./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5 --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 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:53:58,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:53:58,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:53:58,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:53:58,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:53:58,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:53:58,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:53:58,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:53:58,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:53:58,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:53:58,406 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:53:58,407 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:53:58,407 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:53:58,408 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:53:58,409 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:53:58,409 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:53:58,410 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:53:58,410 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:53:58,411 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:53:58,411 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:53:58,412 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:53:58,413 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:53:58,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:53:58,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:53:58,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:53:58,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:53:58,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:53:58,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:53:58,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:53:58,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:53:58,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:53:58,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:53:58,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:53:58,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:53:58,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:53:58,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:53:58,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:53:58,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:53:58,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:53:58,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:53:58,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:53:58,422 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:53:58,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:53:58,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:53:58,422 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:53:58,423 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:53:58,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:53:58,423 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_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 [2023-11-21 19:53:58,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:53:58,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:53:58,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:53:58,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:53:58,764 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:53:58,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-21 19:54:01,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:54:02,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:54:02,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-21 19:54:02,339 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/data/8b1aea8fe/750cd56a298948a3ba3faab5f38cf161/FLAGb586ba6c4 [2023-11-21 19:54:02,362 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/data/8b1aea8fe/750cd56a298948a3ba3faab5f38cf161 [2023-11-21 19:54:02,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:54:02,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:54:02,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:02,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:54:02,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:54:02,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:02" (1/1) ... [2023-11-21 19:54:02,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56345bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:02, skipping insertion in model container [2023-11-21 19:54:02,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:02" (1/1) ... [2023-11-21 19:54:02,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:54:02,658 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_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i[949,962] [2023-11-21 19:54:03,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:03,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:54:03,066 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_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i[949,962] [2023-11-21 19:54:03,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:03,274 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:54:03,274 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:54:03,283 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:54:03,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03 WrapperNode [2023-11-21 19:54:03,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:03,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:03,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:54:03,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:54:03,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,347 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-11-21 19:54:03,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:03,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:54:03,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:54:03,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:54:03,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:54:03,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:54:03,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:54:03,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:54:03,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (1/1) ... [2023-11-21 19:54:03,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:54:03,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:54:03,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69859f1a-fc77-4d82-a6f2-39aaf2edcf97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:54:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:54:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:54:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:54:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:54:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:54:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:54:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:54:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:54:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:54:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:54:03,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:54:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 19:54:03,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 19:54:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:54:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:54:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:54:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:54:03,493 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:54:03,651 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:54:03,653 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:54:04,108 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:54:04,470 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:54:04,470 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:54:04,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:04 BoogieIcfgContainer [2023-11-21 19:54:04,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:54:04,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:54:04,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:54:04,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:54:04,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:54:02" (1/3) ... [2023-11-21 19:54:04,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5744a775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:04, skipping insertion in model container [2023-11-21 19:54:04,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:03" (2/3) ... [2023-11-21 19:54:04,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5744a775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:04, skipping insertion in model container [2023-11-21 19:54:04,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:04" (3/3) ... [2023-11-21 19:54:04,483 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2023-11-21 19:54:04,494 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 19:54:04,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:54:04,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 19:54:04,508 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:54:04,578 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:54:04,620 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 50 transitions, 116 flow [2023-11-21 19:54:06,970 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35296 states, 35293 states have (on average 4.374578528320064) internal successors, (154392), 35295 states have internal predecessors, (154392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:06,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:54:07,005 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;@36f956f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:54:07,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 19:54:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 35296 states, 35293 states have (on average 4.374578528320064) internal successors, (154392), 35295 states have internal predecessors, (154392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:54:07,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:07,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:07,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash -637309770, now seen corresponding path program 1 times [2023-11-21 19:54:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:07,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487168101] [2023-11-21 19:54:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:07,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:07,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487168101] [2023-11-21 19:54:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487168101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:07,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:54:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127017302] [2023-11-21 19:54:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:08,083 INFO L87 Difference]: Start difference. First operand has 35296 states, 35293 states have (on average 4.374578528320064) internal successors, (154392), 35295 states have internal predecessors, (154392), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:09,204 INFO L93 Difference]: Finished difference Result 30347 states and 130816 transitions. [2023-11-21 19:54:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:54:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:10,062 INFO L225 Difference]: With dead ends: 30347 [2023-11-21 19:54:10,066 INFO L226 Difference]: Without dead ends: 28583 [2023-11-21 19:54:10,076 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 [2023-11-21 19:54:10,084 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28583 states. [2023-11-21 19:54:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28583 to 28583. [2023-11-21 19:54:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28583 states, 28582 states have (on average 4.323630256804982) internal successors, (123578), 28582 states have internal predecessors, (123578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28583 states to 28583 states and 123578 transitions. [2023-11-21 19:54:12,749 INFO L78 Accepts]: Start accepts. Automaton has 28583 states and 123578 transitions. Word has length 8 [2023-11-21 19:54:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:12,750 INFO L495 AbstractCegarLoop]: Abstraction has 28583 states and 123578 transitions. [2023-11-21 19:54:12,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 28583 states and 123578 transitions. [2023-11-21 19:54:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:54:12,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:12,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:54:12,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:12,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 861600552, now seen corresponding path program 1 times [2023-11-21 19:54:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:12,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407661579] [2023-11-21 19:54:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:14,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407661579] [2023-11-21 19:54:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407661579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:54:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001865470] [2023-11-21 19:54:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:54:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:54:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:54:14,122 INFO L87 Difference]: Start difference. First operand 28583 states and 123578 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:15,734 INFO L93 Difference]: Finished difference Result 50649 states and 213192 transitions. [2023-11-21 19:54:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:54:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-11-21 19:54:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:16,460 INFO L225 Difference]: With dead ends: 50649 [2023-11-21 19:54:16,460 INFO L226 Difference]: Without dead ends: 40967 [2023-11-21 19:54:16,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:54:16,462 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 168 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:16,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 208 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:54:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40967 states. [2023-11-21 19:54:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40967 to 28727. [2023-11-21 19:54:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28727 states, 28726 states have (on average 4.246779920629395) internal successors, (121993), 28726 states have internal predecessors, (121993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 121993 transitions. [2023-11-21 19:54:18,543 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 121993 transitions. Word has length 16 [2023-11-21 19:54:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:18,543 INFO L495 AbstractCegarLoop]: Abstraction has 28727 states and 121993 transitions. [2023-11-21 19:54:18,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 121993 transitions. [2023-11-21 19:54:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:54:18,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:18,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:18,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:54:18,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:18,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1505502963, now seen corresponding path program 1 times [2023-11-21 19:54:18,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:18,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737932788] [2023-11-21 19:54:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:19,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737932788] [2023-11-21 19:54:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737932788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:19,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:19,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:54:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337067034] [2023-11-21 19:54:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:54:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:54:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:54:19,225 INFO L87 Difference]: Start difference. First operand 28727 states and 121993 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:19,811 INFO L93 Difference]: Finished difference Result 29329 states and 122614 transitions. [2023-11-21 19:54:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:54:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-11-21 19:54:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:19,957 INFO L225 Difference]: With dead ends: 29329 [2023-11-21 19:54:19,958 INFO L226 Difference]: Without dead ends: 23911 [2023-11-21 19:54:19,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:54:19,959 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 111 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:19,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 161 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:54:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23911 states. [2023-11-21 19:54:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23911 to 23127. [2023-11-21 19:54:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23127 states, 23126 states have (on average 4.214001556689441) internal successors, (97453), 23126 states have internal predecessors, (97453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23127 states to 23127 states and 97453 transitions. [2023-11-21 19:54:21,506 INFO L78 Accepts]: Start accepts. Automaton has 23127 states and 97453 transitions. Word has length 18 [2023-11-21 19:54:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:21,506 INFO L495 AbstractCegarLoop]: Abstraction has 23127 states and 97453 transitions. [2023-11-21 19:54:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 23127 states and 97453 transitions. [2023-11-21 19:54:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 19:54:21,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:21,557 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] [2023-11-21 19:54:21,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:54:21,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:21,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -228963787, now seen corresponding path program 1 times [2023-11-21 19:54:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:21,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002028299] [2023-11-21 19:54:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:22,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002028299] [2023-11-21 19:54:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002028299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:22,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:54:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995371085] [2023-11-21 19:54:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:54:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:54:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:54:22,460 INFO L87 Difference]: Start difference. First operand 23127 states and 97453 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:23,313 INFO L93 Difference]: Finished difference Result 25537 states and 106376 transitions. [2023-11-21 19:54:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:54:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-11-21 19:54:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:23,441 INFO L225 Difference]: With dead ends: 25537 [2023-11-21 19:54:23,441 INFO L226 Difference]: Without dead ends: 22527 [2023-11-21 19:54:23,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:54:23,443 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 98 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:23,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 150 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22527 states. [2023-11-21 19:54:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22527 to 22447. [2023-11-21 19:54:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22447 states, 22446 states have (on average 4.206050075737325) internal successors, (94409), 22446 states have internal predecessors, (94409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22447 states to 22447 states and 94409 transitions. [2023-11-21 19:54:24,769 INFO L78 Accepts]: Start accepts. Automaton has 22447 states and 94409 transitions. Word has length 22 [2023-11-21 19:54:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:24,769 INFO L495 AbstractCegarLoop]: Abstraction has 22447 states and 94409 transitions. [2023-11-21 19:54:24,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 22447 states and 94409 transitions. [2023-11-21 19:54:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:54:24,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:24,823 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] [2023-11-21 19:54:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:54:24,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:24,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1225557641, now seen corresponding path program 1 times [2023-11-21 19:54:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:24,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466313693] [2023-11-21 19:54:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:25,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466313693] [2023-11-21 19:54:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466313693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:25,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:25,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:54:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597550696] [2023-11-21 19:54:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:54:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:54:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:54:25,535 INFO L87 Difference]: Start difference. First operand 22447 states and 94409 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:26,220 INFO L93 Difference]: Finished difference Result 23761 states and 99157 transitions. [2023-11-21 19:54:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:54:26,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-21 19:54:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:26,642 INFO L225 Difference]: With dead ends: 23761 [2023-11-21 19:54:26,643 INFO L226 Difference]: Without dead ends: 21661 [2023-11-21 19:54:26,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:54:26,648 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 130 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:26,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 279 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:54:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21661 states. [2023-11-21 19:54:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21661 to 21127. [2023-11-21 19:54:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21127 states, 21126 states have (on average 4.203493325759728) internal successors, (88803), 21126 states have internal predecessors, (88803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 88803 transitions. [2023-11-21 19:54:27,408 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 88803 transitions. Word has length 23 [2023-11-21 19:54:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:27,409 INFO L495 AbstractCegarLoop]: Abstraction has 21127 states and 88803 transitions. [2023-11-21 19:54:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 88803 transitions. [2023-11-21 19:54:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 19:54:27,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:27,447 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] [2023-11-21 19:54:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:54:27,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:27,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1873441575, now seen corresponding path program 1 times [2023-11-21 19:54:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84234815] [2023-11-21 19:54:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:29,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84234815] [2023-11-21 19:54:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84234815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:29,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:54:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636528602] [2023-11-21 19:54:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:54:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:29,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:54:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:54:29,133 INFO L87 Difference]: Start difference. First operand 21127 states and 88803 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:30,274 INFO L93 Difference]: Finished difference Result 34453 states and 142364 transitions. [2023-11-21 19:54:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:54:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-11-21 19:54:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:30,444 INFO L225 Difference]: With dead ends: 34453 [2023-11-21 19:54:30,444 INFO L226 Difference]: Without dead ends: 31275 [2023-11-21 19:54:30,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:54:30,446 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 169 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:30,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 236 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:54:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31275 states. [2023-11-21 19:54:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31275 to 21139. [2023-11-21 19:54:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21139 states, 21138 states have (on average 4.2033778030088) internal successors, (88851), 21138 states have internal predecessors, (88851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21139 states to 21139 states and 88851 transitions. [2023-11-21 19:54:31,503 INFO L78 Accepts]: Start accepts. Automaton has 21139 states and 88851 transitions. Word has length 24 [2023-11-21 19:54:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:31,503 INFO L495 AbstractCegarLoop]: Abstraction has 21139 states and 88851 transitions. [2023-11-21 19:54:31,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 21139 states and 88851 transitions. [2023-11-21 19:54:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 19:54:31,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:31,531 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] [2023-11-21 19:54:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:54:31,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -654393855, now seen corresponding path program 2 times [2023-11-21 19:54:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506341126] [2023-11-21 19:54:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:31,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506341126] [2023-11-21 19:54:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506341126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:54:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131165811] [2023-11-21 19:54:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:54:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:54:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:54:31,726 INFO L87 Difference]: Start difference. First operand 21139 states and 88851 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:32,004 INFO L93 Difference]: Finished difference Result 20745 states and 83212 transitions. [2023-11-21 19:54:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:54:32,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-11-21 19:54:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:32,085 INFO L225 Difference]: With dead ends: 20745 [2023-11-21 19:54:32,085 INFO L226 Difference]: Without dead ends: 17658 [2023-11-21 19:54:32,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:54:32,087 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:32,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 52 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17658 states. [2023-11-21 19:54:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17658 to 17658. [2023-11-21 19:54:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17658 states, 17657 states have (on average 4.058163901002436) internal successors, (71655), 17657 states have internal predecessors, (71655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17658 states to 17658 states and 71655 transitions. [2023-11-21 19:54:32,951 INFO L78 Accepts]: Start accepts. Automaton has 17658 states and 71655 transitions. Word has length 24 [2023-11-21 19:54:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:32,952 INFO L495 AbstractCegarLoop]: Abstraction has 17658 states and 71655 transitions. [2023-11-21 19:54:32,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17658 states and 71655 transitions. [2023-11-21 19:54:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 19:54:32,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:32,982 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] [2023-11-21 19:54:32,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:54:32,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -186695868, now seen corresponding path program 1 times [2023-11-21 19:54:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695233959] [2023-11-21 19:54:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:33,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:33,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695233959] [2023-11-21 19:54:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695233959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:33,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:54:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842346621] [2023-11-21 19:54:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:33,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:54:33,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:54:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:54:33,574 INFO L87 Difference]: Start difference. First operand 17658 states and 71655 transitions. Second operand has 6 states, 6 states have (on average 4.5) 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) [2023-11-21 19:54:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:34,475 INFO L93 Difference]: Finished difference Result 26608 states and 106356 transitions. [2023-11-21 19:54:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:54:34,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) 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 [2023-11-21 19:54:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:34,540 INFO L225 Difference]: With dead ends: 26608 [2023-11-21 19:54:34,540 INFO L226 Difference]: Without dead ends: 18282 [2023-11-21 19:54:34,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:54:34,541 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:34,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 202 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:54:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18282 states. [2023-11-21 19:54:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18282 to 16578. [2023-11-21 19:54:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16578 states, 16577 states have (on average 3.997406044519515) internal successors, (66265), 16577 states have internal predecessors, (66265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16578 states to 16578 states and 66265 transitions. [2023-11-21 19:54:35,027 INFO L78 Accepts]: Start accepts. Automaton has 16578 states and 66265 transitions. Word has length 27 [2023-11-21 19:54:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:35,027 INFO L495 AbstractCegarLoop]: Abstraction has 16578 states and 66265 transitions. [2023-11-21 19:54:35,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) 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) [2023-11-21 19:54:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16578 states and 66265 transitions. [2023-11-21 19:54:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 19:54:35,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:35,069 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] [2023-11-21 19:54:35,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:54:35,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:35,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1870380314, now seen corresponding path program 1 times [2023-11-21 19:54:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490924317] [2023-11-21 19:54:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:35,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:35,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490924317] [2023-11-21 19:54:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490924317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:35,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:35,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:54:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409888900] [2023-11-21 19:54:35,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:35,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:54:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:54:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:54:35,310 INFO L87 Difference]: Start difference. First operand 16578 states and 66265 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2023-11-21 19:54:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:35,554 INFO L93 Difference]: Finished difference Result 13586 states and 51553 transitions. [2023-11-21 19:54:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:54:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 [2023-11-21 19:54:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:35,587 INFO L225 Difference]: With dead ends: 13586 [2023-11-21 19:54:35,587 INFO L226 Difference]: Without dead ends: 11374 [2023-11-21 19:54:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:54:35,588 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 142 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:35,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 66 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2023-11-21 19:54:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11374. [2023-11-21 19:54:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11374 states, 11373 states have (on average 3.8055921920337643) internal successors, (43281), 11373 states have internal predecessors, (43281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11374 states to 11374 states and 43281 transitions. [2023-11-21 19:54:36,170 INFO L78 Accepts]: Start accepts. Automaton has 11374 states and 43281 transitions. Word has length 27 [2023-11-21 19:54:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:36,170 INFO L495 AbstractCegarLoop]: Abstraction has 11374 states and 43281 transitions. [2023-11-21 19:54:36,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2023-11-21 19:54:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11374 states and 43281 transitions. [2023-11-21 19:54:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:54:36,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:36,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:36,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:54:36,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:36,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1451481458, now seen corresponding path program 1 times [2023-11-21 19:54:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:36,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044023124] [2023-11-21 19:54:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:38,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044023124] [2023-11-21 19:54:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044023124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:38,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:38,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 19:54:38,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27868281] [2023-11-21 19:54:38,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 19:54:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 19:54:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:54:38,616 INFO L87 Difference]: Start difference. First operand 11374 states and 43281 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:39,248 INFO L93 Difference]: Finished difference Result 13802 states and 52375 transitions. [2023-11-21 19:54:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:54:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-21 19:54:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:39,302 INFO L225 Difference]: With dead ends: 13802 [2023-11-21 19:54:39,303 INFO L226 Difference]: Without dead ends: 13202 [2023-11-21 19:54:39,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:54:39,304 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 169 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:39,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 265 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:54:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13202 states. [2023-11-21 19:54:39,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13202 to 12682. [2023-11-21 19:54:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12682 states, 12681 states have (on average 3.8084535919880134) internal successors, (48295), 12681 states have internal predecessors, (48295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12682 states to 12682 states and 48295 transitions. [2023-11-21 19:54:39,714 INFO L78 Accepts]: Start accepts. Automaton has 12682 states and 48295 transitions. Word has length 30 [2023-11-21 19:54:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:39,717 INFO L495 AbstractCegarLoop]: Abstraction has 12682 states and 48295 transitions. [2023-11-21 19:54:39,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12682 states and 48295 transitions. [2023-11-21 19:54:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:54:39,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:39,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 19:54:39,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:39,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1960896570, now seen corresponding path program 2 times [2023-11-21 19:54:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593487483] [2023-11-21 19:54:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:39,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:39,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593487483] [2023-11-21 19:54:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593487483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:39,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:39,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:54:39,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144600064] [2023-11-21 19:54:39,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:39,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:54:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:54:39,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:54:39,991 INFO L87 Difference]: Start difference. First operand 12682 states and 48295 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:40,283 INFO L93 Difference]: Finished difference Result 10026 states and 37479 transitions. [2023-11-21 19:54:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:54:40,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-21 19:54:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:40,322 INFO L225 Difference]: With dead ends: 10026 [2023-11-21 19:54:40,322 INFO L226 Difference]: Without dead ends: 8962 [2023-11-21 19:54:40,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:54:40,323 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 191 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:40,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 82 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8962 states. [2023-11-21 19:54:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8962 to 8254. [2023-11-21 19:54:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8254 states, 8253 states have (on average 3.7437295528898584) internal successors, (30897), 8253 states have internal predecessors, (30897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8254 states to 8254 states and 30897 transitions. [2023-11-21 19:54:40,821 INFO L78 Accepts]: Start accepts. Automaton has 8254 states and 30897 transitions. Word has length 30 [2023-11-21 19:54:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:40,821 INFO L495 AbstractCegarLoop]: Abstraction has 8254 states and 30897 transitions. [2023-11-21 19:54:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8254 states and 30897 transitions. [2023-11-21 19:54:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 19:54:40,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:40,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:40,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 19:54:40,842 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:40,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 363993948, now seen corresponding path program 1 times [2023-11-21 19:54:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475229888] [2023-11-21 19:54:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:41,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475229888] [2023-11-21 19:54:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475229888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:41,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:54:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316887286] [2023-11-21 19:54:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:41,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:54:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:41,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:54:41,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:54:41,493 INFO L87 Difference]: Start difference. First operand 8254 states and 30897 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:42,070 INFO L93 Difference]: Finished difference Result 12942 states and 48139 transitions. [2023-11-21 19:54:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:54:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-21 19:54:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:42,104 INFO L225 Difference]: With dead ends: 12942 [2023-11-21 19:54:42,104 INFO L226 Difference]: Without dead ends: 8488 [2023-11-21 19:54:42,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:54:42,105 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 144 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:42,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 245 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:54:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2023-11-21 19:54:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 7240. [2023-11-21 19:54:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 7239 states have (on average 3.6342036192844316) internal successors, (26308), 7239 states have internal predecessors, (26308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 26308 transitions. [2023-11-21 19:54:42,339 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 26308 transitions. Word has length 33 [2023-11-21 19:54:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:42,339 INFO L495 AbstractCegarLoop]: Abstraction has 7240 states and 26308 transitions. [2023-11-21 19:54:42,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 26308 transitions. [2023-11-21 19:54:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 19:54:42,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:42,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 19:54:42,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:42,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:42,356 INFO L85 PathProgramCache]: Analyzing trace with hash 160629430, now seen corresponding path program 2 times [2023-11-21 19:54:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388649370] [2023-11-21 19:54:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:42,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388649370] [2023-11-21 19:54:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388649370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:42,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:42,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:54:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704417310] [2023-11-21 19:54:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:54:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:54:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:54:42,668 INFO L87 Difference]: Start difference. First operand 7240 states and 26308 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:42,983 INFO L93 Difference]: Finished difference Result 6488 states and 23684 transitions. [2023-11-21 19:54:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:54:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-21 19:54:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:42,994 INFO L225 Difference]: With dead ends: 6488 [2023-11-21 19:54:42,995 INFO L226 Difference]: Without dead ends: 3528 [2023-11-21 19:54:42,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:54:42,996 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 245 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:42,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 61 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2023-11-21 19:54:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3528. [2023-11-21 19:54:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 3.6200737170399773) internal successors, (12768), 3527 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 12768 transitions. [2023-11-21 19:54:43,059 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 12768 transitions. Word has length 33 [2023-11-21 19:54:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:43,059 INFO L495 AbstractCegarLoop]: Abstraction has 3528 states and 12768 transitions. [2023-11-21 19:54:43,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 12768 transitions. [2023-11-21 19:54:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 19:54:43,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:43,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 19:54:43,066 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 19:54:43,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash -236016344, now seen corresponding path program 1 times [2023-11-21 19:54:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65396983] [2023-11-21 19:54:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat