now seen corresponding path program 1 times [2024-02-20 12:22:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:41,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593505975] [2024-02-20 12:22:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:41,927 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 12:22:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593505975] [2024-02-20 12:22:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593505975] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:22:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336664113] [2024-02-20 12:22:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:41,930 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:22:41,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:22:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:22:41,933 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-02-20 12:22:41,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 43 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 12:22:41,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:41,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-02-20 12:22:41,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:42,065 INFO L124 PetriNetUnfolderBase]: 433/639 cut-off events. [2024-02-20 12:22:42,065 INFO L125 PetriNetUnfolderBase]: For 109/153 co-relation queries the response was YES. [2024-02-20 12:22:42,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 639 events. 433/639 cut-off events. For 109/153 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2313 event pairs, 41 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1432. Up to 601 conditions per place. [2024-02-20 12:22:42,070 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 36 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2024-02-20 12:22:42,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 277 flow [2024-02-20 12:22:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:22:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:22:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-02-20 12:22:42,072 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-02-20 12:22:42,073 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-02-20 12:22:42,073 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 277 flow [2024-02-20 12:22:42,074 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 12:22:42,074 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:42,074 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] [2024-02-20 12:22:42,074 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:22:42,075 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 12:22:42,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:42,075 INFO L85 PathProgramCache]: Analyzing trace with hash 812980965, now seen corresponding path program 1 times [2024-02-20 12:22:42,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:42,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386239937] [2024-02-20 12:22:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:42,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386239937] [2024-02-20 12:22:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386239937] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602557852] [2024-02-20 12:22:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:42,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:42,172 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 12:22:42,208 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 12:22:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:42,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:22:42,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:42,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:42,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602557852] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:42,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:22:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-20 12:22:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656975755] [2024-02-20 12:22:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:42,390 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:22:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:22:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:22:42,396 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:22:42,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 12:22:42,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:42,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:22:42,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:42,527 INFO L124 PetriNetUnfolderBase]: 460/665 cut-off events. [2024-02-20 12:22:42,527 INFO L125 PetriNetUnfolderBase]: For 442/538 co-relation queries the response was YES. [2024-02-20 12:22:42,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 665 events. 460/665 cut-off events. For 442/538 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2529 event pairs, 57 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 2387. Up to 601 conditions per place. [2024-02-20 12:22:42,534 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 47 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-02-20 12:22:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 453 flow [2024-02-20 12:22:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:22:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:22:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-02-20 12:22:42,536 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-02-20 12:22:42,537 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-02-20 12:22:42,537 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 56 transitions, 453 flow [2024-02-20 12:22:42,537 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 12:22:42,537 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:42,537 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] [2024-02-20 12:22:42,568 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 12:22:42,768 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 12:22:42,769 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 12:22:42,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash 640099616, now seen corresponding path program 1 times [2024-02-20 12:22:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299162500] [2024-02-20 12:22:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299162500] [2024-02-20 12:22:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299162500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:22:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692950133] [2024-02-20 12:22:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:42,835 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:22:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:22:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:22:42,839 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-02-20 12:22:42,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 56 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:42,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:42,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-02-20 12:22:42,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:43,019 INFO L124 PetriNetUnfolderBase]: 594/843 cut-off events. [2024-02-20 12:22:43,019 INFO L125 PetriNetUnfolderBase]: For 1158/1158 co-relation queries the response was YES. [2024-02-20 12:22:43,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 843 events. 594/843 cut-off events. For 1158/1158 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3074 event pairs, 50 based on Foata normal form. 37/693 useless extension candidates. Maximal degree in co-relation 3630. Up to 704 conditions per place. [2024-02-20 12:22:43,029 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 67 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-02-20 12:22:43,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 749 flow [2024-02-20 12:22:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:22:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:22:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-02-20 12:22:43,031 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-02-20 12:22:43,032 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-02-20 12:22:43,032 INFO L507 AbstractCegarLoop]: Abstraction has has 44 places, 75 transitions, 749 flow [2024-02-20 12:22:43,032 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:43,033 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:43,033 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 12:22:43,033 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-20 12:22:43,033 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 12:22:43,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1076198349, now seen corresponding path program 1 times [2024-02-20 12:22:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664235141] [2024-02-20 12:22:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:43,948 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 12:22:43,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664235141] [2024-02-20 12:22:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664235141] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628675462] [2024-02-20 12:22:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:43,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:43,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:43,964 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 12:22:43,982 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 12:22:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:44,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:22:44,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:44,459 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 66 treesize of output 38 [2024-02-20 12:22:44,657 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 12:22:44,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:45,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:45,025 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 175 treesize of output 103 [2024-02-20 12:22:45,409 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 12:22:45,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628675462] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:45,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:45,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-02-20 12:22:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760249719] [2024-02-20 12:22:45,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:45,411 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:22:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:22:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:22:45,454 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-02-20 12:22:45,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 75 transitions, 749 flow. Second operand has 23 states, 23 states have (on average 9.0) internal successors, (207), 23 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 12:22:45,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:45,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-02-20 12:22:45,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:46,138 INFO L124 PetriNetUnfolderBase]: 966/1394 cut-off events. [2024-02-20 12:22:46,138 INFO L125 PetriNetUnfolderBase]: For 2684/2716 co-relation queries the response was YES. [2024-02-20 12:22:46,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1394 events. 966/1394 cut-off events. For 2684/2716 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5732 event pairs, 32 based on Foata normal form. 15/1105 useless extension candidates. Maximal degree in co-relation 5727. Up to 1159 conditions per place. [2024-02-20 12:22:46,154 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 123 selfloop transitions, 35 changer transitions 1/163 dead transitions. [2024-02-20 12:22:46,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 163 transitions, 1965 flow [2024-02-20 12:22:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:22:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:22:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-02-20 12:22:46,157 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5096774193548387 [2024-02-20 12:22:46,158 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-02-20 12:22:46,158 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 163 transitions, 1965 flow [2024-02-20 12:22:46,158 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.0) internal successors, (207), 23 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 12:22:46,158 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:46,159 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 12:22:46,178 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 12:22:46,375 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:46,375 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 12:22:46,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:46,376 INFO L85 PathProgramCache]: Analyzing trace with hash 82468005, now seen corresponding path program 2 times [2024-02-20 12:22:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668770504] [2024-02-20 12:22:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:47,121 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 12:22:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668770504] [2024-02-20 12:22:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668770504] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883070569] [2024-02-20 12:22:47,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:47,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:47,124 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 12:22:47,141 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 12:22:47,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:47,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:47,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-20 12:22:47,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:47,284 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 12:22:47,601 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 66 treesize of output 38 [2024-02-20 12:22:47,666 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 12:22:47,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:48,886 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 144 treesize of output 130 [2024-02-20 12:22:48,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:48,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 239 treesize of output 217 [2024-02-20 12:22:49,802 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 118 treesize of output 108 [2024-02-20 12:22:49,814 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-02-20 12:22:49,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 145 treesize of output 1 [2024-02-20 12:22:49,819 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 43 treesize of output 39 [2024-02-20 12:22:49,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 55 treesize of output 43 [2024-02-20 12:22:49,836 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 54 treesize of output 48 [2024-02-20 12:22:49,843 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 12:22:49,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 70 treesize of output 1 [2024-02-20 12:22:49,930 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 12:22:49,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883070569] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:49,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:49,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2024-02-20 12:22:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202211171] [2024-02-20 12:22:49,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:49,932 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:22:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:49,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:22:49,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:22:50,015 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:22:50,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 163 transitions, 1965 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:22:50,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:50,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:22:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:50,785 INFO L124 PetriNetUnfolderBase]: 1157/1667 cut-off events. [2024-02-20 12:22:50,785 INFO L125 PetriNetUnfolderBase]: For 3014/3022 co-relation queries the response was YES. [2024-02-20 12:22:50,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 1667 events. 1157/1667 cut-off events. For 3014/3022 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7092 event pairs, 30 based on Foata normal form. 3/1316 useless extension candidates. Maximal degree in co-relation 8421. Up to 1394 conditions per place. [2024-02-20 12:22:50,808 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 169 selfloop transitions, 38 changer transitions 2/211 dead transitions. [2024-02-20 12:22:50,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 2926 flow [2024-02-20 12:22:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:22:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:22:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-02-20 12:22:50,812 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-20 12:22:50,815 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-02-20 12:22:50,816 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 211 transitions, 2926 flow [2024-02-20 12:22:50,816 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:22:50,816 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:50,816 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 12:22:50,857 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 12:22:51,033 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:51,035 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 12:22:51,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1208698257, now seen corresponding path program 3 times [2024-02-20 12:22:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:51,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761307942] [2024-02-20 12:22:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:51,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:51,947 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 12:22:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761307942] [2024-02-20 12:22:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761307942] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144128805] [2024-02-20 12:22:51,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:22:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:51,950 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 12:22:51,956 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 12:22:52,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:22:52,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:52,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-20 12:22:52,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:52,092 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 12:22:52,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:52,495 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 74 treesize of output 46 [2024-02-20 12:22:52,660 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 12:22:52,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:53,806 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 69 treesize of output 61 [2024-02-20 12:22:53,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 92 treesize of output 84 [2024-02-20 12:22:53,847 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 96 treesize of output 86 [2024-02-20 12:22:53,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 125 treesize of output 115 [2024-02-20 12:22:53,951 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 12:22:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144128805] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:53,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-02-20 12:22:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118858396] [2024-02-20 12:22:53,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:53,953 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:22:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:22:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:22:53,996 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:22:53,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 211 transitions, 2926 flow. Second operand has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 12:22:53,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:53,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:22:53,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:55,252 INFO L124 PetriNetUnfolderBase]: 1727/2506 cut-off events. [2024-02-20 12:22:55,253 INFO L125 PetriNetUnfolderBase]: For 4411/4423 co-relation queries the response was YES. [2024-02-20 12:22:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18906 conditions, 2506 events. 1727/2506 cut-off events. For 4411/4423 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11752 event pairs, 36 based on Foata normal form. 6/1990 useless extension candidates. Maximal degree in co-relation 12865. Up to 2152 conditions per place. [2024-02-20 12:22:55,278 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 87 changer transitions 4/363 dead transitions. [2024-02-20 12:22:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 363 transitions, 5714 flow [2024-02-20 12:22:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 12:22:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 12:22:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 291 transitions. [2024-02-20 12:22:55,281 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-02-20 12:22:55,281 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2024-02-20 12:22:55,281 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 363 transitions, 5714 flow [2024-02-20 12:22:55,282 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 12:22:55,282 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:55,282 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 12:22:55,297 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 12:22:55,495 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:55,495 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 12:22:55,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1852408671, now seen corresponding path program 4 times [2024-02-20 12:22:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944814080] [2024-02-20 12:22:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:56,000 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 12:22:56,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944814080] [2024-02-20 12:22:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944814080] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352970496] [2024-02-20 12:22:56,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:22:56,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:56,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:56,002 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 12:22:56,019 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 12:22:56,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:22:56,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:56,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-20 12:22:56,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:56,159 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 12:22:56,388 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 66 treesize of output 38 [2024-02-20 12:22:56,458 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 12:22:56,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:57,399 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 213 treesize of output 195 [2024-02-20 12:22:57,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:57,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 287 treesize of output 317 [2024-02-20 12:23:13,551 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 98 treesize of output 90 [2024-02-20 12:23:13,563 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-02-20 12:23:13,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 120 treesize of output 1 [2024-02-20 12:23:13,619 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 12:23:13,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352970496] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:13,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-02-20 12:23:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577895334] [2024-02-20 12:23:13,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:13,620 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:23:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:23:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:23:13,706 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:13,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 363 transitions, 5714 flow. Second operand has 24 states, 24 states have (on average 8.0) internal successors, (192), 24 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 12:23:13,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:13,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:13,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:14,592 INFO L124 PetriNetUnfolderBase]: 1847/2683 cut-off events. [2024-02-20 12:23:14,592 INFO L125 PetriNetUnfolderBase]: For 4719/4727 co-relation queries the response was YES. [2024-02-20 12:23:14,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22959 conditions, 2683 events. 1847/2683 cut-off events. For 4719/4727 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12644 event pairs, 30 based on Foata normal form. 1/2122 useless extension candidates. Maximal degree in co-relation 15971. Up to 2329 conditions per place. [2024-02-20 12:23:14,621 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 350 selfloop transitions, 40 changer transitions 5/397 dead transitions. [2024-02-20 12:23:14,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 397 transitions, 7047 flow [2024-02-20 12:23:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 12:23:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 12:23:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-02-20 12:23:14,622 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-02-20 12:23:14,623 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-02-20 12:23:14,623 INFO L507 AbstractCegarLoop]: Abstraction has has 91 places, 397 transitions, 7047 flow [2024-02-20 12:23:14,623 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.0) internal successors, (192), 24 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 12:23:14,624 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:14,624 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 12:23:14,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:14,836 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:14,837 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 12:23:14,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1399394401, now seen corresponding path program 5 times [2024-02-20 12:23:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010091797] [2024-02-20 12:23:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:15,595 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 12:23:15,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:15,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010091797] [2024-02-20 12:23:15,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010091797] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:15,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377031] [2024-02-20 12:23:15,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:23:15,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:15,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:15,599 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 12:23:15,600 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 12:23:15,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:23:15,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:15,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-20 12:23:15,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:15,774 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 12:23:16,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:23:16,103 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 109 treesize of output 81 [2024-02-20 12:23:16,458 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 12:23:16,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:18,625 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 69 treesize of output 61 [2024-02-20 12:23:18,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 92 treesize of output 84 [2024-02-20 12:23:18,660 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 97 treesize of output 87 [2024-02-20 12:23:18,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 125 treesize of output 115 [2024-02-20 12:23:18,710 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 72 treesize of output 66 [2024-02-20 12:23:18,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 87 treesize of output 81 [2024-02-20 12:23:18,755 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 12:23:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377031] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:18,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2024-02-20 12:23:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495996264] [2024-02-20 12:23:18,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:18,757 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-20 12:23:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-20 12:23:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-02-20 12:23:18,768 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:18,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 397 transitions, 7047 flow. Second operand has 28 states, 28 states have (on average 7.571428571428571) internal successors, (212), 28 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 12:23:18,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:18,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:18,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:20,579 INFO L124 PetriNetUnfolderBase]: 2319/3350 cut-off events. [2024-02-20 12:23:20,580 INFO L125 PetriNetUnfolderBase]: For 5407/5423 co-relation queries the response was YES. [2024-02-20 12:23:20,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32045 conditions, 3350 events. 2319/3350 cut-off events. For 5407/5423 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 16315 event pairs, 32 based on Foata normal form. 5/2669 useless extension candidates. Maximal degree in co-relation 21525. Up to 2996 conditions per place. [2024-02-20 12:23:20,617 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 438 selfloop transitions, 110 changer transitions 6/556 dead transitions. [2024-02-20 12:23:20,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 556 transitions, 10934 flow [2024-02-20 12:23:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-20 12:23:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-20 12:23:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-02-20 12:23:20,619 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3987096774193548 [2024-02-20 12:23:20,620 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2024-02-20 12:23:20,620 INFO L507 AbstractCegarLoop]: Abstraction has has 115 places, 556 transitions, 10934 flow [2024-02-20 12:23:20,620 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.571428571428571) internal successors, (212), 28 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 12:23:20,620 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:20,621 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 12:23:20,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-02-20 12:23:20,833 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:20,833 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 12:23:20,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:20,834 INFO L85 PathProgramCache]: Analyzing trace with hash 819988389, now seen corresponding path program 6 times [2024-02-20 12:23:20,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:20,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021693875] [2024-02-20 12:23:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:20,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:21,530 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 12:23:21,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021693875] [2024-02-20 12:23:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021693875] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:21,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908258447] [2024-02-20 12:23:21,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:23:21,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:21,532 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 12:23:21,534 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 12:23:21,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:23:21,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:21,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-20 12:23:21,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:21,673 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 12:23:22,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:23:22,086 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 99 treesize of output 81 [2024-02-20 12:23:22,351 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 12:23:22,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:23,749 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 110 treesize of output 98 [2024-02-20 12:23:23,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 146 treesize of output 134 [2024-02-20 12:23:23,820 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 109 treesize of output 99 [2024-02-20 12:23:23,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 138 treesize of output 128 [2024-02-20 12:23:23,941 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 12:23:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908258447] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:23,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2024-02-20 12:23:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485329839] [2024-02-20 12:23:23,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:23,947 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:23:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:23:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:23:23,990 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:23,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 556 transitions, 10934 flow. Second operand has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 12:23:23,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:23,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:23,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:25,975 INFO L124 PetriNetUnfolderBase]: 2639/3801 cut-off events. [2024-02-20 12:23:25,975 INFO L125 PetriNetUnfolderBase]: For 6165/6177 co-relation queries the response was YES. [2024-02-20 12:23:25,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40241 conditions, 3801 events. 2639/3801 cut-off events. For 6165/6177 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 18852 event pairs, 44 based on Foata normal form. 5/3024 useless extension candidates. Maximal degree in co-relation 25497. Up to 3447 conditions per place. [2024-02-20 12:23:26,023 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 560 selfloop transitions, 81 changer transitions 7/650 dead transitions. [2024-02-20 12:23:26,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 650 transitions, 14083 flow [2024-02-20 12:23:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 12:23:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 12:23:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 293 transitions. [2024-02-20 12:23:26,025 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39381720430107525 [2024-02-20 12:23:26,026 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 105 predicate places. [2024-02-20 12:23:26,026 INFO L507 AbstractCegarLoop]: Abstraction has has 138 places, 650 transitions, 14083 flow [2024-02-20 12:23:26,026 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 12:23:26,026 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:26,027 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 12:23:26,046 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 12:23:26,244 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:26,244 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 12:23:26,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1378430909, now seen corresponding path program 7 times [2024-02-20 12:23:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:26,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777480694] [2024-02-20 12:23:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:26,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:26,361 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 12:23:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:26,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777480694] [2024-02-20 12:23:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777480694] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592942511] [2024-02-20 12:23:26,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:23:26,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:26,377 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 12:23:26,419 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 12:23:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:26,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:26,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:26,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592942511] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:26,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:23:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293465185] [2024-02-20 12:23:26,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:26,615 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:23:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:23:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:23:26,630 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:23:26,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 650 transitions, 14083 flow. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:26,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:26,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:23:26,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:27,461 INFO L124 PetriNetUnfolderBase]: 3287/4676 cut-off events. [2024-02-20 12:23:27,461 INFO L125 PetriNetUnfolderBase]: For 11342/11354 co-relation queries the response was YES. [2024-02-20 12:23:27,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53554 conditions, 4676 events. 3287/4676 cut-off events. For 11342/11354 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23586 event pairs, 74 based on Foata normal form. 2/3748 useless extension candidates. Maximal degree in co-relation 30689. Up to 4322 conditions per place. [2024-02-20 12:23:27,525 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 606 selfloop transitions, 40 changer transitions 6/699 dead transitions. [2024-02-20 12:23:27,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 699 transitions, 16472 flow [2024-02-20 12:23:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:23:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:23:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-02-20 12:23:27,526 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5040322580645161 [2024-02-20 12:23:27,527 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 110 predicate places. [2024-02-20 12:23:27,528 INFO L507 AbstractCegarLoop]: Abstraction has has 143 places, 699 transitions, 16472 flow [2024-02-20 12:23:27,528 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:27,528 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:27,528 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, 1] [2024-02-20 12:23:27,560 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 12:23:27,760 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,SelfDestructingSolverStorable10 [2024-02-20 12:23:27,761 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 12:23:27,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1956073759, now seen corresponding path program 1 times [2024-02-20 12:23:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076428376] [2024-02-20 12:23:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076428376] [2024-02-20 12:23:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076428376] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:27,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480249666] [2024-02-20 12:23:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:27,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:27,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:27,901 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 12:23:27,939 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 12:23:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:28,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:28,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:28,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480249666] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:28,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-20 12:23:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649714184] [2024-02-20 12:23:28,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:28,093 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 12:23:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 12:23:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-02-20 12:23:28,115 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:23:28,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 699 transitions, 16472 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:28,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:28,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:23:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:29,012 INFO L124 PetriNetUnfolderBase]: 3357/4975 cut-off events. [2024-02-20 12:23:29,013 INFO L125 PetriNetUnfolderBase]: For 57800/57927 co-relation queries the response was YES. [2024-02-20 12:23:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57896 conditions, 4975 events. 3357/4975 cut-off events. For 57800/57927 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25829 event pairs, 137 based on Foata normal form. 76/4556 useless extension candidates. Maximal degree in co-relation 32992. Up to 4159 conditions per place. [2024-02-20 12:23:29,077 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 714 selfloop transitions, 58 changer transitions 12/839 dead transitions. [2024-02-20 12:23:29,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 839 transitions, 21447 flow [2024-02-20 12:23:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:23:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:23:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-02-20 12:23:29,079 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-02-20 12:23:29,080 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 115 predicate places. [2024-02-20 12:23:29,080 INFO L507 AbstractCegarLoop]: Abstraction has has 148 places, 839 transitions, 21447 flow [2024-02-20 12:23:29,081 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:29,082 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:29,082 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 12:23:29,096 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 12:23:29,294 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:29,295 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 12:23:29,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1371836356, now seen corresponding path program 8 times [2024-02-20 12:23:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:29,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323152453] [2024-02-20 12:23:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323152453] [2024-02-20 12:23:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323152453] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120662991] [2024-02-20 12:23:29,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:23:29,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:29,385 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 12:23:29,404 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 12:23:29,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:23:29,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:29,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:29,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:29,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120662991] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:29,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:29,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:23:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904266826] [2024-02-20 12:23:29,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:29,582 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:23:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:23:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:23:29,598 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:23:29,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 839 transitions, 21447 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 12:23:29,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:29,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:23:29,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:30,527 INFO L124 PetriNetUnfolderBase]: 3030/4595 cut-off events. [2024-02-20 12:23:30,528 INFO L125 PetriNetUnfolderBase]: For 53509/53621 co-relation queries the response was YES. [2024-02-20 12:23:30,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57031 conditions, 4595 events. 3030/4595 cut-off events. For 53509/53621 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24286 event pairs, 113 based on Foata normal form. 18/4364 useless extension candidates. Maximal degree in co-relation 30529. Up to 3790 conditions per place. [2024-02-20 12:23:30,580 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 688 selfloop transitions, 87 changer transitions 38/861 dead transitions. [2024-02-20 12:23:30,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 861 transitions, 23645 flow [2024-02-20 12:23:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:23:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:23:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-02-20 12:23:30,581 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2024-02-20 12:23:30,582 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2024-02-20 12:23:30,582 INFO L507 AbstractCegarLoop]: Abstraction has has 154 places, 861 transitions, 23645 flow [2024-02-20 12:23:30,582 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 12:23:30,582 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:30,582 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:30,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:30,795 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,SelfDestructingSolverStorable12 [2024-02-20 12:23:30,795 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 12:23:30,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash -294288758, now seen corresponding path program 9 times [2024-02-20 12:23:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201539222] [2024-02-20 12:23:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:30,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201539222] [2024-02-20 12:23:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201539222] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538194788] [2024-02-20 12:23:30,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:23:30,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:30,936 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 12:23:30,968 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 12:23:31,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:23:31,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:31,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:31,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:31,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:31,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538194788] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:31,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-02-20 12:23:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879728780] [2024-02-20 12:23:31,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:31,244 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:23:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:23:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:31,250 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 861 transitions, 23645 flow. Second operand has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 12:23:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:33,212 INFO L124 PetriNetUnfolderBase]: 3688/5579 cut-off events. [2024-02-20 12:23:33,213 INFO L125 PetriNetUnfolderBase]: For 74823/74987 co-relation queries the response was YES. [2024-02-20 12:23:33,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73551 conditions, 5579 events. 3688/5579 cut-off events. For 74823/74987 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29860 event pairs, 51 based on Foata normal form. 30/5227 useless extension candidates. Maximal degree in co-relation 37985. Up to 4644 conditions per place. [2024-02-20 12:23:33,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 1113 selfloop transitions, 250 changer transitions 38/1411 dead transitions. [2024-02-20 12:23:33,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1411 transitions, 41174 flow [2024-02-20 12:23:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 12:23:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 12:23:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 203 transitions. [2024-02-20 12:23:33,291 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-02-20 12:23:33,292 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2024-02-20 12:23:33,293 INFO L507 AbstractCegarLoop]: Abstraction has has 167 places, 1411 transitions, 41174 flow [2024-02-20 12:23:33,293 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 12:23:33,293 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:33,293 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:33,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:33,514 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,SelfDestructingSolverStorable13 [2024-02-20 12:23:33,515 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 12:23:33,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1245683912, now seen corresponding path program 10 times [2024-02-20 12:23:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429128607] [2024-02-20 12:23:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429128607] [2024-02-20 12:23:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429128607] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809416459] [2024-02-20 12:23:33,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:23:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:33,614 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 12:23:33,616 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 12:23:33,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:23:33,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:33,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:33,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:33,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809416459] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:33,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:33,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:23:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756314450] [2024-02-20 12:23:33,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:33,894 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:23:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:33,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:23:33,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:23:33,913 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:33,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1411 transitions, 41174 flow. Second operand has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 12:23:33,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:33,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:36,071 INFO L124 PetriNetUnfolderBase]: 4466/6713 cut-off events. [2024-02-20 12:23:36,071 INFO L125 PetriNetUnfolderBase]: For 80133/80369 co-relation queries the response was YES. [2024-02-20 12:23:36,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96000 conditions, 6713 events. 4466/6713 cut-off events. For 80133/80369 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 35746 event pairs, 65 based on Foata normal form. 0/6146 useless extension candidates. Maximal degree in co-relation 56739. Up to 5730 conditions per place. [2024-02-20 12:23:36,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 1543 selfloop transitions, 199 changer transitions 38/1790 dead transitions. [2024-02-20 12:23:36,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1790 transitions, 55983 flow [2024-02-20 12:23:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 12:23:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 12:23:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-02-20 12:23:36,149 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-02-20 12:23:36,149 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 145 predicate places. [2024-02-20 12:23:36,149 INFO L507 AbstractCegarLoop]: Abstraction has has 178 places, 1790 transitions, 55983 flow [2024-02-20 12:23:36,149 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 12:23:36,150 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:36,150 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:36,165 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 12:23:36,363 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:23:36,363 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 12:23:36,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash 132865592, now seen corresponding path program 11 times [2024-02-20 12:23:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467376007] [2024-02-20 12:23:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:36,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467376007] [2024-02-20 12:23:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467376007] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:36,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965736506] [2024-02-20 12:23:36,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:23:36,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:36,484 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 12:23:36,528 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 12:23:36,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:23:36,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:36,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:36,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:36,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:36,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965736506] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:36,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:36,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-02-20 12:23:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015205816] [2024-02-20 12:23:36,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:36,811 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:23:36,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:23:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:23:36,821 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-02-20 12:23:36,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 1790 transitions, 55983 flow. Second operand has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 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 12:23:36,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:36,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-02-20 12:23:36,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:40,482 INFO L124 PetriNetUnfolderBase]: 4841/7271 cut-off events. [2024-02-20 12:23:40,482 INFO L125 PetriNetUnfolderBase]: For 74701/74701 co-relation queries the response was YES. [2024-02-20 12:23:40,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111214 conditions, 7271 events. 4841/7271 cut-off events. For 74701/74701 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 38997 event pairs, 47 based on Foata normal form. 24/6661 useless extension candidates. Maximal degree in co-relation 68926. Up to 6218 conditions per place. [2024-02-20 12:23:40,593 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 1405 selfloop transitions, 773 changer transitions 38/2217 dead transitions. [2024-02-20 12:23:40,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 2217 transitions, 72793 flow [2024-02-20 12:23:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 12:23:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 12:23:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 407 transitions. [2024-02-20 12:23:40,596 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38614800759013285 [2024-02-20 12:23:40,597 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 178 predicate places. [2024-02-20 12:23:40,604 INFO L507 AbstractCegarLoop]: Abstraction has has 211 places, 2217 transitions, 72793 flow [2024-02-20 12:23:40,604 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 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 12:23:40,604 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:40,604 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:40,618 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 12:23:40,818 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,SelfDestructingSolverStorable15 [2024-02-20 12:23:40,819 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 12:23:40,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -775121824, now seen corresponding path program 12 times [2024-02-20 12:23:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272105649] [2024-02-20 12:23:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:40,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:40,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272105649] [2024-02-20 12:23:40,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272105649] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:40,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983055737] [2024-02-20 12:23:40,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:23:40,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:40,979 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 12:23:41,016 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 12:23:41,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:23:41,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:41,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:41,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:41,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983055737] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:41,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 12:23:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835876854] [2024-02-20 12:23:41,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:41,351 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:23:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:41,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:23:41,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:23:41,358 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:41,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 2217 transitions, 72793 flow. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:23:41,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:41,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:41,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:46,089 INFO L124 PetriNetUnfolderBase]: 5307/7946 cut-off events. [2024-02-20 12:23:46,089 INFO L125 PetriNetUnfolderBase]: For 82302/82302 co-relation queries the response was YES. [2024-02-20 12:23:46,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129692 conditions, 7946 events. 5307/7946 cut-off events. For 82302/82302 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 43168 event pairs, 49 based on Foata normal form. 24/7218 useless extension candidates. Maximal degree in co-relation 84300. Up to 6892 conditions per place. [2024-02-20 12:23:46,419 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 1867 selfloop transitions, 606 changer transitions 38/2541 dead transitions. [2024-02-20 12:23:46,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 2541 transitions, 88478 flow [2024-02-20 12:23:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:23:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:23:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 267 transitions. [2024-02-20 12:23:46,422 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4533106960950764 [2024-02-20 12:23:46,423 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 196 predicate places. [2024-02-20 12:23:46,423 INFO L507 AbstractCegarLoop]: Abstraction has has 229 places, 2541 transitions, 88478 flow [2024-02-20 12:23:46,423 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:23:46,423 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:46,424 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:46,439 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 12:23:46,638 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:46,638 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 12:23:46,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1886622860, now seen corresponding path program 13 times [2024-02-20 12:23:46,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:46,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281008560] [2024-02-20 12:23:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281008560] [2024-02-20 12:23:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281008560] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079485626] [2024-02-20 12:23:46,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:23:46,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:46,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:46,765 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 12:23:46,766 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 12:23:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:46,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:46,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:46,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079485626] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:47,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:47,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-20 12:23:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337524398] [2024-02-20 12:23:47,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:47,072 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:23:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:23:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:23:47,080 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:47,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 2541 transitions, 88478 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:23:47,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:47,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:47,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:53,591 INFO L124 PetriNetUnfolderBase]: 6717/10047 cut-off events. [2024-02-20 12:23:53,591 INFO L125 PetriNetUnfolderBase]: For 130079/130079 co-relation queries the response was YES. [2024-02-20 12:23:53,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176868 conditions, 10047 events. 6717/10047 cut-off events. For 130079/130079 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 56878 event pairs, 65 based on Foata normal form. 0/9081 useless extension candidates. Maximal degree in co-relation 113279. Up to 8884 conditions per place. [2024-02-20 12:23:53,781 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 2547 selfloop transitions, 650 changer transitions 38/3265 dead transitions. [2024-02-20 12:23:53,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 3265 transitions, 121165 flow [2024-02-20 12:23:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 12:23:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 12:23:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 204 transitions. [2024-02-20 12:23:53,783 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-02-20 12:23:53,783 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 208 predicate places. [2024-02-20 12:23:53,783 INFO L507 AbstractCegarLoop]: Abstraction has has 241 places, 3265 transitions, 121165 flow [2024-02-20 12:23:53,784 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:23:53,784 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:53,784 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:53,801 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 12:23:54,000 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:23:54,000 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 12:23:54,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1616000530, now seen corresponding path program 14 times [2024-02-20 12:23:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064084305] [2024-02-20 12:23:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:54,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:54,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064084305] [2024-02-20 12:23:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064084305] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140762182] [2024-02-20 12:23:54,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:23:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:54,132 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 12:23:54,134 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 12:23:54,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:23:54,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:54,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:54,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:54,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140762182] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:54,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:23:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724475591] [2024-02-20 12:23:54,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:54,454 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:23:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:23:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:23:54,459 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:23:54,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 3265 transitions, 121165 flow. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:23:54,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:54,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:23:54,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:03,439 INFO L124 PetriNetUnfolderBase]: 6810/10206 cut-off events. [2024-02-20 12:24:03,440 INFO L125 PetriNetUnfolderBase]: For 136033/136033 co-relation queries the response was YES. [2024-02-20 12:24:03,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189551 conditions, 10206 events. 6810/10206 cut-off events. For 136033/136033 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 58186 event pairs, 67 based on Foata normal form. 24/9258 useless extension candidates. Maximal degree in co-relation 122389. Up to 9043 conditions per place. [2024-02-20 12:24:03,581 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 2761 selfloop transitions, 513 changer transitions 38/3342 dead transitions. [2024-02-20 12:24:03,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3342 transitions, 130601 flow [2024-02-20 12:24:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-20 12:24:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-20 12:24:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 199 transitions. [2024-02-20 12:24:03,586 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45852534562211983 [2024-02-20 12:24:03,586 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 221 predicate places. [2024-02-20 12:24:03,587 INFO L507 AbstractCegarLoop]: Abstraction has has 254 places, 3342 transitions, 130601 flow [2024-02-20 12:24:03,587 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:03,587 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:03,587 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:03,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 12:24:03,799 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:03,800 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 12:24:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -403487922, now seen corresponding path program 15 times [2024-02-20 12:24:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375121105] [2024-02-20 12:24:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:04,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:04,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375121105] [2024-02-20 12:24:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375121105] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:04,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218305209] [2024-02-20 12:24:04,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:24:04,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:04,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:04,026 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 12:24:04,047 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 12:24:04,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:24:04,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:04,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:24:04,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:04,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218305209] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:04,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-20 12:24:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990779882] [2024-02-20 12:24:04,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:04,373 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:24:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:24:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:24:04,382 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:24:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 3342 transitions, 130601 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:24:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:24:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:13,987 INFO L124 PetriNetUnfolderBase]: 7909/11771 cut-off events. [2024-02-20 12:24:13,987 INFO L125 PetriNetUnfolderBase]: For 149194/149194 co-relation queries the response was YES. [2024-02-20 12:24:14,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230989 conditions, 11771 events. 7909/11771 cut-off events. For 149194/149194 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 67837 event pairs, 89 based on Foata normal form. 0/10529 useless extension candidates. Maximal degree in co-relation 160166. Up to 10606 conditions per place. [2024-02-20 12:24:14,162 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 3104 selfloop transitions, 632 changer transitions 38/3804 dead transitions. [2024-02-20 12:24:14,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 3804 transitions, 156334 flow [2024-02-20 12:24:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 12:24:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 12:24:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 258 transitions. [2024-02-20 12:24:14,164 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48956356736242884 [2024-02-20 12:24:14,164 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 237 predicate places. [2024-02-20 12:24:14,164 INFO L507 AbstractCegarLoop]: Abstraction has has 270 places, 3804 transitions, 156334 flow [2024-02-20 12:24:14,165 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:24:14,165 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:14,165 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:14,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 12:24:14,372 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:14,373 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 12:24:14,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 708013114, now seen corresponding path program 16 times [2024-02-20 12:24:14,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:14,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264838866] [2024-02-20 12:24:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:14,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264838866] [2024-02-20 12:24:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264838866] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868963091] [2024-02-20 12:24:14,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:24:14,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:14,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:14,520 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 12:24:14,545 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 12:24:14,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:24:14,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:14,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:24:14,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:14,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:14,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868963091] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:14,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:14,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 12:24:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886035935] [2024-02-20 12:24:14,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:14,830 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:24:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:24:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:24:14,835 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:24:14,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 3804 transitions, 156334 flow. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:24:14,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:14,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:24:14,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:26,987 INFO L124 PetriNetUnfolderBase]: 8054/11983 cut-off events. [2024-02-20 12:24:26,988 INFO L125 PetriNetUnfolderBase]: For 157258/157258 co-relation queries the response was YES. [2024-02-20 12:24:27,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246950 conditions, 11983 events. 8054/11983 cut-off events. For 157258/157258 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 69265 event pairs, 83 based on Foata normal form. 24/10731 useless extension candidates. Maximal degree in co-relation 172596. Up to 10819 conditions per place. [2024-02-20 12:24:27,178 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 3143 selfloop transitions, 650 changer transitions 38/3861 dead transitions. [2024-02-20 12:24:27,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 3861 transitions, 166326 flow [2024-02-20 12:24:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 12:24:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 12:24:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 315 transitions. [2024-02-20 12:24:27,181 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46187683284457476 [2024-02-20 12:24:27,182 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 257 predicate places. [2024-02-20 12:24:27,182 INFO L507 AbstractCegarLoop]: Abstraction has has 290 places, 3861 transitions, 166326 flow [2024-02-20 12:24:27,182 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:24:27,182 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:27,182 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:27,195 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 12:24:27,395 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:27,395 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 12:24:27,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 594890340, now seen corresponding path program 17 times [2024-02-20 12:24:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97772185] [2024-02-20 12:24:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:27,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97772185] [2024-02-20 12:24:27,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97772185] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:27,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109100499] [2024-02-20 12:24:27,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:24:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:27,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:27,513 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 12:24:27,538 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 12:24:27,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:24:27,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:27,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:24:27,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:27,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109100499] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:27,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-20 12:24:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980816529] [2024-02-20 12:24:27,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:27,791 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:24:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:24:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:24:27,798 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-02-20 12:24:27,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 3861 transitions, 166326 flow. Second operand has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:27,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:27,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-02-20 12:24:27,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:47,157 INFO L124 PetriNetUnfolderBase]: 8990/13310 cut-off events. [2024-02-20 12:24:47,158 INFO L125 PetriNetUnfolderBase]: For 158973/158973 co-relation queries the response was YES. [2024-02-20 12:24:47,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288252 conditions, 13310 events. 8990/13310 cut-off events. For 158973/158973 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 76809 event pairs, 93 based on Foata normal form. 24/11822 useless extension candidates. Maximal degree in co-relation 210169. Up to 12145 conditions per place. [2024-02-20 12:24:47,433 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 2741 selfloop transitions, 1377 changer transitions 38/4157 dead transitions. [2024-02-20 12:24:47,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 4157 transitions, 186883 flow [2024-02-20 12:24:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-20 12:24:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-20 12:24:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 876 transitions. [2024-02-20 12:24:47,436 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37181663837011886 [2024-02-20 12:24:47,437 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 332 predicate places. [2024-02-20 12:24:47,437 INFO L507 AbstractCegarLoop]: Abstraction has has 365 places, 4157 transitions, 186883 flow [2024-02-20 12:24:47,437 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:24:47,437 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:47,437 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:47,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-20 12:24:47,652 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:47,653 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 12:24:47,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -516610696, now seen corresponding path program 18 times [2024-02-20 12:24:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65402737] [2024-02-20 12:24:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65402737] [2024-02-20 12:24:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65402737] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707456715] [2024-02-20 12:24:47,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:24:47,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:47,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:47,778 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 12:24:47,780 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 12:24:47,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:24:47,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:47,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:24:47,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:48,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:24:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707456715] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:48,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-20 12:24:48,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319488920] [2024-02-20 12:24:48,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:48,156 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:24:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:24:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:24:48,178 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-02-20 12:24:48,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 4157 transitions, 186883 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:24:48,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:48,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-02-20 12:24:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:07,469 INFO L124 PetriNetUnfolderBase]: 8958/13251 cut-off events. [2024-02-20 12:25:07,470 INFO L125 PetriNetUnfolderBase]: For 163068/163068 co-relation queries the response was YES. [2024-02-20 12:25:07,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299732 conditions, 13251 events. 8958/13251 cut-off events. For 163068/163068 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 76280 event pairs, 93 based on Foata normal form. 0/11763 useless extension candidates. Maximal degree in co-relation 218122. Up to 12087 conditions per place. [2024-02-20 12:25:07,744 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 3150 selfloop transitions, 873 changer transitions 38/4121 dead transitions. [2024-02-20 12:25:07,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 4121 transitions, 193362 flow [2024-02-20 12:25:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-20 12:25:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-20 12:25:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 304 transitions. [2024-02-20 12:25:07,753 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-02-20 12:25:07,754 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 348 predicate places. [2024-02-20 12:25:07,754 INFO L507 AbstractCegarLoop]: Abstraction has has 381 places, 4121 transitions, 193362 flow [2024-02-20 12:25:07,754 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 12:25:07,754 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:07,754 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:25:07,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 12:25:07,967 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,SelfDestructingSolverStorable22 [2024-02-20 12:25:07,968 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 12:25:07,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 675726776, now seen corresponding path program 2 times [2024-02-20 12:25:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975495509] [2024-02-20 12:25:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:25:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975495509] [2024-02-20 12:25:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975495509] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292343253] [2024-02-20 12:25:09,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:25:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:09,596 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 12:25:09,609 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 12:25:09,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:25:09,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:09,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 56 conjunts are in the unsatisfiable core [2024-02-20 12:25:09,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:09,819 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 12:25:10,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:25:10,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 104 [2024-02-20 12:25:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:25:11,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:27,127 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 849 treesize of output 761 [2024-02-20 12:25:27,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:25:27,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1689 treesize of output 1293 [2024-02-20 12:25:46,590 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 943 treesize of output 843 [2024-02-20 12:25:46,620 INFO L349 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2024-02-20 12:25:46,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2210 treesize of output 1710 [2024-02-20 12:26:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:26:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292343253] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:26:00,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:26:00,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-02-20 12:26:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049595484] [2024-02-20 12:26:00,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:26:00,420 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-02-20 12:26:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:26:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-02-20 12:26:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2024-02-20 12:26:00,677 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-02-20 12:26:00,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 4121 transitions, 193362 flow. Second operand has 40 states, 40 states have (on average 6.1) internal successors, (244), 40 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 12:26:00,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:26:00,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-02-20 12:26:00,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:26:58,590 INFO L124 PetriNetUnfolderBase]: 13544/20185 cut-off events. [2024-02-20 12:26:58,590 INFO L125 PetriNetUnfolderBase]: For 204077/204077 co-relation queries the response was YES. [2024-02-20 12:26:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479215 conditions, 20185 events. 13544/20185 cut-off events. For 204077/204077 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 126058 event pairs, 79 based on Foata normal form. 2/17640 useless extension candidates. Maximal degree in co-relation 322160. Up to 18596 conditions per place. [2024-02-20 12:26:58,937 INFO L140 encePairwiseOnDemand]: 16/31 looper letters, 5432 selfloop transitions, 2052 changer transitions 46/7531 dead transitions. [2024-02-20 12:26:58,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 7531 transitions, 368259 flow [2024-02-20 12:26:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-02-20 12:26:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-02-20 12:26:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 815 transitions. [2024-02-20 12:26:58,957 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42403746097814776 [2024-02-20 12:26:58,958 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 409 predicate places. [2024-02-20 12:26:58,958 INFO L507 AbstractCegarLoop]: Abstraction has has 442 places, 7531 transitions, 368259 flow [2024-02-20 12:26:58,958 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.1) internal successors, (244), 40 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 12:26:58,958 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:26:58,958 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:26:58,970 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 12:26:59,161 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,SelfDestructingSolverStorable23 [2024-02-20 12:26:59,167 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 12:26:59,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:26:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 41122310, now seen corresponding path program 3 times [2024-02-20 12:26:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:26:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969131552] [2024-02-20 12:26:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:26:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:26:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:27:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:27:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:27:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969131552] [2024-02-20 12:27:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969131552] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:27:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434004215] [2024-02-20 12:27:01,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:27:01,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:01,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:27:01,102 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 12:27:01,102 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 12:27:01,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:27:01,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:27:01,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 53 conjunts are in the unsatisfiable core [2024-02-20 12:27:01,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:27:01,337 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 12:27:02,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:27:02,164 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 160 treesize of output 88 [2024-02-20 12:27:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:27:02,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:27:08,190 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 1085 treesize of output 975 [2024-02-20 12:27:09,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:27:09,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 2058 treesize of output 2396 [2024-02-20 12:27:15,809 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-02-20 12:27:28,905 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:27:40,403 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:28:00,503 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-02-20 12:29:29,529 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:30:06,410 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-02-20 12:30:46,962 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-02-20 12:32:58,872 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-02-20 12:34:57,646 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-02-20 12:34:57,647 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-02-20 12:34:57,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 12:34:57,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-02-20 12:34:57,848 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:57,849 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:443) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:378) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:527) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-02-20 12:34:57,861 INFO L158 Benchmark]: Toolchain (without parser) took 738297.65ms. Allocated memory was 161.5MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 89.7MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 5.0GB. Max. memory is 16.1GB. [2024-02-20 12:34:57,861 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-20 12:34:57,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.58ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 77.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-02-20 12:34:57,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.73ms. Allocated memory is still 161.5MB. Free memory was 76.9MB in the beginning and 74.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-20 12:34:57,862 INFO L158 Benchmark]: Boogie Preprocessor took 67.71ms. Allocated memory is still 161.5MB. Free memory was 74.6MB in the beginning and 71.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-20 12:34:57,862 INFO L158 Benchmark]: RCFGBuilder took 828.04ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 71.4MB in the beginning and 144.3MB in the end (delta: -73.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2024-02-20 12:34:57,862 INFO L158 Benchmark]: TraceAbstraction took 737084.00ms. Allocated memory was 234.9MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 143.3MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.1GB. [2024-02-20 12:34:57,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.58ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 77.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.73ms. Allocated memory is still 161.5MB. Free memory was 76.9MB in the beginning and 74.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.71ms. Allocated memory is still 161.5MB. Free memory was 74.6MB in the beginning and 71.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 828.04ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 71.4MB in the beginning and 144.3MB in the end (delta: -73.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * TraceAbstraction took 737084.00ms. Allocated memory was 234.9MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 143.3MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 5.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --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 12:35:01,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:35:01,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-02-20 12:35:01,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:35:01,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:35:01,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:35:01,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:35:01,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:35:01,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:35:01,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:35:01,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:35:01,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:35:01,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:35:01,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:35:01,936 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:35:01,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:35:01,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:35:01,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:35:01,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:35:01,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:35:01,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:35:01,938 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-02-20 12:35:01,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:35:01,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:35:01,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:35:01,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:35:01,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:35:01,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:35:01,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:35:01,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:35:01,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:35:01,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:35:01,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:35:01,941 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-02-20 12:35:01,941 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-02-20 12:35:01,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:35:01,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:35:01,942 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:35:01,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:35:01,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:35:01,942 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-02-20 12:35:01,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:35:02,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:35:02,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:35:02,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:35:02,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:35:02,246 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:35:02,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2024-02-20 12:35:03,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:35:03,667 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:35:03,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2024-02-20 12:35:03,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103fe1aae/d6d33da8b5a84d31a85a9bb65c8c0874/FLAG2645162ee [2024-02-20 12:35:03,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103fe1aae/d6d33da8b5a84d31a85a9bb65c8c0874 [2024-02-20 12:35:03,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:35:03,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:35:03,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:35:03,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:35:03,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:35:03,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:35:03" (1/1) ... [2024-02-20 12:35:03,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2488541c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:03, skipping insertion in model container [2024-02-20 12:35:03,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:35:03" (1/1) ... [2024-02-20 12:35:03,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:35:03,927 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-mts.wvr.c[2533,2546] [2024-02-20 12:35:03,946 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:35:03,959 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-02-20 12:35:03,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:35:03,986 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-mts.wvr.c[2533,2546] [2024-02-20 12:35:03,996 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:35:03,999 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:35:04,029 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-mts.wvr.c[2533,2546] [2024-02-20 12:35:04,035 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:35:04,052 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:35:04,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04 WrapperNode [2024-02-20 12:35:04,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:35:04,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:35:04,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:35:04,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:35:04,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,108 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 224 [2024-02-20 12:35:04,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:35:04,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:35:04,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:35:04,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:35:04,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,132 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 8, 2, 2]. 50 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 12:35:04,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:35:04,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:35:04,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:35:04,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:35:04,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (1/1) ... [2024-02-20 12:35:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:35:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:35:04,226 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 12:35:04,292 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 12:35:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:35:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:35:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:35:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:35:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:35:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:35:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-02-20 12:35:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-02-20 12:35:04,324 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 12:35:04,418 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:35:04,419 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:35:04,854 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:35:04,854 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:35:05,221 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:35:05,221 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 12:35:05,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:35:05 BoogieIcfgContainer [2024-02-20 12:35:05,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:35:05,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:35:05,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:35:05,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:35:05,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:35:03" (1/3) ... [2024-02-20 12:35:05,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:35:05, skipping insertion in model container [2024-02-20 12:35:05,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:35:04" (2/3) ... [2024-02-20 12:35:05,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:35:05, skipping insertion in model container [2024-02-20 12:35:05,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:35:05" (3/3) ... [2024-02-20 12:35:05,230 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-02-20 12:35:05,246 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:35:05,246 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:35:05,246 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:35:05,304 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:35:05,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 83 flow [2024-02-20 12:35:05,365 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-02-20 12:35:05,365 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:35:05,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-02-20 12:35:05,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 31 transitions, 83 flow [2024-02-20 12:35:05,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 27 transitions, 72 flow [2024-02-20 12:35:05,385 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:35:05,391 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;@1c0a637d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:35:05,391 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:35:05,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:35:05,404 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-02-20 12:35:05,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:35:05,404 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:05,405 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] [2024-02-20 12:35:05,405 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 12:35:05,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 613076083, now seen corresponding path program 1 times [2024-02-20 12:35:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:35:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657436011] [2024-02-20 12:35:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:05,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:05,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:35:05,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-20 12:35:05,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-02-20 12:35:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:05,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-20 12:35:05,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:05,885 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 12:35:05,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:35:05,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:35:05,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657436011] [2024-02-20 12:35:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657436011] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:35:05,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:35:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:35:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867109517] [2024-02-20 12:35:05,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:35:05,894 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:35:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:35:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:35:05,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:35:05,921 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-02-20 12:35:05,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:05,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:05,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-02-20 12:35:05,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:06,147 INFO L124 PetriNetUnfolderBase]: 433/638 cut-off events. [2024-02-20 12:35:06,147 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-20 12:35:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 638 events. 433/638 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2300 event pairs, 41 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 975. Up to 520 conditions per place. [2024-02-20 12:35:06,155 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 33 selfloop transitions, 4 changer transitions 1/43 dead transitions. [2024-02-20 12:35:06,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 195 flow [2024-02-20 12:35:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:35:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:35:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-02-20 12:35:06,167 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-02-20 12:35:06,170 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-20 12:35:06,170 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 43 transitions, 195 flow [2024-02-20 12:35:06,171 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:06,171 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:06,171 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] [2024-02-20 12:35:06,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:06,378 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:06,380 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 12:35:06,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash -131925009, now seen corresponding path program 1 times [2024-02-20 12:35:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:35:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876659555] [2024-02-20 12:35:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:35:06,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-20 12:35:06,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-02-20 12:35:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:06,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 12:35:06,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:06,554 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 12:35:06,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:35:06,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:35:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876659555] [2024-02-20 12:35:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876659555] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:35:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:35:06,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:35:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798340942] [2024-02-20 12:35:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:35:06,557 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:35:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:35:06,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:35:06,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:35:06,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:35:06,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 43 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:35:06,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:06,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:35:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:06,830 INFO L124 PetriNetUnfolderBase]: 460/664 cut-off events. [2024-02-20 12:35:06,830 INFO L125 PetriNetUnfolderBase]: For 162/190 co-relation queries the response was YES. [2024-02-20 12:35:06,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 664 events. 460/664 cut-off events. For 162/190 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2516 event pairs, 57 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 1825. Up to 557 conditions per place. [2024-02-20 12:35:06,836 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 46 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-02-20 12:35:06,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 345 flow [2024-02-20 12:35:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:35:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:35:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-02-20 12:35:06,839 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-20 12:35:06,839 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-02-20 12:35:06,839 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 55 transitions, 345 flow [2024-02-20 12:35:06,840 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:35:06,840 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:06,840 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] [2024-02-20 12:35:06,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:07,045 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:07,045 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 12:35:07,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2044008234, now seen corresponding path program 1 times [2024-02-20 12:35:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:35:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048678519] [2024-02-20 12:35:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:35:07,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-20 12:35:07,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-02-20 12:35:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:07,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:35:07,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:07,281 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 12:35:07,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:35:07,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:35:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048678519] [2024-02-20 12:35:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048678519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:35:07,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:35:07,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:35:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124317612] [2024-02-20 12:35:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:35:07,283 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:35:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:35:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:35:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-20 12:35:07,293 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-02-20 12:35:07,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 55 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:35:07,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:07,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-02-20 12:35:07,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:07,637 INFO L124 PetriNetUnfolderBase]: 594/881 cut-off events. [2024-02-20 12:35:07,637 INFO L125 PetriNetUnfolderBase]: For 694/698 co-relation queries the response was YES. [2024-02-20 12:35:07,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 881 events. 594/881 cut-off events. For 694/698 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3490 event pairs, 69 based on Foata normal form. 47/744 useless extension candidates. Maximal degree in co-relation 3107. Up to 726 conditions per place. [2024-02-20 12:35:07,645 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 68 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-02-20 12:35:07,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 629 flow [2024-02-20 12:35:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:35:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:35:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-02-20 12:35:07,647 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-20 12:35:07,648 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2024-02-20 12:35:07,648 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 77 transitions, 629 flow [2024-02-20 12:35:07,649 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:35:07,649 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:07,649 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 12:35:07,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:07,854 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:07,854 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 12:35:07,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash -590914213, now seen corresponding path program 1 times [2024-02-20 12:35:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:35:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623078964] [2024-02-20 12:35:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:35:07,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-20 12:35:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-02-20 12:35:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:08,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:35:08,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:35:08,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 12:35:08,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-20 12:35:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623078964] [2024-02-20 12:35:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623078964] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:35:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:35:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:35:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273827598] [2024-02-20 12:35:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:35:08,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:35:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-20 12:35:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:35:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:35:08,040 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-02-20 12:35:08,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 77 transitions, 629 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:08,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:08,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-02-20 12:35:08,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:08,270 INFO L124 PetriNetUnfolderBase]: 594/882 cut-off events. [2024-02-20 12:35:08,270 INFO L125 PetriNetUnfolderBase]: For 1278/1292 co-relation queries the response was YES. [2024-02-20 12:35:08,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 882 events. 594/882 cut-off events. For 1278/1292 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3505 event pairs, 69 based on Foata normal form. 4/701 useless extension candidates. Maximal degree in co-relation 3828. Up to 764 conditions per place. [2024-02-20 12:35:08,278 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 71 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-02-20 12:35:08,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 783 flow [2024-02-20 12:35:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:35:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:35:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-02-20 12:35:08,280 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-02-20 12:35:08,281 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-02-20 12:35:08,281 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 78 transitions, 783 flow [2024-02-20 12:35:08,281 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:08,281 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:08,281 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 12:35:08,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:08,486 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:08,487 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 12:35:08,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1458776755, now seen corresponding path program 1 times [2024-02-20 12:35:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-20 12:35:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158012784] [2024-02-20 12:35:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-20 12:35:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-20 12:35:08,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-20 12:35:08,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-02-20 12:35:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:08,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2024-02-20 12:35:08,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,376 INFO L173 IndexEqualityManager]: detected equality via solver [2024-02-20 12:35:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,381 INFO L173 IndexEqualityManager]: detected equality via solver [2024-02-20 12:35:09,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:35:09,383 INFO L173 IndexEqualityManager]: detected equality via solver [2024-02-20 12:35:09,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-02-20 12:35:09,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:35:09,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 246 treesize of output 90 [2024-02-20 12:35:09,742 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 12:35:09,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:35:10,480 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-02-20 12:35:10,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 675 treesize of output 233 [2024-02-20 12:35:32,705 WARN L293 SmtUtils]: Spent 8.87s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-02-20 12:36:07,986 WARN L293 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 567 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15