./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-hard1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-hard1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX --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 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:47,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:47,161 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:58:47,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:47,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:47,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:47,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:47,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:47,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:47,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:47,245 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:47,245 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:47,246 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:47,246 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:47,247 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:47,247 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:47,248 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:47,248 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:47,248 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:47,249 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:47,249 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:47,250 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:47,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:47,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:47,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:47,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:47,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:47,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:47,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:47,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:47,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:47,254 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:47,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:47,255 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:47,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:47,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:47,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:47,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:47,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:47,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:47,257 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:47,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:47,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:47,257 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:47,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:47,258 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_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 [2023-11-12 00:58:47,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:47,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:47,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:47,643 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:47,644 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:47,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/test-hard1.wvr.c [2023-11-12 00:58:51,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:51,641 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:51,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/sv-benchmarks/c/weaver/test-hard1.wvr.c [2023-11-12 00:58:51,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/data/ea3bcbefa/9cf47bc574574b968f3686a2a1a14de8/FLAG7e76d15c3 [2023-11-12 00:58:51,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/data/ea3bcbefa/9cf47bc574574b968f3686a2a1a14de8 [2023-11-12 00:58:51,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:51,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:51,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:51,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:51,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:51,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:51" (1/1) ... [2023-11-12 00:58:51,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50314935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:51, skipping insertion in model container [2023-11-12 00:58:51,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:51" (1/1) ... [2023-11-12 00:58:51,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:51,948 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_8d2b4329-e5f0-4d35-a34e-0ab80e391377/sv-benchmarks/c/weaver/test-hard1.wvr.c[3425,3438] [2023-11-12 00:58:51,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:51,966 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:52,004 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_8d2b4329-e5f0-4d35-a34e-0ab80e391377/sv-benchmarks/c/weaver/test-hard1.wvr.c[3425,3438] [2023-11-12 00:58:52,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:52,016 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:52,016 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:52,024 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:52,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52 WrapperNode [2023-11-12 00:58:52,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:52,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:52,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:52,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:52,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,069 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-11-12 00:58:52,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:52,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:52,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:52,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:52,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:52,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:52,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:52,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:52,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (1/1) ... [2023-11-12 00:58:52,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:52,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:52,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:52,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d2b4329-e5f0-4d35-a34e-0ab80e391377/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:58:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:58:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:58:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:58:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:58:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:58:52,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 00:58:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:58:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:58:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:58:52,214 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:58:52,321 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:52,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:52,665 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:52,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:52,792 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:58:52,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:52 BoogieIcfgContainer [2023-11-12 00:58:52,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:52,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:52,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:52,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:52,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:51" (1/3) ... [2023-11-12 00:58:52,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a7a8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:52, skipping insertion in model container [2023-11-12 00:58:52,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:52" (2/3) ... [2023-11-12 00:58:52,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a7a8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:52, skipping insertion in model container [2023-11-12 00:58:52,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:52" (3/3) ... [2023-11-12 00:58:52,809 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-11-12 00:58:52,821 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:58:52,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:52,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:58:52,835 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:58:52,955 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:58:53,004 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:58:53,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 140 transitions, 308 flow [2023-11-12 00:58:53,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 140 transitions, 308 flow [2023-11-12 00:58:53,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 140 transitions, 308 flow [2023-11-12 00:58:53,125 INFO L124 PetriNetUnfolderBase]: 10/136 cut-off events. [2023-11-12 00:58:53,126 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 00:58:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 136 events. 10/136 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-12 00:58:53,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-11-12 00:58:58,288 INFO L134 LiptonReduction]: Checked pairs total: 3963 [2023-11-12 00:58:58,289 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-12 00:58:58,308 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 38 transitions, 104 flow [2023-11-12 00:58:58,441 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 852 states, 851 states have (on average 4.1786133960047005) internal successors, (3556), 851 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:58:58,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:58,472 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;@2d5f695d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:58,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 00:58:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 852 states, 851 states have (on average 4.1786133960047005) internal successors, (3556), 851 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:58:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 00:58:58,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:58,508 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] [2023-11-12 00:58:58,509 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 2 more)] === [2023-11-12 00:58:58,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -453222715, now seen corresponding path program 1 times [2023-11-12 00:58:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566018298] [2023-11-12 00:58:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:58:59,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566018298] [2023-11-12 00:58:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566018298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:59,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:59,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:58:59,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681701168] [2023-11-12 00:58:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:59,189 INFO L87 Difference]: Start difference. First operand has 852 states, 851 states have (on average 4.1786133960047005) internal successors, (3556), 851 states have internal predecessors, (3556), 0 states have call successors, (0), 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 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:58:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:59,397 INFO L93 Difference]: Finished difference Result 1163 states and 4823 transitions. [2023-11-12 00:58:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-12 00:58:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:59,442 INFO L225 Difference]: With dead ends: 1163 [2023-11-12 00:58:59,443 INFO L226 Difference]: Without dead ends: 1154 [2023-11-12 00:58:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:59,449 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:58:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2023-11-12 00:58:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2023-11-12 00:58:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 4.158716392020815) internal successors, (4795), 1153 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:58:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 4795 transitions. [2023-11-12 00:58:59,589 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 4795 transitions. Word has length 25 [2023-11-12 00:58:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:59,590 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 4795 transitions. [2023-11-12 00:58:59,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:58:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 4795 transitions. [2023-11-12 00:58:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:58:59,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:59,598 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] [2023-11-12 00:58:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:58:59,598 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 2 more)] === [2023-11-12 00:58:59,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash 130473625, now seen corresponding path program 1 times [2023-11-12 00:58:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978866969] [2023-11-12 00:58:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:59,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:00,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978866969] [2023-11-12 00:59:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978866969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979492603] [2023-11-12 00:59:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:00,408 INFO L87 Difference]: Start difference. First operand 1154 states and 4795 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:01,094 INFO L93 Difference]: Finished difference Result 1884 states and 7219 transitions. [2023-11-12 00:59:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:59:01,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:01,115 INFO L225 Difference]: With dead ends: 1884 [2023-11-12 00:59:01,115 INFO L226 Difference]: Without dead ends: 1812 [2023-11-12 00:59:01,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:59:01,118 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 142 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:01,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 14 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-11-12 00:59:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1666. [2023-11-12 00:59:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 3.9903903903903903) internal successors, (6644), 1665 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 6644 transitions. [2023-11-12 00:59:01,209 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 6644 transitions. Word has length 27 [2023-11-12 00:59:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 6644 transitions. [2023-11-12 00:59:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 6644 transitions. [2023-11-12 00:59:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:01,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:01,220 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] [2023-11-12 00:59:01,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:59:01,222 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 2 more)] === [2023-11-12 00:59:01,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1398661739, now seen corresponding path program 1 times [2023-11-12 00:59:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801074903] [2023-11-12 00:59:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:01,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801074903] [2023-11-12 00:59:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801074903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:01,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:01,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064857331] [2023-11-12 00:59:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:01,727 INFO L87 Difference]: Start difference. First operand 1666 states and 6644 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:02,095 INFO L93 Difference]: Finished difference Result 2586 states and 9803 transitions. [2023-11-12 00:59:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:59:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:02,132 INFO L225 Difference]: With dead ends: 2586 [2023-11-12 00:59:02,132 INFO L226 Difference]: Without dead ends: 2496 [2023-11-12 00:59:02,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:02,138 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:02,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 22 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2023-11-12 00:59:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2042. [2023-11-12 00:59:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2041 states have (on average 4.034296913277805) internal successors, (8234), 2041 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 8234 transitions. [2023-11-12 00:59:02,271 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 8234 transitions. Word has length 27 [2023-11-12 00:59:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:02,272 INFO L495 AbstractCegarLoop]: Abstraction has 2042 states and 8234 transitions. [2023-11-12 00:59:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 8234 transitions. [2023-11-12 00:59:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:02,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:02,283 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] [2023-11-12 00:59:02,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:59:02,304 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 2 more)] === [2023-11-12 00:59:02,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -789310179, now seen corresponding path program 2 times [2023-11-12 00:59:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324049342] [2023-11-12 00:59:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:02,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:02,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324049342] [2023-11-12 00:59:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324049342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:02,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479570382] [2023-11-12 00:59:02,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:02,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:02,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:02,682 INFO L87 Difference]: Start difference. First operand 2042 states and 8234 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:03,041 INFO L93 Difference]: Finished difference Result 3234 states and 12155 transitions. [2023-11-12 00:59:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:59:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:03,082 INFO L225 Difference]: With dead ends: 3234 [2023-11-12 00:59:03,084 INFO L226 Difference]: Without dead ends: 3188 [2023-11-12 00:59:03,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:03,088 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:03,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2023-11-12 00:59:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 2176. [2023-11-12 00:59:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2175 states have (on average 4.070344827586207) internal successors, (8853), 2175 states have internal predecessors, (8853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 8853 transitions. [2023-11-12 00:59:03,304 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 8853 transitions. Word has length 27 [2023-11-12 00:59:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:03,304 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 8853 transitions. [2023-11-12 00:59:03,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 8853 transitions. [2023-11-12 00:59:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:03,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:03,317 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] [2023-11-12 00:59:03,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:59:03,318 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 2 more)] === [2023-11-12 00:59:03,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1452578826, now seen corresponding path program 1 times [2023-11-12 00:59:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717680607] [2023-11-12 00:59:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:03,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:03,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717680607] [2023-11-12 00:59:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717680607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337240526] [2023-11-12 00:59:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:03,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:03,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:03,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:03,875 INFO L87 Difference]: Start difference. First operand 2176 states and 8853 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:04,392 INFO L93 Difference]: Finished difference Result 4094 states and 15548 transitions. [2023-11-12 00:59:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:59:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:04,434 INFO L225 Difference]: With dead ends: 4094 [2023-11-12 00:59:04,435 INFO L226 Difference]: Without dead ends: 4068 [2023-11-12 00:59:04,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:59:04,436 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 118 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:04,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 15 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2023-11-12 00:59:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 2656. [2023-11-12 00:59:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2655 states have (on average 4.141242937853107) internal successors, (10995), 2655 states have internal predecessors, (10995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 10995 transitions. [2023-11-12 00:59:04,587 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 10995 transitions. Word has length 27 [2023-11-12 00:59:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:04,587 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 10995 transitions. [2023-11-12 00:59:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 10995 transitions. [2023-11-12 00:59:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:04,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:04,601 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] [2023-11-12 00:59:04,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:59:04,601 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 2 more)] === [2023-11-12 00:59:04,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash 75107105, now seen corresponding path program 2 times [2023-11-12 00:59:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612137669] [2023-11-12 00:59:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:05,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612137669] [2023-11-12 00:59:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612137669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:05,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:05,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478110645] [2023-11-12 00:59:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:05,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:05,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:05,078 INFO L87 Difference]: Start difference. First operand 2656 states and 10995 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:05,769 INFO L93 Difference]: Finished difference Result 4300 states and 16209 transitions. [2023-11-12 00:59:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 00:59:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:05,796 INFO L225 Difference]: With dead ends: 4300 [2023-11-12 00:59:05,797 INFO L226 Difference]: Without dead ends: 4252 [2023-11-12 00:59:05,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:59:05,798 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 187 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:05,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 29 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2023-11-12 00:59:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2708. [2023-11-12 00:59:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2707 states have (on average 4.154045068341337) internal successors, (11245), 2707 states have internal predecessors, (11245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 11245 transitions. [2023-11-12 00:59:06,052 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 11245 transitions. Word has length 27 [2023-11-12 00:59:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:06,052 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 11245 transitions. [2023-11-12 00:59:06,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 11245 transitions. [2023-11-12 00:59:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:06,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:06,065 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] [2023-11-12 00:59:06,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:59:06,065 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 2 more)] === [2023-11-12 00:59:06,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash 747404545, now seen corresponding path program 3 times [2023-11-12 00:59:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:06,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585369678] [2023-11-12 00:59:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:06,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:06,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585369678] [2023-11-12 00:59:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585369678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:06,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706516327] [2023-11-12 00:59:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:06,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:06,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:06,339 INFO L87 Difference]: Start difference. First operand 2708 states and 11245 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:06,610 INFO L93 Difference]: Finished difference Result 3832 states and 15003 transitions. [2023-11-12 00:59:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:59:06,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:06,636 INFO L225 Difference]: With dead ends: 3832 [2023-11-12 00:59:06,636 INFO L226 Difference]: Without dead ends: 3832 [2023-11-12 00:59:06,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:06,637 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:06,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 24 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2023-11-12 00:59:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2832. [2023-11-12 00:59:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 4.163899682091134) internal successors, (11788), 2831 states have internal predecessors, (11788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 11788 transitions. [2023-11-12 00:59:06,816 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 11788 transitions. Word has length 27 [2023-11-12 00:59:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:06,817 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 11788 transitions. [2023-11-12 00:59:06,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 11788 transitions. [2023-11-12 00:59:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:06,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:06,830 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] [2023-11-12 00:59:06,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:59:06,830 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 2 more)] === [2023-11-12 00:59:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1550610790, now seen corresponding path program 2 times [2023-11-12 00:59:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252455131] [2023-11-12 00:59:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:07,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252455131] [2023-11-12 00:59:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252455131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:07,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:07,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096832089] [2023-11-12 00:59:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:07,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:07,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:07,279 INFO L87 Difference]: Start difference. First operand 2832 states and 11788 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:07,696 INFO L93 Difference]: Finished difference Result 5756 states and 23145 transitions. [2023-11-12 00:59:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:59:07,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:07,729 INFO L225 Difference]: With dead ends: 5756 [2023-11-12 00:59:07,729 INFO L226 Difference]: Without dead ends: 5680 [2023-11-12 00:59:07,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:59:07,731 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 153 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:07,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 13 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2023-11-12 00:59:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 3322. [2023-11-12 00:59:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 4.299006323396568) internal successors, (14277), 3321 states have internal predecessors, (14277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 14277 transitions. [2023-11-12 00:59:08,011 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 14277 transitions. Word has length 27 [2023-11-12 00:59:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:08,012 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 14277 transitions. [2023-11-12 00:59:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 14277 transitions. [2023-11-12 00:59:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:08,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:08,032 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] [2023-11-12 00:59:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:59:08,033 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 2 more)] === [2023-11-12 00:59:08,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1939712182, now seen corresponding path program 3 times [2023-11-12 00:59:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:08,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860756650] [2023-11-12 00:59:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:08,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860756650] [2023-11-12 00:59:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860756650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:08,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638197202] [2023-11-12 00:59:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:08,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:08,398 INFO L87 Difference]: Start difference. First operand 3322 states and 14277 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:08,876 INFO L93 Difference]: Finished difference Result 5288 states and 21615 transitions. [2023-11-12 00:59:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:59:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:08,906 INFO L225 Difference]: With dead ends: 5288 [2023-11-12 00:59:08,906 INFO L226 Difference]: Without dead ends: 5262 [2023-11-12 00:59:08,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:59:08,908 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 120 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:08,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 16 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2023-11-12 00:59:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 3400. [2023-11-12 00:59:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 4.351279788172992) internal successors, (14790), 3399 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 14790 transitions. [2023-11-12 00:59:09,107 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 14790 transitions. Word has length 27 [2023-11-12 00:59:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:09,107 INFO L495 AbstractCegarLoop]: Abstraction has 3400 states and 14790 transitions. [2023-11-12 00:59:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 14790 transitions. [2023-11-12 00:59:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:09,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:09,124 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] [2023-11-12 00:59:09,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:59:09,124 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 2 more)] === [2023-11-12 00:59:09,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 912052487, now seen corresponding path program 3 times [2023-11-12 00:59:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:09,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194878268] [2023-11-12 00:59:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:09,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194878268] [2023-11-12 00:59:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194878268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775868910] [2023-11-12 00:59:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:09,699 INFO L87 Difference]: Start difference. First operand 3400 states and 14790 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:10,834 INFO L93 Difference]: Finished difference Result 8708 states and 35046 transitions. [2023-11-12 00:59:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:59:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:10,874 INFO L225 Difference]: With dead ends: 8708 [2023-11-12 00:59:10,874 INFO L226 Difference]: Without dead ends: 8634 [2023-11-12 00:59:10,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:59:10,875 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 208 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:10,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 28 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:59:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2023-11-12 00:59:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 3742. [2023-11-12 00:59:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 4.4039026998128845) internal successors, (16475), 3741 states have internal predecessors, (16475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 16475 transitions. [2023-11-12 00:59:11,197 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 16475 transitions. Word has length 27 [2023-11-12 00:59:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:11,197 INFO L495 AbstractCegarLoop]: Abstraction has 3742 states and 16475 transitions. [2023-11-12 00:59:11,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 16475 transitions. [2023-11-12 00:59:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:11,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:11,211 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] [2023-11-12 00:59:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:59:11,212 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 2 more)] === [2023-11-12 00:59:11,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash 469153347, now seen corresponding path program 4 times [2023-11-12 00:59:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594399230] [2023-11-12 00:59:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:11,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594399230] [2023-11-12 00:59:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594399230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:11,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:11,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381150638] [2023-11-12 00:59:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:11,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:11,666 INFO L87 Difference]: Start difference. First operand 3742 states and 16475 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:12,520 INFO L93 Difference]: Finished difference Result 7022 states and 29273 transitions. [2023-11-12 00:59:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:59:12,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:12,560 INFO L225 Difference]: With dead ends: 7022 [2023-11-12 00:59:12,560 INFO L226 Difference]: Without dead ends: 6984 [2023-11-12 00:59:12,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:59:12,561 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 201 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:12,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 23 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2023-11-12 00:59:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 3862. [2023-11-12 00:59:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 4.466200466200466) internal successors, (17244), 3861 states have internal predecessors, (17244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 17244 transitions. [2023-11-12 00:59:12,812 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 17244 transitions. Word has length 27 [2023-11-12 00:59:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:12,814 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 17244 transitions. [2023-11-12 00:59:12,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 17244 transitions. [2023-11-12 00:59:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:12,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:12,827 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] [2023-11-12 00:59:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:59:12,827 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 2 more)] === [2023-11-12 00:59:12,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1667210839, now seen corresponding path program 5 times [2023-11-12 00:59:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429126007] [2023-11-12 00:59:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:13,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429126007] [2023-11-12 00:59:13,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429126007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:13,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:13,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160125689] [2023-11-12 00:59:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:13,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:13,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:13,276 INFO L87 Difference]: Start difference. First operand 3862 states and 17244 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:14,133 INFO L93 Difference]: Finished difference Result 8846 states and 36659 transitions. [2023-11-12 00:59:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:59:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:14,218 INFO L225 Difference]: With dead ends: 8846 [2023-11-12 00:59:14,232 INFO L226 Difference]: Without dead ends: 8678 [2023-11-12 00:59:14,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:59:14,233 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:14,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 23 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:59:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2023-11-12 00:59:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 3992. [2023-11-12 00:59:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3991 states have (on average 4.477825106489601) internal successors, (17871), 3991 states have internal predecessors, (17871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 17871 transitions. [2023-11-12 00:59:14,502 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 17871 transitions. Word has length 27 [2023-11-12 00:59:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:14,503 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 17871 transitions. [2023-11-12 00:59:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 17871 transitions. [2023-11-12 00:59:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:14,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:14,517 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] [2023-11-12 00:59:14,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:59:14,518 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 2 more)] === [2023-11-12 00:59:14,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1120496230, now seen corresponding path program 1 times [2023-11-12 00:59:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:14,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940848610] [2023-11-12 00:59:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:14,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:14,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940848610] [2023-11-12 00:59:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940848610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:14,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:14,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449597132] [2023-11-12 00:59:14,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:14,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:14,748 INFO L87 Difference]: Start difference. First operand 3992 states and 17871 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:15,118 INFO L93 Difference]: Finished difference Result 5706 states and 24101 transitions. [2023-11-12 00:59:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:15,188 INFO L225 Difference]: With dead ends: 5706 [2023-11-12 00:59:15,189 INFO L226 Difference]: Without dead ends: 5706 [2023-11-12 00:59:15,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:15,190 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:15,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 33 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2023-11-12 00:59:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 4068. [2023-11-12 00:59:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 4067 states have (on average 4.457093680845833) internal successors, (18127), 4067 states have internal predecessors, (18127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 18127 transitions. [2023-11-12 00:59:15,378 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 18127 transitions. Word has length 27 [2023-11-12 00:59:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:15,379 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 18127 transitions. [2023-11-12 00:59:15,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 18127 transitions. [2023-11-12 00:59:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:15,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:15,394 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] [2023-11-12 00:59:15,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:59:15,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:15,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1186348990, now seen corresponding path program 2 times [2023-11-12 00:59:15,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:15,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648974945] [2023-11-12 00:59:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:15,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:15,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:15,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648974945] [2023-11-12 00:59:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648974945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:15,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:15,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:15,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613875048] [2023-11-12 00:59:15,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:15,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:15,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:15,793 INFO L87 Difference]: Start difference. First operand 4068 states and 18127 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:16,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:16,166 INFO L93 Difference]: Finished difference Result 5056 states and 21309 transitions. [2023-11-12 00:59:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:59:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:16,182 INFO L225 Difference]: With dead ends: 5056 [2023-11-12 00:59:16,182 INFO L226 Difference]: Without dead ends: 4950 [2023-11-12 00:59:16,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:59:16,183 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 114 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:16,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 7 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2023-11-12 00:59:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4182. [2023-11-12 00:59:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4181 states have (on average 4.453958383161923) internal successors, (18622), 4181 states have internal predecessors, (18622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 18622 transitions. [2023-11-12 00:59:16,378 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 18622 transitions. Word has length 27 [2023-11-12 00:59:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 4182 states and 18622 transitions. [2023-11-12 00:59:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 18622 transitions. [2023-11-12 00:59:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:16,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:16,432 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] [2023-11-12 00:59:16,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:59:16,433 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:16,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2082809558, now seen corresponding path program 3 times [2023-11-12 00:59:16,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:16,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836999468] [2023-11-12 00:59:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:16,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836999468] [2023-11-12 00:59:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836999468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029665190] [2023-11-12 00:59:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:16,847 INFO L87 Difference]: Start difference. First operand 4182 states and 18622 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:17,697 INFO L93 Difference]: Finished difference Result 7430 states and 30698 transitions. [2023-11-12 00:59:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:59:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:17,727 INFO L225 Difference]: With dead ends: 7430 [2023-11-12 00:59:17,727 INFO L226 Difference]: Without dead ends: 7350 [2023-11-12 00:59:17,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:59:17,729 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 176 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 15 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:59:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2023-11-12 00:59:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 4540. [2023-11-12 00:59:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 4539 states have (on average 4.47014760960564) internal successors, (20290), 4539 states have internal predecessors, (20290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 20290 transitions. [2023-11-12 00:59:17,977 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 20290 transitions. Word has length 27 [2023-11-12 00:59:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:17,978 INFO L495 AbstractCegarLoop]: Abstraction has 4540 states and 20290 transitions. [2023-11-12 00:59:17,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 20290 transitions. [2023-11-12 00:59:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:17,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:17,994 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] [2023-11-12 00:59:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:59:17,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:17,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2104955044, now seen corresponding path program 4 times [2023-11-12 00:59:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378668625] [2023-11-12 00:59:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:18,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378668625] [2023-11-12 00:59:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378668625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:18,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866421176] [2023-11-12 00:59:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:18,412 INFO L87 Difference]: Start difference. First operand 4540 states and 20290 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:19,126 INFO L93 Difference]: Finished difference Result 6950 states and 30243 transitions. [2023-11-12 00:59:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:59:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:19,156 INFO L225 Difference]: With dead ends: 6950 [2023-11-12 00:59:19,157 INFO L226 Difference]: Without dead ends: 6802 [2023-11-12 00:59:19,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:59:19,158 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:19,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 17 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:59:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6802 states. [2023-11-12 00:59:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6802 to 4932. [2023-11-12 00:59:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 4.4354086392212535) internal successors, (21871), 4931 states have internal predecessors, (21871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 21871 transitions. [2023-11-12 00:59:19,404 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 21871 transitions. Word has length 27 [2023-11-12 00:59:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:19,405 INFO L495 AbstractCegarLoop]: Abstraction has 4932 states and 21871 transitions. [2023-11-12 00:59:19,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 21871 transitions. [2023-11-12 00:59:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:19,422 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] [2023-11-12 00:59:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 00:59:19,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:19,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1805942044, now seen corresponding path program 5 times [2023-11-12 00:59:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868344963] [2023-11-12 00:59:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:19,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868344963] [2023-11-12 00:59:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868344963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:19,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194424941] [2023-11-12 00:59:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:19,607 INFO L87 Difference]: Start difference. First operand 4932 states and 21871 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:19,864 INFO L93 Difference]: Finished difference Result 6400 states and 27166 transitions. [2023-11-12 00:59:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:59:19,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:19,889 INFO L225 Difference]: With dead ends: 6400 [2023-11-12 00:59:19,889 INFO L226 Difference]: Without dead ends: 6358 [2023-11-12 00:59:19,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:19,890 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:19,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 22 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2023-11-12 00:59:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 5316. [2023-11-12 00:59:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.463969896519285) internal successors, (23726), 5315 states have internal predecessors, (23726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 23726 transitions. [2023-11-12 00:59:20,101 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 23726 transitions. Word has length 27 [2023-11-12 00:59:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:20,101 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 23726 transitions. [2023-11-12 00:59:20,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 23726 transitions. [2023-11-12 00:59:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:20,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:20,122 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] [2023-11-12 00:59:20,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:59:20,122 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:20,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash -253872623, now seen corresponding path program 4 times [2023-11-12 00:59:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259873608] [2023-11-12 00:59:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:20,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259873608] [2023-11-12 00:59:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259873608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:20,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678543249] [2023-11-12 00:59:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:20,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:20,364 INFO L87 Difference]: Start difference. First operand 5316 states and 23726 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:20,646 INFO L93 Difference]: Finished difference Result 6128 states and 25610 transitions. [2023-11-12 00:59:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:20,674 INFO L225 Difference]: With dead ends: 6128 [2023-11-12 00:59:20,674 INFO L226 Difference]: Without dead ends: 6026 [2023-11-12 00:59:20,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:20,675 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:20,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 22 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2023-11-12 00:59:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 4758. [2023-11-12 00:59:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4757 states have (on average 4.478452806390583) internal successors, (21304), 4757 states have internal predecessors, (21304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 21304 transitions. [2023-11-12 00:59:20,876 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 21304 transitions. Word has length 27 [2023-11-12 00:59:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:20,877 INFO L495 AbstractCegarLoop]: Abstraction has 4758 states and 21304 transitions. [2023-11-12 00:59:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 21304 transitions. [2023-11-12 00:59:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:20,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:20,898 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] [2023-11-12 00:59:20,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:59:20,899 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:20,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1282842101, now seen corresponding path program 5 times [2023-11-12 00:59:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637973801] [2023-11-12 00:59:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:21,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637973801] [2023-11-12 00:59:21,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637973801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:21,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566675063] [2023-11-12 00:59:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:21,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:21,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:21,137 INFO L87 Difference]: Start difference. First operand 4758 states and 21304 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:21,492 INFO L93 Difference]: Finished difference Result 6770 states and 28161 transitions. [2023-11-12 00:59:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:21,526 INFO L225 Difference]: With dead ends: 6770 [2023-11-12 00:59:21,526 INFO L226 Difference]: Without dead ends: 6698 [2023-11-12 00:59:21,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:21,527 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:21,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 29 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2023-11-12 00:59:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 4432. [2023-11-12 00:59:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 4.4351162265854205) internal successors, (19652), 4431 states have internal predecessors, (19652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 19652 transitions. [2023-11-12 00:59:21,740 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 19652 transitions. Word has length 27 [2023-11-12 00:59:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:21,740 INFO L495 AbstractCegarLoop]: Abstraction has 4432 states and 19652 transitions. [2023-11-12 00:59:21,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 19652 transitions. [2023-11-12 00:59:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:21,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:21,754 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] [2023-11-12 00:59:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 00:59:21,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:21,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1381348331, now seen corresponding path program 6 times [2023-11-12 00:59:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284656415] [2023-11-12 00:59:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:22,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:22,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284656415] [2023-11-12 00:59:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284656415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920421033] [2023-11-12 00:59:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:22,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:22,041 INFO L87 Difference]: Start difference. First operand 4432 states and 19652 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:22,380 INFO L93 Difference]: Finished difference Result 5384 states and 23849 transitions. [2023-11-12 00:59:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:22,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:22,399 INFO L225 Difference]: With dead ends: 5384 [2023-11-12 00:59:22,399 INFO L226 Difference]: Without dead ends: 5384 [2023-11-12 00:59:22,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:22,400 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 70 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:22,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 11 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2023-11-12 00:59:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4730. [2023-11-12 00:59:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 4.473884542186509) internal successors, (21157), 4729 states have internal predecessors, (21157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 21157 transitions. [2023-11-12 00:59:22,587 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 21157 transitions. Word has length 27 [2023-11-12 00:59:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:22,587 INFO L495 AbstractCegarLoop]: Abstraction has 4730 states and 21157 transitions. [2023-11-12 00:59:22,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 21157 transitions. [2023-11-12 00:59:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:22,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:22,603 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] [2023-11-12 00:59:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 00:59:22,604 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:22,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash -802381442, now seen corresponding path program 4 times [2023-11-12 00:59:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:22,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143316883] [2023-11-12 00:59:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:22,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:22,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143316883] [2023-11-12 00:59:22,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143316883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:22,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:22,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:59:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095466755] [2023-11-12 00:59:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:22,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:59:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:59:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:59:22,929 INFO L87 Difference]: Start difference. First operand 4730 states and 21157 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:23,461 INFO L93 Difference]: Finished difference Result 6304 states and 27158 transitions. [2023-11-12 00:59:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:59:23,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:23,488 INFO L225 Difference]: With dead ends: 6304 [2023-11-12 00:59:23,488 INFO L226 Difference]: Without dead ends: 6248 [2023-11-12 00:59:23,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:59:23,489 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 149 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:23,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 9 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2023-11-12 00:59:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 4740. [2023-11-12 00:59:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4739 states have (on average 4.511711331504537) internal successors, (21381), 4739 states have internal predecessors, (21381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 21381 transitions. [2023-11-12 00:59:23,703 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 21381 transitions. Word has length 27 [2023-11-12 00:59:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:23,704 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 21381 transitions. [2023-11-12 00:59:23,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 21381 transitions. [2023-11-12 00:59:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:23,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:23,721 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] [2023-11-12 00:59:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 00:59:23,721 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:23,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1153814380, now seen corresponding path program 6 times [2023-11-12 00:59:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753484392] [2023-11-12 00:59:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:23,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:23,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753484392] [2023-11-12 00:59:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753484392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:23,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172607544] [2023-11-12 00:59:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:59:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:59:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:23,934 INFO L87 Difference]: Start difference. First operand 4740 states and 21381 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:24,245 INFO L93 Difference]: Finished difference Result 6514 states and 27533 transitions. [2023-11-12 00:59:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:59:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:24,275 INFO L225 Difference]: With dead ends: 6514 [2023-11-12 00:59:24,275 INFO L226 Difference]: Without dead ends: 6514 [2023-11-12 00:59:24,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:59:24,278 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:24,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 24 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2023-11-12 00:59:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 4074. [2023-11-12 00:59:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 4.379572796464522) internal successors, (17838), 4073 states have internal predecessors, (17838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 17838 transitions. [2023-11-12 00:59:24,469 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 17838 transitions. Word has length 27 [2023-11-12 00:59:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:24,470 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 17838 transitions. [2023-11-12 00:59:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 17838 transitions. [2023-11-12 00:59:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:24,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:24,484 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] [2023-11-12 00:59:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 00:59:24,484 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:24,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1819847520, now seen corresponding path program 5 times [2023-11-12 00:59:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:24,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162481888] [2023-11-12 00:59:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:24,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162481888] [2023-11-12 00:59:24,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162481888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:24,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990086141] [2023-11-12 00:59:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:24,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:24,791 INFO L87 Difference]: Start difference. First operand 4074 states and 17838 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:25,360 INFO L93 Difference]: Finished difference Result 5290 states and 22501 transitions. [2023-11-12 00:59:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:59:25,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:25,374 INFO L225 Difference]: With dead ends: 5290 [2023-11-12 00:59:25,374 INFO L226 Difference]: Without dead ends: 5198 [2023-11-12 00:59:25,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:59:25,375 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:25,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 18 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2023-11-12 00:59:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 3974. [2023-11-12 00:59:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 4.348351371759375) internal successors, (17276), 3973 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 17276 transitions. [2023-11-12 00:59:25,525 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 17276 transitions. Word has length 27 [2023-11-12 00:59:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:25,525 INFO L495 AbstractCegarLoop]: Abstraction has 3974 states and 17276 transitions. [2023-11-12 00:59:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 17276 transitions. [2023-11-12 00:59:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:25,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:25,536 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] [2023-11-12 00:59:25,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 00:59:25,537 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:25,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 278356165, now seen corresponding path program 7 times [2023-11-12 00:59:25,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:25,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113788873] [2023-11-12 00:59:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:25,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113788873] [2023-11-12 00:59:25,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113788873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:25,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:25,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161193781] [2023-11-12 00:59:25,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:25,848 INFO L87 Difference]: Start difference. First operand 3974 states and 17276 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:26,205 INFO L93 Difference]: Finished difference Result 4492 states and 19272 transitions. [2023-11-12 00:59:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:59:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:26,221 INFO L225 Difference]: With dead ends: 4492 [2023-11-12 00:59:26,221 INFO L226 Difference]: Without dead ends: 4492 [2023-11-12 00:59:26,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:26,222 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:26,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:59:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2023-11-12 00:59:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 3986. [2023-11-12 00:59:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3985 states have (on average 4.34930991217064) internal successors, (17332), 3985 states have internal predecessors, (17332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 17332 transitions. [2023-11-12 00:59:26,400 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 17332 transitions. Word has length 27 [2023-11-12 00:59:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:26,401 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 17332 transitions. [2023-11-12 00:59:26,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 17332 transitions. [2023-11-12 00:59:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:26,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:26,416 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] [2023-11-12 00:59:26,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 00:59:26,417 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:26,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -874439639, now seen corresponding path program 8 times [2023-11-12 00:59:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222987136] [2023-11-12 00:59:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:26,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:26,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222987136] [2023-11-12 00:59:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222987136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:26,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:26,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248466954] [2023-11-12 00:59:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:26,791 INFO L87 Difference]: Start difference. First operand 3986 states and 17332 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:27,189 INFO L93 Difference]: Finished difference Result 4432 states and 18578 transitions. [2023-11-12 00:59:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:59:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:27,201 INFO L225 Difference]: With dead ends: 4432 [2023-11-12 00:59:27,202 INFO L226 Difference]: Without dead ends: 4388 [2023-11-12 00:59:27,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:59:27,204 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:27,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 4 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2023-11-12 00:59:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4002. [2023-11-12 00:59:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 4001 states have (on average 4.342914271432142) internal successors, (17376), 4001 states have internal predecessors, (17376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 17376 transitions. [2023-11-12 00:59:27,352 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 17376 transitions. Word has length 27 [2023-11-12 00:59:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 4002 states and 17376 transitions. [2023-11-12 00:59:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 17376 transitions. [2023-11-12 00:59:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:27,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:27,364 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] [2023-11-12 00:59:27,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 00:59:27,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:27,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash -798397329, now seen corresponding path program 6 times [2023-11-12 00:59:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422524359] [2023-11-12 00:59:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:27,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422524359] [2023-11-12 00:59:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422524359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:27,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044476437] [2023-11-12 00:59:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:27,756 INFO L87 Difference]: Start difference. First operand 4002 states and 17376 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:28,393 INFO L93 Difference]: Finished difference Result 4722 states and 20094 transitions. [2023-11-12 00:59:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:59:28,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:28,408 INFO L225 Difference]: With dead ends: 4722 [2023-11-12 00:59:28,408 INFO L226 Difference]: Without dead ends: 4646 [2023-11-12 00:59:28,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:59:28,409 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 109 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:28,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 16 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2023-11-12 00:59:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 3952. [2023-11-12 00:59:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 4.354087572766388) internal successors, (17203), 3951 states have internal predecessors, (17203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 17203 transitions. [2023-11-12 00:59:28,560 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 17203 transitions. Word has length 27 [2023-11-12 00:59:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:28,560 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 17203 transitions. [2023-11-12 00:59:28,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 17203 transitions. [2023-11-12 00:59:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:28,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:28,572 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] [2023-11-12 00:59:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 00:59:28,572 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:28,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1431213163, now seen corresponding path program 7 times [2023-11-12 00:59:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:28,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661262217] [2023-11-12 00:59:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:28,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:28,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661262217] [2023-11-12 00:59:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661262217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:28,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:28,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393550662] [2023-11-12 00:59:28,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:28,953 INFO L87 Difference]: Start difference. First operand 3952 states and 17203 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:29,443 INFO L93 Difference]: Finished difference Result 4608 states and 19875 transitions. [2023-11-12 00:59:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:59:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:29,464 INFO L225 Difference]: With dead ends: 4608 [2023-11-12 00:59:29,464 INFO L226 Difference]: Without dead ends: 4514 [2023-11-12 00:59:29,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:59:29,465 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:29,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 15 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:59:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2023-11-12 00:59:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 3630. [2023-11-12 00:59:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 4.302011573436208) internal successors, (15612), 3629 states have internal predecessors, (15612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 15612 transitions. [2023-11-12 00:59:29,607 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 15612 transitions. Word has length 27 [2023-11-12 00:59:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:29,607 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 15612 transitions. [2023-11-12 00:59:29,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 15612 transitions. [2023-11-12 00:59:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:29,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:29,621 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] [2023-11-12 00:59:29,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 00:59:29,621 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash 70509679, now seen corresponding path program 8 times [2023-11-12 00:59:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378816726] [2023-11-12 00:59:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:30,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378816726] [2023-11-12 00:59:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378816726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:30,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:59:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610192899] [2023-11-12 00:59:30,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:30,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:59:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:59:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:59:30,105 INFO L87 Difference]: Start difference. First operand 3630 states and 15612 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:30,610 INFO L93 Difference]: Finished difference Result 3934 states and 16833 transitions. [2023-11-12 00:59:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:59:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-12 00:59:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:30,620 INFO L225 Difference]: With dead ends: 3934 [2023-11-12 00:59:30,620 INFO L226 Difference]: Without dead ends: 3828 [2023-11-12 00:59:30,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:59:30,621 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:30,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 8 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:59:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2023-11-12 00:59:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3646. [2023-11-12 00:59:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 4.309190672153635) internal successors, (15707), 3645 states have internal predecessors, (15707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 15707 transitions. [2023-11-12 00:59:30,733 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 15707 transitions. Word has length 27 [2023-11-12 00:59:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:30,733 INFO L495 AbstractCegarLoop]: Abstraction has 3646 states and 15707 transitions. [2023-11-12 00:59:30,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:59:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 15707 transitions. [2023-11-12 00:59:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:59:30,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:30,745 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] [2023-11-12 00:59:30,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-12 00:59:30,746 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 00:59:30,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:30,746 INFO L85 PathProgramCache]: Analyzing trace with hash 316547708, now seen corresponding path program 7 times [2023-11-12 00:59:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859082420] [2023-11-12 00:59:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:31,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859082420] [2023-11-12 00:59:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859082420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:59:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588460368] [2023-11-12 00:59:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:31,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:59:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:59:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:59:31,030 INFO L87 Difference]: Start difference. First operand 3646 states and 15707 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)