./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:07:18,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:07:18,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:07:18,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:07:18,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:07:18,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:07:18,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:07:18,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:07:18,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:07:18,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:07:18,253 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:07:18,254 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:07:18,254 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:07:18,254 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:07:18,255 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:07:18,255 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:07:18,256 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:07:18,256 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:07:18,257 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:07:18,257 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:07:18,258 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:07:18,258 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:07:18,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:07:18,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:07:18,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:07:18,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:07:18,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:07:18,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:07:18,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:07:18,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:07:18,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:07:18,263 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:07:18,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:07:18,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:07:18,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:07:18,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:07:18,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:07:18,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:18,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:07:18,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:07:18,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:07:18,265 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:07:18,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:07:18,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:07:18,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:07:18,266 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:07:18,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:07:18,266 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2023-12-02 13:07:18,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:07:18,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:07:18,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:07:18,504 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:07:18,504 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:07:18,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-12-02 13:07:21,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:07:21,423 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:07:21,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-12-02 13:07:21,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/data/52170478f/03b6e8959fcc4efab22e7ca5828a219b/FLAGebc93e1c8 [2023-12-02 13:07:21,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/data/52170478f/03b6e8959fcc4efab22e7ca5828a219b [2023-12-02 13:07:21,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:07:21,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:07:21,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:21,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:07:21,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:07:21,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1eff44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21, skipping insertion in model container [2023-12-02 13:07:21,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:07:21,665 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-12-02 13:07:21,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:21,681 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:07:21,708 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-12-02 13:07:21,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:21,718 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:21,719 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:21,727 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:07:21,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21 WrapperNode [2023-12-02 13:07:21,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:21,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:21,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:07:21,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:07:21,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,774 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 251 [2023-12-02 13:07:21,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:21,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:07:21,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:07:21,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:07:21,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:07:21,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:07:21,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:07:21,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:07:21,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (1/1) ... [2023-12-02 13:07:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:21,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:07:21,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7224c275-8eee-4dbd-a41b-fb204c794346/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:07:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 13:07:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 13:07:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 13:07:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 13:07:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 13:07:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 13:07:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 13:07:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-02 13:07:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 13:07:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 13:07:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:07:21,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:07:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:07:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:07:21,888 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 13:07:22,008 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:07:22,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:07:22,302 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:07:22,602 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:07:22,603 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:07:22,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:22 BoogieIcfgContainer [2023-12-02 13:07:22,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:07:22,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:07:22,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:07:22,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:07:22,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:07:21" (1/3) ... [2023-12-02 13:07:22,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d4152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:22, skipping insertion in model container [2023-12-02 13:07:22,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:21" (2/3) ... [2023-12-02 13:07:22,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d4152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:22, skipping insertion in model container [2023-12-02 13:07:22,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:22" (3/3) ... [2023-12-02 13:07:22,613 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-12-02 13:07:22,622 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 13:07:22,632 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:07:22,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:07:22,633 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 13:07:22,697 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-12-02 13:07:22,729 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 59 transitions, 153 flow [2023-12-02 13:07:24,618 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50421 states, 50420 states have (on average 4.682645775485918) internal successors, (236099), 50420 states have internal predecessors, (236099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:24,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:07:24,644 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d541358, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:07:24,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 13:07:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 50421 states, 50420 states have (on average 4.682645775485918) internal successors, (236099), 50420 states have internal predecessors, (236099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:07:25,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:25,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:25,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:07:25,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1524698242, now seen corresponding path program 1 times [2023-12-02 13:07:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902317927] [2023-12-02 13:07:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:25,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902317927] [2023-12-02 13:07:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902317927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:25,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:25,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:07:25,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829545291] [2023-12-02 13:07:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:25,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:07:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:07:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:07:25,992 INFO L87 Difference]: Start difference. First operand has 50421 states, 50420 states have (on average 4.682645775485918) internal successors, (236099), 50420 states have internal predecessors, (236099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:27,725 INFO L93 Difference]: Finished difference Result 117126 states and 529074 transitions. [2023-12-02 13:07:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:07:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:07:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:28,723 INFO L225 Difference]: With dead ends: 117126 [2023-12-02 13:07:28,724 INFO L226 Difference]: Without dead ends: 117126 [2023-12-02 13:07:28,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:07:28,728 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 94 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:28,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 70 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:07:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117126 states. [2023-12-02 13:07:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117126 to 68625. [2023-12-02 13:07:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68625 states, 68624 states have (on average 4.5991927022615995) internal successors, (315615), 68624 states have internal predecessors, (315615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68625 states to 68625 states and 315615 transitions. [2023-12-02 13:07:32,967 INFO L78 Accepts]: Start accepts. Automaton has 68625 states and 315615 transitions. Word has length 53 [2023-12-02 13:07:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:32,967 INFO L495 AbstractCegarLoop]: Abstraction has 68625 states and 315615 transitions. [2023-12-02 13:07:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 68625 states and 315615 transitions. [2023-12-02 13:07:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:07:33,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:33,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:33,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:07:33,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:07:33,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1961258622, now seen corresponding path program 2 times [2023-12-02 13:07:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:33,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969740928] [2023-12-02 13:07:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:33,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969740928] [2023-12-02 13:07:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969740928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:07:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117961032] [2023-12-02 13:07:33,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:33,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:07:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:07:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:07:33,665 INFO L87 Difference]: Start difference. First operand 68625 states and 315615 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:35,298 INFO L93 Difference]: Finished difference Result 123320 states and 552728 transitions. [2023-12-02 13:07:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:07:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:07:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:36,379 INFO L225 Difference]: With dead ends: 123320 [2023-12-02 13:07:36,379 INFO L226 Difference]: Without dead ends: 123320 [2023-12-02 13:07:36,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:07:36,381 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 129 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:36,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 108 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:07:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123320 states. [2023-12-02 13:07:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123320 to 81241. [2023-12-02 13:07:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81241 states, 81240 states have (on average 4.5597858197932055) internal successors, (370437), 81240 states have internal predecessors, (370437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81241 states to 81241 states and 370437 transitions. [2023-12-02 13:07:39,748 INFO L78 Accepts]: Start accepts. Automaton has 81241 states and 370437 transitions. Word has length 53 [2023-12-02 13:07:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:39,749 INFO L495 AbstractCegarLoop]: Abstraction has 81241 states and 370437 transitions. [2023-12-02 13:07:39,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 81241 states and 370437 transitions. [2023-12-02 13:07:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:07:40,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:40,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:07:40,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:07:40,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1160766154, now seen corresponding path program 3 times [2023-12-02 13:07:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997953690] [2023-12-02 13:07:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:40,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997953690] [2023-12-02 13:07:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997953690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:07:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950525735] [2023-12-02 13:07:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:07:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:07:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:07:40,231 INFO L87 Difference]: Start difference. First operand 81241 states and 370437 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:41,875 INFO L93 Difference]: Finished difference Result 131312 states and 578500 transitions. [2023-12-02 13:07:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:07:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:07:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:42,767 INFO L225 Difference]: With dead ends: 131312 [2023-12-02 13:07:42,767 INFO L226 Difference]: Without dead ends: 131312 [2023-12-02 13:07:42,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:07:42,769 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 175 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:42,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 135 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:07:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131312 states. [2023-12-02 13:07:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131312 to 88891. [2023-12-02 13:07:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88891 states, 88890 states have (on average 4.457880526493419) internal successors, (396261), 88890 states have internal predecessors, (396261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88891 states to 88891 states and 396261 transitions. [2023-12-02 13:07:46,845 INFO L78 Accepts]: Start accepts. Automaton has 88891 states and 396261 transitions. Word has length 53 [2023-12-02 13:07:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:46,845 INFO L495 AbstractCegarLoop]: Abstraction has 88891 states and 396261 transitions. [2023-12-02 13:07:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 88891 states and 396261 transitions. [2023-12-02 13:07:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:07:47,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:47,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:07:47,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:07:47,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2080210046, now seen corresponding path program 4 times [2023-12-02 13:07:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:47,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416356421] [2023-12-02 13:07:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:47,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416356421] [2023-12-02 13:07:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416356421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:47,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:47,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:07:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332308696] [2023-12-02 13:07:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:47,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:07:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:07:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:07:47,913 INFO L87 Difference]: Start difference. First operand 88891 states and 396261 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:49,676 INFO L93 Difference]: Finished difference Result 133306 states and 588228 transitions. [2023-12-02 13:07:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:07:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:07:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:50,135 INFO L225 Difference]: With dead ends: 133306 [2023-12-02 13:07:50,136 INFO L226 Difference]: Without dead ends: 94695 [2023-12-02 13:07:50,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:07:50,137 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:50,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 42 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:07:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94695 states. [2023-12-02 13:07:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94695 to 94695. [2023-12-02 13:07:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94695 states, 94694 states have (on average 4.37575770376159) internal successors, (414358), 94694 states have internal predecessors, (414358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94695 states to 94695 states and 414358 transitions. [2023-12-02 13:07:53,265 INFO L78 Accepts]: Start accepts. Automaton has 94695 states and 414358 transitions. Word has length 53 [2023-12-02 13:07:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:53,265 INFO L495 AbstractCegarLoop]: Abstraction has 94695 states and 414358 transitions. [2023-12-02 13:07:53,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 94695 states and 414358 transitions. [2023-12-02 13:07:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:07:53,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:53,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:07:53,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:07:53,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1524706, now seen corresponding path program 5 times [2023-12-02 13:07:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:53,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964351218] [2023-12-02 13:07:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:07:54,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964351218] [2023-12-02 13:07:54,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964351218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:54,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:07:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854487700] [2023-12-02 13:07:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:07:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:07:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:07:54,143 INFO L87 Difference]: Start difference. First operand 94695 states and 414358 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:07:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:55,781 INFO L93 Difference]: Finished difference Result 126902 states and 547948 transitions. [2023-12-02 13:07:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:07:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:07:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:56,368 INFO L225 Difference]: With dead ends: 126902 [2023-12-02 13:07:56,368 INFO L226 Difference]: Without dead ends: 126830 [2023-12-02 13:07:56,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:07:56,369 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 157 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:56,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 157 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:07:56,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126830 states. [2023-12-02 13:07:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126830 to 98861. [2023-12-02 13:07:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98861 states, 98860 states have (on average 4.35906332186931) internal successors, (430937), 98860 states have internal predecessors, (430937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98861 states to 98861 states and 430937 transitions. [2023-12-02 13:08:00,519 INFO L78 Accepts]: Start accepts. Automaton has 98861 states and 430937 transitions. Word has length 53 [2023-12-02 13:08:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 98861 states and 430937 transitions. [2023-12-02 13:08:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 98861 states and 430937 transitions. [2023-12-02 13:08:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:00,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:00,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:08:00,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:00,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 325276574, now seen corresponding path program 6 times [2023-12-02 13:08:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:00,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940665206] [2023-12-02 13:08:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:00,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940665206] [2023-12-02 13:08:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940665206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:00,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:00,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:08:00,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702853084] [2023-12-02 13:08:00,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:00,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:08:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:08:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:08:00,904 INFO L87 Difference]: Start difference. First operand 98861 states and 430937 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:02,623 INFO L93 Difference]: Finished difference Result 146472 states and 626012 transitions. [2023-12-02 13:08:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:08:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:03,333 INFO L225 Difference]: With dead ends: 146472 [2023-12-02 13:08:03,334 INFO L226 Difference]: Without dead ends: 146112 [2023-12-02 13:08:03,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:03,335 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 128 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:03,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 108 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 13:08:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146112 states. [2023-12-02 13:08:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146112 to 105377. [2023-12-02 13:08:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105377 states, 105376 states have (on average 4.339792742180383) internal successors, (457310), 105376 states have internal predecessors, (457310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105377 states to 105377 states and 457310 transitions. [2023-12-02 13:08:07,676 INFO L78 Accepts]: Start accepts. Automaton has 105377 states and 457310 transitions. Word has length 53 [2023-12-02 13:08:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:07,676 INFO L495 AbstractCegarLoop]: Abstraction has 105377 states and 457310 transitions. [2023-12-02 13:08:07,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 105377 states and 457310 transitions. [2023-12-02 13:08:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:08,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:08,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:08,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:08:08,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:08,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1107699044, now seen corresponding path program 7 times [2023-12-02 13:08:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892620378] [2023-12-02 13:08:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:08,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892620378] [2023-12-02 13:08:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892620378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:08,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:08:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857223217] [2023-12-02 13:08:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:08:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:08:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:08:08,653 INFO L87 Difference]: Start difference. First operand 105377 states and 457310 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:10,355 INFO L93 Difference]: Finished difference Result 146594 states and 621752 transitions. [2023-12-02 13:08:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:08:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:11,127 INFO L225 Difference]: With dead ends: 146594 [2023-12-02 13:08:11,127 INFO L226 Difference]: Without dead ends: 146390 [2023-12-02 13:08:11,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:08:11,129 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 219 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:11,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 161 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:08:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146390 states. [2023-12-02 13:08:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146390 to 106011. [2023-12-02 13:08:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106011 states, 106010 states have (on average 4.311083860013206) internal successors, (457018), 106010 states have internal predecessors, (457018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106011 states to 106011 states and 457018 transitions. [2023-12-02 13:08:15,561 INFO L78 Accepts]: Start accepts. Automaton has 106011 states and 457018 transitions. Word has length 53 [2023-12-02 13:08:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:15,561 INFO L495 AbstractCegarLoop]: Abstraction has 106011 states and 457018 transitions. [2023-12-02 13:08:15,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 106011 states and 457018 transitions. [2023-12-02 13:08:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:15,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:15,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 13:08:15,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:15,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1987668836, now seen corresponding path program 8 times [2023-12-02 13:08:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94898748] [2023-12-02 13:08:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:16,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94898748] [2023-12-02 13:08:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94898748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:16,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:16,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:08:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484766528] [2023-12-02 13:08:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:16,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:08:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:08:16,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:08:16,008 INFO L87 Difference]: Start difference. First operand 106011 states and 457018 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:17,853 INFO L93 Difference]: Finished difference Result 163680 states and 686797 transitions. [2023-12-02 13:08:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:08:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:18,455 INFO L225 Difference]: With dead ends: 163680 [2023-12-02 13:08:18,455 INFO L226 Difference]: Without dead ends: 162768 [2023-12-02 13:08:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:08:18,456 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 70 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:08:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162768 states. [2023-12-02 13:08:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162768 to 106501. [2023-12-02 13:08:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106501 states, 106500 states have (on average 4.265755868544601) internal successors, (454303), 106500 states have internal predecessors, (454303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106501 states to 106501 states and 454303 transitions. [2023-12-02 13:08:22,801 INFO L78 Accepts]: Start accepts. Automaton has 106501 states and 454303 transitions. Word has length 53 [2023-12-02 13:08:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:22,801 INFO L495 AbstractCegarLoop]: Abstraction has 106501 states and 454303 transitions. [2023-12-02 13:08:22,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 106501 states and 454303 transitions. [2023-12-02 13:08:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:23,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:23,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:23,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 13:08:23,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:23,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1481909098, now seen corresponding path program 9 times [2023-12-02 13:08:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:23,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305080817] [2023-12-02 13:08:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:23,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305080817] [2023-12-02 13:08:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305080817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:08:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965051773] [2023-12-02 13:08:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:08:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:08:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:08:23,837 INFO L87 Difference]: Start difference. First operand 106501 states and 454303 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:25,352 INFO L93 Difference]: Finished difference Result 154026 states and 640834 transitions. [2023-12-02 13:08:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:08:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:25,952 INFO L225 Difference]: With dead ends: 154026 [2023-12-02 13:08:25,953 INFO L226 Difference]: Without dead ends: 153178 [2023-12-02 13:08:25,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:08:25,953 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:25,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 68 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:08:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153178 states. [2023-12-02 13:08:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153178 to 108089. [2023-12-02 13:08:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108089 states, 108088 states have (on average 4.2013637036488785) internal successors, (454117), 108088 states have internal predecessors, (454117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108089 states to 108089 states and 454117 transitions. [2023-12-02 13:08:30,420 INFO L78 Accepts]: Start accepts. Automaton has 108089 states and 454117 transitions. Word has length 53 [2023-12-02 13:08:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:30,420 INFO L495 AbstractCegarLoop]: Abstraction has 108089 states and 454117 transitions. [2023-12-02 13:08:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 108089 states and 454117 transitions. [2023-12-02 13:08:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:30,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:30,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:30,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:08:30,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash 343422542, now seen corresponding path program 10 times [2023-12-02 13:08:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039190207] [2023-12-02 13:08:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:30,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039190207] [2023-12-02 13:08:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039190207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:08:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557621080] [2023-12-02 13:08:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:08:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:08:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:08:30,903 INFO L87 Difference]: Start difference. First operand 108089 states and 454117 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:32,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:32,695 INFO L93 Difference]: Finished difference Result 149066 states and 614678 transitions. [2023-12-02 13:08:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:08:32,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:33,325 INFO L225 Difference]: With dead ends: 149066 [2023-12-02 13:08:33,325 INFO L226 Difference]: Without dead ends: 148238 [2023-12-02 13:08:33,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:33,326 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 123 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:33,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 108 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:08:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148238 states. [2023-12-02 13:08:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148238 to 106929. [2023-12-02 13:08:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106929 states, 106928 states have (on average 4.1904552596139455) internal successors, (448077), 106928 states have internal predecessors, (448077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106929 states to 106929 states and 448077 transitions. [2023-12-02 13:08:38,192 INFO L78 Accepts]: Start accepts. Automaton has 106929 states and 448077 transitions. Word has length 53 [2023-12-02 13:08:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:38,192 INFO L495 AbstractCegarLoop]: Abstraction has 106929 states and 448077 transitions. [2023-12-02 13:08:38,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 106929 states and 448077 transitions. [2023-12-02 13:08:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:38,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:38,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 13:08:38,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:38,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2127328210, now seen corresponding path program 11 times [2023-12-02 13:08:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764759809] [2023-12-02 13:08:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:38,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764759809] [2023-12-02 13:08:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764759809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:38,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:38,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:08:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815170693] [2023-12-02 13:08:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:08:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:08:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:38,616 INFO L87 Difference]: Start difference. First operand 106929 states and 448077 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:40,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:40,402 INFO L93 Difference]: Finished difference Result 149446 states and 606655 transitions. [2023-12-02 13:08:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:08:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:40,956 INFO L225 Difference]: With dead ends: 149446 [2023-12-02 13:08:40,956 INFO L226 Difference]: Without dead ends: 147526 [2023-12-02 13:08:40,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:08:40,957 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:40,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 127 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:08:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147526 states. [2023-12-02 13:08:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147526 to 109289. [2023-12-02 13:08:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109289 states, 109288 states have (on average 4.1238928336139375) internal successors, (450692), 109288 states have internal predecessors, (450692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109289 states to 109289 states and 450692 transitions. [2023-12-02 13:08:45,572 INFO L78 Accepts]: Start accepts. Automaton has 109289 states and 450692 transitions. Word has length 53 [2023-12-02 13:08:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:45,572 INFO L495 AbstractCegarLoop]: Abstraction has 109289 states and 450692 transitions. [2023-12-02 13:08:45,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 109289 states and 450692 transitions. [2023-12-02 13:08:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:45,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:45,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 13:08:45,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:45,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2106250090, now seen corresponding path program 12 times [2023-12-02 13:08:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:45,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773397424] [2023-12-02 13:08:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:46,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773397424] [2023-12-02 13:08:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773397424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:08:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317224184] [2023-12-02 13:08:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:46,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:08:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:08:46,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:08:46,027 INFO L87 Difference]: Start difference. First operand 109289 states and 450692 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:47,783 INFO L93 Difference]: Finished difference Result 142402 states and 575941 transitions. [2023-12-02 13:08:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:08:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 13:08:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:48,768 INFO L225 Difference]: With dead ends: 142402 [2023-12-02 13:08:48,768 INFO L226 Difference]: Without dead ends: 141218 [2023-12-02 13:08:48,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:48,769 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 137 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:48,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 104 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:08:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141218 states. [2023-12-02 13:08:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141218 to 104245. [2023-12-02 13:08:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104245 states, 104244 states have (on average 4.109377997774453) internal successors, (428378), 104244 states have internal predecessors, (428378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104245 states to 104245 states and 428378 transitions. [2023-12-02 13:08:52,564 INFO L78 Accepts]: Start accepts. Automaton has 104245 states and 428378 transitions. Word has length 53 [2023-12-02 13:08:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:52,565 INFO L495 AbstractCegarLoop]: Abstraction has 104245 states and 428378 transitions. [2023-12-02 13:08:52,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:08:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 104245 states and 428378 transitions. [2023-12-02 13:08:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 13:08:52,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:52,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 13:08:52,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-02 13:08:52,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1189881164, now seen corresponding path program 13 times [2023-12-02 13:08:52,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:52,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417650566] [2023-12-02 13:08:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:52,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417650566] [2023-12-02 13:08:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417650566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:52,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:52,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:08:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593849010] [2023-12-02 13:08:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:08:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:08:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:08:52,967 INFO L87 Difference]: Start difference. First operand 104245 states and 428378 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)