./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje --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 b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:21:02,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:21:02,937 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:21:02,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:21:02,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:21:02,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:21:02,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:21:02,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:21:02,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:21:02,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:21:02,985 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:21:02,986 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:21:02,986 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:21:02,986 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:21:02,987 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:21:02,987 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:21:02,990 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:21:02,990 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:21:02,991 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:21:02,991 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:21:02,991 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:21:02,996 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:21:02,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:21:02,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:21:02,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:21:02,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:21:02,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:21:02,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:21:02,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:21:02,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:21:02,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:21:02,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:21:02,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:21:03,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:21:03,000 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:21:03,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:21:03,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:21:03,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:21:03,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:21:03,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:21:03,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:21:03,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:21:03,004 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:21:03,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:21:03,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:21:03,006 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:21:03,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:21:03,006 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_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 [2024-11-09 07:21:03,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:21:03,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:21:03,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:21:03,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:21:03,348 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:21:03,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c Unable to find full path for "g++" [2024-11-09 07:21:05,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:21:05,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:21:05,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2024-11-09 07:21:05,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/data/7b8a43895/c7f69ccd8b434556b6514d4e292e0b9b/FLAG3e97d7366 [2024-11-09 07:21:05,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/data/7b8a43895/c7f69ccd8b434556b6514d4e292e0b9b [2024-11-09 07:21:05,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:21:05,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:21:05,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:21:05,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:21:05,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:21:05,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:21:05" (1/1) ... [2024-11-09 07:21:05,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5db491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:05, skipping insertion in model container [2024-11-09 07:21:05,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:21:05" (1/1) ... [2024-11-09 07:21:06,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:21:06,223 WARN L250 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_7e3230d4-e492-44d6-926c-786dd4b1263e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[914,927] [2024-11-09 07:21:06,291 WARN L250 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_7e3230d4-e492-44d6-926c-786dd4b1263e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[7115,7128] [2024-11-09 07:21:06,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:21:06,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:21:06,434 WARN L250 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_7e3230d4-e492-44d6-926c-786dd4b1263e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[914,927] [2024-11-09 07:21:06,473 WARN L250 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_7e3230d4-e492-44d6-926c-786dd4b1263e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[7115,7128] [2024-11-09 07:21:06,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:21:06,609 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:21:06,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06 WrapperNode [2024-11-09 07:21:06,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:21:06,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:21:06,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:21:06,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:21:06,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,687 INFO L138 Inliner]: procedures = 67, calls = 78, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 754 [2024-11-09 07:21:06,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:21:06,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:21:06,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:21:06,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:21:06,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:21:06,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:21:06,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:21:06,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:21:06,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (1/1) ... [2024-11-09 07:21:06,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:21:06,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:06,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:21:06,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:21:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:21:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 07:21:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 07:21:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-09 07:21:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-09 07:21:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-09 07:21:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-09 07:21:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-09 07:21:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-09 07:21:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-09 07:21:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-09 07:21:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-09 07:21:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-09 07:21:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-09 07:21:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-09 07:21:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-09 07:21:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-09 07:21:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-09 07:21:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-09 07:21:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-09 07:21:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-09 07:21:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-09 07:21:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-09 07:21:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:21:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-09 07:21:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-09 07:21:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-09 07:21:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-09 07:21:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:21:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:21:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-09 07:21:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-09 07:21:06,988 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:21:06,990 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:21:07,917 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-09 07:21:07,917 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:21:08,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:21:08,390 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-09 07:21:08,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:21:08 BoogieIcfgContainer [2024-11-09 07:21:08,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:21:08,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:21:08,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:21:08,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:21:08,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:21:05" (1/3) ... [2024-11-09 07:21:08,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be0cf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:08, skipping insertion in model container [2024-11-09 07:21:08,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:06" (2/3) ... [2024-11-09 07:21:08,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be0cf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:08, skipping insertion in model container [2024-11-09 07:21:08,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:21:08" (3/3) ... [2024-11-09 07:21:08,402 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2024-11-09 07:21:08,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:21:08,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 07:21:08,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:21:08,542 INFO L333 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, 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;@5c57ec9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:21:08,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 07:21:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 161 states have (on average 1.4968944099378882) internal successors, (241), 167 states have internal predecessors, (241), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-09 07:21:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 07:21:08,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:08,557 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:08,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:08,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1082441682, now seen corresponding path program 1 times [2024-11-09 07:21:08,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:08,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185109238] [2024-11-09 07:21:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:08,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:08,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185109238] [2024-11-09 07:21:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185109238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:21:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918016241] [2024-11-09 07:21:08,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:08,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:21:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:21:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:21:08,982 INFO L87 Difference]: Start difference. First operand has 213 states, 161 states have (on average 1.4968944099378882) internal successors, (241), 167 states have internal predecessors, (241), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:21:09,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:09,576 INFO L93 Difference]: Finished difference Result 477 states and 693 transitions. [2024-11-09 07:21:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:21:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2024-11-09 07:21:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:09,596 INFO L225 Difference]: With dead ends: 477 [2024-11-09 07:21:09,596 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 07:21:09,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:21:09,608 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 359 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:09,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 524 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:21:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 07:21:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 261. [2024-11-09 07:21:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 196 states have (on average 1.3979591836734695) internal successors, (274), 200 states have internal predecessors, (274), 43 states have call successors, (43), 21 states have call predecessors, (43), 20 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-09 07:21:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 358 transitions. [2024-11-09 07:21:09,690 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 358 transitions. Word has length 45 [2024-11-09 07:21:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:09,690 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 358 transitions. [2024-11-09 07:21:09,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:21:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 358 transitions. [2024-11-09 07:21:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 07:21:09,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:09,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:09,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:21:09,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:09,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash -163467059, now seen corresponding path program 1 times [2024-11-09 07:21:09,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:09,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577916090] [2024-11-09 07:21:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:09,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:09,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577916090] [2024-11-09 07:21:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577916090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:09,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:09,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:21:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013498345] [2024-11-09 07:21:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:09,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:21:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:21:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:21:09,968 INFO L87 Difference]: Start difference. First operand 261 states and 358 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:21:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:10,898 INFO L93 Difference]: Finished difference Result 663 states and 861 transitions. [2024-11-09 07:21:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:21:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2024-11-09 07:21:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:10,905 INFO L225 Difference]: With dead ends: 663 [2024-11-09 07:21:10,905 INFO L226 Difference]: Without dead ends: 531 [2024-11-09 07:21:10,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:21:10,908 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 764 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:10,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 916 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:21:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-09 07:21:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 447. [2024-11-09 07:21:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 328 states have (on average 1.3231707317073171) internal successors, (434), 333 states have internal predecessors, (434), 70 states have call successors, (70), 44 states have call predecessors, (70), 47 states have return successors, (72), 71 states have call predecessors, (72), 68 states have call successors, (72) [2024-11-09 07:21:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 576 transitions. [2024-11-09 07:21:10,986 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 576 transitions. Word has length 45 [2024-11-09 07:21:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:10,986 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 576 transitions. [2024-11-09 07:21:10,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:21:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 576 transitions. [2024-11-09 07:21:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:21:10,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:10,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:10,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:21:10,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:10,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1756961927, now seen corresponding path program 1 times [2024-11-09 07:21:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:10,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946054507] [2024-11-09 07:21:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:10,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:11,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946054507] [2024-11-09 07:21:11,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946054507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:11,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:21:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709600507] [2024-11-09 07:21:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:11,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:21:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:21:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:21:11,291 INFO L87 Difference]: Start difference. First operand 447 states and 576 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:21:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:12,252 INFO L93 Difference]: Finished difference Result 963 states and 1192 transitions. [2024-11-09 07:21:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:21:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2024-11-09 07:21:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:12,257 INFO L225 Difference]: With dead ends: 963 [2024-11-09 07:21:12,258 INFO L226 Difference]: Without dead ends: 661 [2024-11-09 07:21:12,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:21:12,261 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 425 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:12,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 895 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:21:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-09 07:21:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 626. [2024-11-09 07:21:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 453 states have (on average 1.293598233995585) internal successors, (586), 459 states have internal predecessors, (586), 97 states have call successors, (97), 67 states have call predecessors, (97), 74 states have return successors, (103), 101 states have call predecessors, (103), 95 states have call successors, (103) [2024-11-09 07:21:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 786 transitions. [2024-11-09 07:21:12,345 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 786 transitions. Word has length 46 [2024-11-09 07:21:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:12,346 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 786 transitions. [2024-11-09 07:21:12,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:21:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 786 transitions. [2024-11-09 07:21:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 07:21:12,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:12,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:12,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:21:12,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:12,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1595301906, now seen corresponding path program 1 times [2024-11-09 07:21:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571564501] [2024-11-09 07:21:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:12,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571564501] [2024-11-09 07:21:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571564501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:12,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:12,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:21:12,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054888082] [2024-11-09 07:21:12,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:12,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:21:12,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:21:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:12,415 INFO L87 Difference]: Start difference. First operand 626 states and 786 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:21:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:12,625 INFO L93 Difference]: Finished difference Result 1190 states and 1456 transitions. [2024-11-09 07:21:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:21:12,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2024-11-09 07:21:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:12,633 INFO L225 Difference]: With dead ends: 1190 [2024-11-09 07:21:12,633 INFO L226 Difference]: Without dead ends: 758 [2024-11-09 07:21:12,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:12,636 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 67 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:12,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 479 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:21:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-09 07:21:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 653. [2024-11-09 07:21:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 476 states have (on average 1.2836134453781514) internal successors, (611), 482 states have internal predecessors, (611), 99 states have call successors, (99), 69 states have call predecessors, (99), 76 states have return successors, (105), 103 states have call predecessors, (105), 97 states have call successors, (105) [2024-11-09 07:21:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 815 transitions. [2024-11-09 07:21:12,709 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 815 transitions. Word has length 47 [2024-11-09 07:21:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:12,710 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 815 transitions. [2024-11-09 07:21:12,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:21:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 815 transitions. [2024-11-09 07:21:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 07:21:12,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:12,717 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:12,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:21:12,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:12,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 737707601, now seen corresponding path program 1 times [2024-11-09 07:21:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473224904] [2024-11-09 07:21:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:21:12,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473224904] [2024-11-09 07:21:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473224904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:12,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:21:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206664388] [2024-11-09 07:21:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:12,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:21:12,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:21:12,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:12,775 INFO L87 Difference]: Start difference. First operand 653 states and 815 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:21:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:12,932 INFO L93 Difference]: Finished difference Result 843 states and 1036 transitions. [2024-11-09 07:21:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:21:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-11-09 07:21:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:12,937 INFO L225 Difference]: With dead ends: 843 [2024-11-09 07:21:12,938 INFO L226 Difference]: Without dead ends: 570 [2024-11-09 07:21:12,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:12,940 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 264 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:12,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 318 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:21:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-09 07:21:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 461. [2024-11-09 07:21:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 336 states have (on average 1.2767857142857142) internal successors, (429), 340 states have internal predecessors, (429), 75 states have call successors, (75), 49 states have call predecessors, (75), 48 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-09 07:21:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 577 transitions. [2024-11-09 07:21:13,015 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 577 transitions. Word has length 53 [2024-11-09 07:21:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:13,016 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 577 transitions. [2024-11-09 07:21:13,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:21:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 577 transitions. [2024-11-09 07:21:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:21:13,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:13,021 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:13,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:21:13,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:13,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1010179164, now seen corresponding path program 1 times [2024-11-09 07:21:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464410400] [2024-11-09 07:21:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:13,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464410400] [2024-11-09 07:21:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464410400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:21:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125881498] [2024-11-09 07:21:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:13,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:21:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:21:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:21:13,153 INFO L87 Difference]: Start difference. First operand 461 states and 577 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 07:21:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:13,506 INFO L93 Difference]: Finished difference Result 564 states and 693 transitions. [2024-11-09 07:21:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:21:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 54 [2024-11-09 07:21:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:13,511 INFO L225 Difference]: With dead ends: 564 [2024-11-09 07:21:13,511 INFO L226 Difference]: Without dead ends: 561 [2024-11-09 07:21:13,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:21:13,514 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 485 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:13,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 289 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:21:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-09 07:21:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 460. [2024-11-09 07:21:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 336 states have (on average 1.2678571428571428) internal successors, (426), 339 states have internal predecessors, (426), 74 states have call successors, (74), 49 states have call predecessors, (74), 48 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-09 07:21:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 573 transitions. [2024-11-09 07:21:13,576 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 573 transitions. Word has length 54 [2024-11-09 07:21:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:13,579 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 573 transitions. [2024-11-09 07:21:13,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 07:21:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 573 transitions. [2024-11-09 07:21:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 07:21:13,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:13,582 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:13,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:21:13,582 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:13,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1251848010, now seen corresponding path program 1 times [2024-11-09 07:21:13,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:13,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406457137] [2024-11-09 07:21:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:13,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406457137] [2024-11-09 07:21:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406457137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058991585] [2024-11-09 07:21:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:13,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:13,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:13,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:21:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:13,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:21:13,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058991585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1729587809] [2024-11-09 07:21:14,509 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2024-11-09 07:21:14,510 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:14,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:14,519 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:14,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:19,680 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events1 with input of size 161 for LOIs [2024-11-09 07:21:19,760 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread1 with input of size 157 for LOIs [2024-11-09 07:21:19,812 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads1 with input of size 165 for LOIs [2024-11-09 07:21:20,741 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 161 for LOIs [2024-11-09 07:21:20,912 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 161 for LOIs [2024-11-09 07:21:21,084 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events1 with input of size 161 for LOIs [2024-11-09 07:21:21,177 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels1 with input of size 168 for LOIs [2024-11-09 07:21:21,279 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1729587809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [5, 5, 4] total 36 [2024-11-09 07:21:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931211150] [2024-11-09 07:21:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:37,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 07:21:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 07:21:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 07:21:37,239 INFO L87 Difference]: Start difference. First operand 460 states and 573 transitions. Second operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 7 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 07:21:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:50,663 INFO L93 Difference]: Finished difference Result 802 states and 966 transitions. [2024-11-09 07:21:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:21:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 7 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 55 [2024-11-09 07:21:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:50,669 INFO L225 Difference]: With dead ends: 802 [2024-11-09 07:21:50,669 INFO L226 Difference]: Without dead ends: 487 [2024-11-09 07:21:50,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 07:21:50,673 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 132 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:50,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1759 Invalid, 2962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-09 07:21:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-09 07:21:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 479. [2024-11-09 07:21:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 353 states have (on average 1.2634560906515582) internal successors, (446), 356 states have internal predecessors, (446), 75 states have call successors, (75), 50 states have call predecessors, (75), 49 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-09 07:21:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 595 transitions. [2024-11-09 07:21:50,770 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 595 transitions. Word has length 55 [2024-11-09 07:21:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:50,771 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 595 transitions. [2024-11-09 07:21:50,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 7 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 07:21:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 595 transitions. [2024-11-09 07:21:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 07:21:50,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:50,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:50,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:50,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:50,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:50,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1073609078, now seen corresponding path program 1 times [2024-11-09 07:21:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20155513] [2024-11-09 07:21:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:51,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20155513] [2024-11-09 07:21:51,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20155513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:51,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:51,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:21:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123425017] [2024-11-09 07:21:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:51,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:21:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:21:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:21:51,098 INFO L87 Difference]: Start difference. First operand 479 states and 595 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:21:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:52,003 INFO L93 Difference]: Finished difference Result 1122 states and 1609 transitions. [2024-11-09 07:21:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:21:52,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2024-11-09 07:21:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:52,009 INFO L225 Difference]: With dead ends: 1122 [2024-11-09 07:21:52,009 INFO L226 Difference]: Without dead ends: 988 [2024-11-09 07:21:52,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:21:52,012 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1020 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:52,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 964 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:21:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-09 07:21:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 977. [2024-11-09 07:21:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 762 states have (on average 1.3648293963254594) internal successors, (1040), 768 states have internal predecessors, (1040), 140 states have call successors, (140), 74 states have call predecessors, (140), 73 states have return successors, (181), 136 states have call predecessors, (181), 139 states have call successors, (181) [2024-11-09 07:21:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1361 transitions. [2024-11-09 07:21:52,138 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1361 transitions. Word has length 52 [2024-11-09 07:21:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:52,138 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1361 transitions. [2024-11-09 07:21:52,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:21:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1361 transitions. [2024-11-09 07:21:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 07:21:52,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:52,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:52,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:21:52,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:52,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1443836433, now seen corresponding path program 1 times [2024-11-09 07:21:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117532937] [2024-11-09 07:21:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:21:52,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117532937] [2024-11-09 07:21:52,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117532937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:52,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:52,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:21:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977812767] [2024-11-09 07:21:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:52,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:21:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:21:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:52,209 INFO L87 Difference]: Start difference. First operand 977 states and 1361 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:21:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:52,474 INFO L93 Difference]: Finished difference Result 1258 states and 1683 transitions. [2024-11-09 07:21:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:21:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-09 07:21:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:52,481 INFO L225 Difference]: With dead ends: 1258 [2024-11-09 07:21:52,482 INFO L226 Difference]: Without dead ends: 1089 [2024-11-09 07:21:52,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:52,484 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 42 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:52,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 516 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:21:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-09 07:21:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1012. [2024-11-09 07:21:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 791 states have (on average 1.3603034134007586) internal successors, (1076), 797 states have internal predecessors, (1076), 143 states have call successors, (143), 77 states have call predecessors, (143), 76 states have return successors, (184), 139 states have call predecessors, (184), 142 states have call successors, (184) [2024-11-09 07:21:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1403 transitions. [2024-11-09 07:21:52,625 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1403 transitions. Word has length 61 [2024-11-09 07:21:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:52,626 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1403 transitions. [2024-11-09 07:21:52,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:21:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1403 transitions. [2024-11-09 07:21:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 07:21:52,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:52,630 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:52,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:21:52,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:52,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1309439652, now seen corresponding path program 1 times [2024-11-09 07:21:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384977120] [2024-11-09 07:21:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 07:21:53,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384977120] [2024-11-09 07:21:53,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384977120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:53,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251836780] [2024-11-09 07:21:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:53,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:53,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:21:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:53,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:21:53,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:21:53,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:21:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251836780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:53,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:21:53,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 17 [2024-11-09 07:21:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480238454] [2024-11-09 07:21:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:53,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:21:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:21:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:21:53,285 INFO L87 Difference]: Start difference. First operand 1012 states and 1403 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 07:21:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:53,708 INFO L93 Difference]: Finished difference Result 1272 states and 1703 transitions. [2024-11-09 07:21:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:21:53,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 102 [2024-11-09 07:21:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:53,715 INFO L225 Difference]: With dead ends: 1272 [2024-11-09 07:21:53,715 INFO L226 Difference]: Without dead ends: 903 [2024-11-09 07:21:53,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-09 07:21:53,717 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 221 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:53,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1036 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:21:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-11-09 07:21:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 899. [2024-11-09 07:21:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 716 states have (on average 1.3798882681564246) internal successors, (988), 722 states have internal predecessors, (988), 122 states have call successors, (122), 60 states have call predecessors, (122), 59 states have return successors, (163), 118 states have call predecessors, (163), 121 states have call successors, (163) [2024-11-09 07:21:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1273 transitions. [2024-11-09 07:21:53,860 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1273 transitions. Word has length 102 [2024-11-09 07:21:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:53,861 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1273 transitions. [2024-11-09 07:21:53,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 07:21:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1273 transitions. [2024-11-09 07:21:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 07:21:53,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:53,868 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:53,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:21:54,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:21:54,069 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:54,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash 855112038, now seen corresponding path program 1 times [2024-11-09 07:21:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:54,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672026224] [2024-11-09 07:21:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:21:54,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672026224] [2024-11-09 07:21:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672026224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308224695] [2024-11-09 07:21:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:54,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:54,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:21:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:54,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:21:54,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 07:21:54,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 07:21:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308224695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1349167636] [2024-11-09 07:21:54,989 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2024-11-09 07:21:54,989 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:54,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:54,990 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:54,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:22:11,272 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events1 with input of size 199 for LOIs [2024-11-09 07:22:11,588 INFO L197 IcfgInterpreter]: Interpreting procedure error1 with input of size 170 for LOIs [2024-11-09 07:22:11,900 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread1 with input of size 120 for LOIs [2024-11-09 07:22:11,934 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads1 with input of size 184 for LOIs [2024-11-09 07:22:14,250 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 185 for LOIs [2024-11-09 07:22:16,137 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 134 for LOIs [2024-11-09 07:22:16,342 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events1 with input of size 178 for LOIs [2024-11-09 07:22:16,618 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels1 with input of size 189 for LOIs [2024-11-09 07:22:16,931 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:22:58,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23351#(and (= ~q_req_up~0 1) (exists ((v_~c_last_read~0_10 Int) (v_~q_free~0_44 Int)) (and (<= v_~q_free~0_44 1) (= ~T6_E~0 2) (= ~t6_i~0 0) (= ~t5_i~0 0) (<= 1 |#StackHeapBarrier|) (= 0 ~t5_pc~0) (= ~E_4~0 2) (= v_~c_last_read~0_10 0) (= ~t7_i~0 0) (= ~t1_pc~0 0) (<= ~p_dw_pc~0 1) (= 0 ~t7_pc~0) (= ~T4_E~0 2) (= ~E_7~0 2) (= 0 ~t4_st~0) (= ~T1_E~0 2) (= ~T5_E~0 2) (<= 0 ~p_dw_pc~0) (= ~m_st~0 0) (= ~E_5~0 2) (<= 0 ~p_num_write~0) (= ~T2_E~0 2) (= 1 ~c_dr_i~0) (= 0 ~t6_pc~0) (= 0 ~t5_st~0) (= ~E_3~0 2) (= 0 ~t3_pc~0) (= 0 ~t6_st~0) (= ~t2_i~0 0) (= ~E_6~0 2) (= ~t4_i~0 0) (= ~t1_st~0 0) (= ~c_num_read~0 1) (= ~T7_E~0 2) (= ~m_i~0 0) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~E_2~0 2) (or (and (exists ((|v_ULTIMATE.start_eval1_~tmp___1~0#1_25| Int)) (and (not (= |v_ULTIMATE.start_eval1_~tmp___1~0#1_25| 0)) (<= |v_ULTIMATE.start_eval1_~tmp___1~0#1_25| 1) (<= 0 |v_ULTIMATE.start_eval1_~tmp___1~0#1_25|))) (= ~p_dw_pc~0 1) (= 2 ~p_dw_st~0) (exists ((|v_ULTIMATE.start_eval1_~tmp~2#1_19| Int)) (and (<= |v_ULTIMATE.start_eval1_~tmp~2#1_19| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval1_~tmp~2#1_19| 2147483648)) (not (= |v_ULTIMATE.start_eval1_~tmp~2#1_19| 0))))) (and (exists ((|v_ULTIMATE.start_eval1_~tmp___1~0#1_25| Int)) (and (not (= |v_ULTIMATE.start_eval1_~tmp___1~0#1_25| 0)) (<= |v_ULTIMATE.start_eval1_~tmp___1~0#1_25| 1) (<= 0 |v_ULTIMATE.start_eval1_~tmp___1~0#1_25|))) (not (= ~p_dw_st~0 0)))) (= ~T3_E~0 2) (= ~local~0 0) (= ~t3_i~0 0) (= 0 ~t7_st~0) (= ~token~0 0) (= ~m_pc~0 0) (= ~p_dw_i~0 1) (= 0 ~t2_pc~0) (<= ~p_last_write~0 2147483647) (= ~E_M~0 2) (= ~a_t~0 0) (= 0 ~t2_st~0) (= 0 ~t4_pc~0) (= ~E_1~0 2) (= 0 ~t3_st~0) (= ~M_E~0 2) (<= 0 v_~q_free~0_44) (not (= v_~q_free~0_44 1)) (= ~t1_i~0 0))) (= ~q_free~0 1) (exists ((|v_ULTIMATE.start_eval1_~tmp___0~2#1_16| Int)) (and (not (= |v_ULTIMATE.start_eval1_~tmp___0~2#1_16| 0)) (<= |v_ULTIMATE.start_eval1_~tmp___0~2#1_16| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval1_~tmp___0~2#1_16| 2147483648)))) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_dr_pc~0 0) (= ~c_last_read~0 ~p_last_write~0) (= ~c_dr_st~0 1))' at error location [2024-11-09 07:22:58,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:22:58,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:22:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2024-11-09 07:22:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734080726] [2024-11-09 07:22:58,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:58,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:22:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:22:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2973, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 07:22:58,937 INFO L87 Difference]: Start difference. First operand 899 states and 1273 transitions. Second operand has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-09 07:23:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:02,775 INFO L93 Difference]: Finished difference Result 1839 states and 2360 transitions. [2024-11-09 07:23:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-09 07:23:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) Word has length 104 [2024-11-09 07:23:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:02,785 INFO L225 Difference]: With dead ends: 1839 [2024-11-09 07:23:02,785 INFO L226 Difference]: Without dead ends: 1657 [2024-11-09 07:23:02,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 272 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 4820 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=1088, Invalid=12252, Unknown=0, NotChecked=0, Total=13340 [2024-11-09 07:23:02,792 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 1223 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:02,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1690 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 07:23:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-09 07:23:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1294. [2024-11-09 07:23:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1001 states have (on average 1.3216783216783217) internal successors, (1323), 1007 states have internal predecessors, (1323), 180 states have call successors, (180), 112 states have call predecessors, (180), 111 states have return successors, (221), 176 states have call predecessors, (221), 179 states have call successors, (221) [2024-11-09 07:23:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1724 transitions. [2024-11-09 07:23:03,000 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1724 transitions. Word has length 104 [2024-11-09 07:23:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:03,001 INFO L471 AbstractCegarLoop]: Abstraction has 1294 states and 1724 transitions. [2024-11-09 07:23:03,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-09 07:23:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1724 transitions. [2024-11-09 07:23:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 07:23:03,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:03,004 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:03,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 07:23:03,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:03,208 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:03,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:03,209 INFO L85 PathProgramCache]: Analyzing trace with hash 533101598, now seen corresponding path program 1 times [2024-11-09 07:23:03,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:03,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304720320] [2024-11-09 07:23:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:03,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 07:23:03,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304720320] [2024-11-09 07:23:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304720320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:23:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:23:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474411915] [2024-11-09 07:23:03,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:03,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:03,305 INFO L87 Difference]: Start difference. First operand 1294 states and 1724 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-09 07:23:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:03,639 INFO L93 Difference]: Finished difference Result 1793 states and 2296 transitions. [2024-11-09 07:23:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2024-11-09 07:23:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:03,646 INFO L225 Difference]: With dead ends: 1793 [2024-11-09 07:23:03,646 INFO L226 Difference]: Without dead ends: 1284 [2024-11-09 07:23:03,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:03,649 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 267 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:03,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 347 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-09 07:23:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1275. [2024-11-09 07:23:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 984 states have (on average 1.3119918699186992) internal successors, (1291), 990 states have internal predecessors, (1291), 179 states have call successors, (179), 111 states have call predecessors, (179), 110 states have return successors, (220), 175 states have call predecessors, (220), 178 states have call successors, (220) [2024-11-09 07:23:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1690 transitions. [2024-11-09 07:23:03,853 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1690 transitions. Word has length 108 [2024-11-09 07:23:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:03,854 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1690 transitions. [2024-11-09 07:23:03,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-09 07:23:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1690 transitions. [2024-11-09 07:23:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 07:23:03,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:03,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:03,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:23:03,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:03,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1642016245, now seen corresponding path program 1 times [2024-11-09 07:23:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046352630] [2024-11-09 07:23:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 07:23:04,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046352630] [2024-11-09 07:23:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046352630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838372570] [2024-11-09 07:23:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:04,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:04,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:23:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:04,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:23:04,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 07:23:04,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:23:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838372570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:04,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:23:04,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 07:23:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652593023] [2024-11-09 07:23:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:04,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:04,224 INFO L87 Difference]: Start difference. First operand 1275 states and 1690 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:04,616 INFO L93 Difference]: Finished difference Result 2523 states and 3669 transitions. [2024-11-09 07:23:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2024-11-09 07:23:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:04,627 INFO L225 Difference]: With dead ends: 2523 [2024-11-09 07:23:04,627 INFO L226 Difference]: Without dead ends: 1891 [2024-11-09 07:23:04,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:04,632 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 263 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:04,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 405 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-09 07:23:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1884. [2024-11-09 07:23:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1486 states have (on average 1.3553162853297442) internal successors, (2014), 1495 states have internal predecessors, (2014), 256 states have call successors, (256), 141 states have call predecessors, (256), 140 states have return successors, (335), 249 states have call predecessors, (335), 255 states have call successors, (335) [2024-11-09 07:23:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2605 transitions. [2024-11-09 07:23:04,908 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2605 transitions. Word has length 102 [2024-11-09 07:23:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:04,908 INFO L471 AbstractCegarLoop]: Abstraction has 1884 states and 2605 transitions. [2024-11-09 07:23:04,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2605 transitions. [2024-11-09 07:23:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 07:23:04,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:04,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:04,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:23:05,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 07:23:05,113 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:05,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1068113545, now seen corresponding path program 1 times [2024-11-09 07:23:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:05,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858212112] [2024-11-09 07:23:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 07:23:05,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858212112] [2024-11-09 07:23:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858212112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543942858] [2024-11-09 07:23:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:05,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:05,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:05,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:23:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:05,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:23:05,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 07:23:05,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:23:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543942858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:23:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 07:23:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356778751] [2024-11-09 07:23:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:05,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:05,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:05,460 INFO L87 Difference]: Start difference. First operand 1884 states and 2605 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:05,854 INFO L93 Difference]: Finished difference Result 4335 states and 6461 transitions. [2024-11-09 07:23:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2024-11-09 07:23:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:05,874 INFO L225 Difference]: With dead ends: 4335 [2024-11-09 07:23:05,874 INFO L226 Difference]: Without dead ends: 3094 [2024-11-09 07:23:05,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:05,882 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 260 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:05,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 400 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2024-11-09 07:23:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3082. [2024-11-09 07:23:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 2475 states have (on average 1.385858585858586) internal successors, (3430), 2490 states have internal predecessors, (3430), 405 states have call successors, (405), 201 states have call predecessors, (405), 200 states have return successors, (556), 392 states have call predecessors, (556), 404 states have call successors, (556) [2024-11-09 07:23:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4391 transitions. [2024-11-09 07:23:06,280 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4391 transitions. Word has length 102 [2024-11-09 07:23:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:06,280 INFO L471 AbstractCegarLoop]: Abstraction has 3082 states and 4391 transitions. [2024-11-09 07:23:06,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4391 transitions. [2024-11-09 07:23:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 07:23:06,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:06,286 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:06,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:23:06,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:06,487 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:06,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1256346315, now seen corresponding path program 1 times [2024-11-09 07:23:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682431226] [2024-11-09 07:23:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 07:23:06,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:06,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682431226] [2024-11-09 07:23:06,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682431226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:06,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708534168] [2024-11-09 07:23:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:06,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:06,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:23:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:06,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:23:06,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 07:23:06,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:23:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708534168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:23:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 07:23:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637593403] [2024-11-09 07:23:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:06,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:06,862 INFO L87 Difference]: Start difference. First operand 3082 states and 4391 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:07,553 INFO L93 Difference]: Finished difference Result 7899 states and 11904 transitions. [2024-11-09 07:23:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:07,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2024-11-09 07:23:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:07,583 INFO L225 Difference]: With dead ends: 7899 [2024-11-09 07:23:07,584 INFO L226 Difference]: Without dead ends: 5460 [2024-11-09 07:23:07,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:07,596 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 254 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:07,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 400 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:07,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2024-11-09 07:23:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5438. [2024-11-09 07:23:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 4423 states have (on average 1.4022156907076644) internal successors, (6202), 4450 states have internal predecessors, (6202), 693 states have call successors, (693), 321 states have call predecessors, (693), 320 states have return successors, (980), 668 states have call predecessors, (980), 692 states have call successors, (980) [2024-11-09 07:23:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 7875 transitions. [2024-11-09 07:23:08,183 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 7875 transitions. Word has length 102 [2024-11-09 07:23:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:08,184 INFO L471 AbstractCegarLoop]: Abstraction has 5438 states and 7875 transitions. [2024-11-09 07:23:08,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:23:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 7875 transitions. [2024-11-09 07:23:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 07:23:08,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:08,192 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:08,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:23:08,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:23:08,393 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:08,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1616863373, now seen corresponding path program 1 times [2024-11-09 07:23:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609180491] [2024-11-09 07:23:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:08,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:23:08,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609180491] [2024-11-09 07:23:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609180491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:08,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:23:08,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:23:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424262701] [2024-11-09 07:23:08,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:08,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:08,513 INFO L87 Difference]: Start difference. First operand 5438 states and 7875 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:23:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:09,281 INFO L93 Difference]: Finished difference Result 10432 states and 15624 transitions. [2024-11-09 07:23:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-09 07:23:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:09,325 INFO L225 Difference]: With dead ends: 10432 [2024-11-09 07:23:09,325 INFO L226 Difference]: Without dead ends: 6590 [2024-11-09 07:23:09,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:09,342 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 90 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:09,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 585 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2024-11-09 07:23:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6206. [2024-11-09 07:23:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6206 states, 5159 states have (on average 1.4301221166892808) internal successors, (7378), 5186 states have internal predecessors, (7378), 709 states have call successors, (709), 337 states have call predecessors, (709), 336 states have return successors, (996), 684 states have call predecessors, (996), 708 states have call successors, (996) [2024-11-09 07:23:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 9083 transitions. [2024-11-09 07:23:09,901 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 9083 transitions. Word has length 102 [2024-11-09 07:23:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:09,902 INFO L471 AbstractCegarLoop]: Abstraction has 6206 states and 9083 transitions. [2024-11-09 07:23:09,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:23:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 9083 transitions. [2024-11-09 07:23:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 07:23:09,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:09,910 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:09,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 07:23:09,911 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:09,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1113498896, now seen corresponding path program 1 times [2024-11-09 07:23:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536741549] [2024-11-09 07:23:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 07:23:10,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536741549] [2024-11-09 07:23:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536741549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492965919] [2024-11-09 07:23:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:10,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:10,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:10,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:23:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:10,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:23:10,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:23:10,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:23:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492965919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:23:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-09 07:23:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120091206] [2024-11-09 07:23:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:10,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:23:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:23:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:23:10,323 INFO L87 Difference]: Start difference. First operand 6206 states and 9083 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 07:23:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:11,174 INFO L93 Difference]: Finished difference Result 6726 states and 9677 transitions. [2024-11-09 07:23:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:23:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 112 [2024-11-09 07:23:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:11,225 INFO L225 Difference]: With dead ends: 6726 [2024-11-09 07:23:11,225 INFO L226 Difference]: Without dead ends: 6177 [2024-11-09 07:23:11,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:23:11,230 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 44 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:11,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1292 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:23:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2024-11-09 07:23:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 6117. [2024-11-09 07:23:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 5098 states have (on average 1.4335033346410357) internal successors, (7308), 5125 states have internal predecessors, (7308), 694 states have call successors, (694), 324 states have call predecessors, (694), 323 states have return successors, (981), 669 states have call predecessors, (981), 693 states have call successors, (981) [2024-11-09 07:23:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 8983 transitions. [2024-11-09 07:23:11,864 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 8983 transitions. Word has length 112 [2024-11-09 07:23:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:11,865 INFO L471 AbstractCegarLoop]: Abstraction has 6117 states and 8983 transitions. [2024-11-09 07:23:11,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 07:23:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 8983 transitions. [2024-11-09 07:23:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-09 07:23:11,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:11,874 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:11,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:23:12,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:12,075 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:12,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2137326694, now seen corresponding path program 1 times [2024-11-09 07:23:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144285292] [2024-11-09 07:23:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 07:23:12,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144285292] [2024-11-09 07:23:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144285292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:12,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:23:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:23:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330125998] [2024-11-09 07:23:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:12,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:23:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:23:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:23:12,246 INFO L87 Difference]: Start difference. First operand 6117 states and 8983 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 07:23:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:13,080 INFO L93 Difference]: Finished difference Result 6866 states and 9828 transitions. [2024-11-09 07:23:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:23:13,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 113 [2024-11-09 07:23:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:13,108 INFO L225 Difference]: With dead ends: 6866 [2024-11-09 07:23:13,109 INFO L226 Difference]: Without dead ends: 6409 [2024-11-09 07:23:13,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:23:13,114 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 256 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:13,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1160 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:23:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2024-11-09 07:23:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 6375. [2024-11-09 07:23:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6375 states, 5260 states have (on average 1.423574144486692) internal successors, (7488), 5293 states have internal predecessors, (7488), 742 states have call successors, (742), 366 states have call predecessors, (742), 371 states have return successors, (1041), 717 states have call predecessors, (1041), 741 states have call successors, (1041) [2024-11-09 07:23:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 9271 transitions. [2024-11-09 07:23:13,875 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 9271 transitions. Word has length 113 [2024-11-09 07:23:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:13,876 INFO L471 AbstractCegarLoop]: Abstraction has 6375 states and 9271 transitions. [2024-11-09 07:23:13,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 07:23:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 9271 transitions. [2024-11-09 07:23:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 07:23:13,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:13,889 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:13,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 07:23:13,890 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:13,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1141120347, now seen corresponding path program 1 times [2024-11-09 07:23:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:13,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699632249] [2024-11-09 07:23:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:23:14,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699632249] [2024-11-09 07:23:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699632249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285852440] [2024-11-09 07:23:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:14,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:14,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:23:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:14,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 07:23:14,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:23:15,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 07:23:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285852440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:17,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474024622] [2024-11-09 07:23:17,529 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-09 07:23:17,529 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:17,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:17,530 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:17,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:47,968 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events1 with input of size 210 for LOIs [2024-11-09 07:23:48,208 INFO L197 IcfgInterpreter]: Interpreting procedure error1 with input of size 13 for LOIs [2024-11-09 07:23:48,210 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread1 with input of size 7 for LOIs [2024-11-09 07:23:48,213 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads1 with input of size 174 for LOIs [2024-11-09 07:23:49,280 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 175 for LOIs [2024-11-09 07:23:50,188 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 28 for LOIs [2024-11-09 07:23:50,229 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events1 with input of size 168 for LOIs [2024-11-09 07:23:50,385 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels1 with input of size 179 for LOIs [2024-11-09 07:23:50,562 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:05,281 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122812#(and (= ~q_req_up~0 1) (= ~q_free~0 1) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~c_last_read~0 ~p_last_write~0))' at error location [2024-11-09 07:24:05,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:05,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 50 [2024-11-09 07:24:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352514561] [2024-11-09 07:24:05,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:05,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 07:24:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 07:24:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=8884, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 07:24:05,287 INFO L87 Difference]: Start difference. First operand 6375 states and 9271 transitions. Second operand has 50 states, 31 states have (on average 5.419354838709677) internal successors, (168), 38 states have internal predecessors, (168), 20 states have call successors, (41), 15 states have call predecessors, (41), 23 states have return successors, (43), 18 states have call predecessors, (43), 20 states have call successors, (43) [2024-11-09 07:24:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:15,603 INFO L93 Difference]: Finished difference Result 8498 states and 11843 transitions. [2024-11-09 07:24:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-09 07:24:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 31 states have (on average 5.419354838709677) internal successors, (168), 38 states have internal predecessors, (168), 20 states have call successors, (41), 15 states have call predecessors, (41), 23 states have return successors, (43), 18 states have call predecessors, (43), 20 states have call successors, (43) Word has length 114 [2024-11-09 07:24:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:15,635 INFO L225 Difference]: With dead ends: 8498 [2024-11-09 07:24:15,635 INFO L226 Difference]: Without dead ends: 7783 [2024-11-09 07:24:15,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 278 SyntacticMatches, 12 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 18450 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=5867, Invalid=43195, Unknown=0, NotChecked=0, Total=49062 [2024-11-09 07:24:15,654 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 4231 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 4553 mSolverCounterSat, 2065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2065 IncrementalHoareTripleChecker+Valid, 4553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:15,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 3553 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2065 Valid, 4553 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 07:24:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2024-11-09 07:24:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 6375. [2024-11-09 07:24:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6375 states, 5260 states have (on average 1.4228136882129279) internal successors, (7484), 5293 states have internal predecessors, (7484), 742 states have call successors, (742), 366 states have call predecessors, (742), 371 states have return successors, (1041), 717 states have call predecessors, (1041), 741 states have call successors, (1041) [2024-11-09 07:24:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 9267 transitions. [2024-11-09 07:24:16,405 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 9267 transitions. Word has length 114 [2024-11-09 07:24:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:16,405 INFO L471 AbstractCegarLoop]: Abstraction has 6375 states and 9267 transitions. [2024-11-09 07:24:16,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 31 states have (on average 5.419354838709677) internal successors, (168), 38 states have internal predecessors, (168), 20 states have call successors, (41), 15 states have call predecessors, (41), 23 states have return successors, (43), 18 states have call predecessors, (43), 20 states have call successors, (43) [2024-11-09 07:24:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 9267 transitions. [2024-11-09 07:24:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 07:24:16,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:16,416 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:16,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:16,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:16,616 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:16,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1616533755, now seen corresponding path program 1 times [2024-11-09 07:24:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044382619] [2024-11-09 07:24:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 07:24:16,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044382619] [2024-11-09 07:24:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044382619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629740165] [2024-11-09 07:24:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:16,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:16,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:16,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:16,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:24:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:17,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 07:24:17,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 07:24:17,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 07:24:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629740165] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:17,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:24:17,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 20 [2024-11-09 07:24:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276616859] [2024-11-09 07:24:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:24:17,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:24:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:24:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:24:17,355 INFO L87 Difference]: Start difference. First operand 6375 states and 9267 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 07:24:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:18,606 INFO L93 Difference]: Finished difference Result 7247 states and 10276 transitions. [2024-11-09 07:24:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:24:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2024-11-09 07:24:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:18,634 INFO L225 Difference]: With dead ends: 7247 [2024-11-09 07:24:18,635 INFO L226 Difference]: Without dead ends: 6532 [2024-11-09 07:24:18,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-09 07:24:18,640 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 381 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:18,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 761 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:24:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2024-11-09 07:24:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6354. [2024-11-09 07:24:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 5232 states have (on average 1.4237385321100917) internal successors, (7449), 5268 states have internal predecessors, (7449), 745 states have call successors, (745), 363 states have call predecessors, (745), 375 states have return successors, (1060), 724 states have call predecessors, (1060), 744 states have call successors, (1060) [2024-11-09 07:24:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9254 transitions. [2024-11-09 07:24:19,569 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9254 transitions. Word has length 115 [2024-11-09 07:24:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:19,569 INFO L471 AbstractCegarLoop]: Abstraction has 6354 states and 9254 transitions. [2024-11-09 07:24:19,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 07:24:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9254 transitions. [2024-11-09 07:24:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 07:24:19,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:19,580 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:19,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:24:19,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:19,781 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:19,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1841313433, now seen corresponding path program 1 times [2024-11-09 07:24:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106058337] [2024-11-09 07:24:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:24:20,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106058337] [2024-11-09 07:24:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106058337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195787478] [2024-11-09 07:24:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:20,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:20,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:24:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:20,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 07:24:20,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 60 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:24:21,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:24:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195787478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1288518897] [2024-11-09 07:24:24,294 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2024-11-09 07:24:24,294 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:24,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:24,295 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:24,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:38,811 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events1 with input of size 211 for LOIs [2024-11-09 07:24:38,999 INFO L197 IcfgInterpreter]: Interpreting procedure error1 with input of size 77 for LOIs [2024-11-09 07:24:39,027 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread1 with input of size 7 for LOIs [2024-11-09 07:24:39,031 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads1 with input of size 175 for LOIs [2024-11-09 07:24:40,004 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 176 for LOIs [2024-11-09 07:24:41,263 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 21 for LOIs [2024-11-09 07:24:41,291 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events1 with input of size 169 for LOIs [2024-11-09 07:24:41,460 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels1 with input of size 180 for LOIs [2024-11-09 07:24:41,653 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:58,852 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '162182#(and (= ~q_req_up~0 1) (exists ((v_~q_free~0_108 Int) (v_~q_req_up~0_113 Int)) (and (or (exists ((v_~p_dw_pc~0_50 Int) (v_~p_dw_st~0_140 Int)) (and (or (and (= v_~p_dw_st~0_140 1) (= v_~q_req_up~0_113 1) (<= 0 (+ ~p_last_write~0 2147483648)) (<= ~p_last_write~0 2147483647)) (and (= v_~p_dw_st~0_140 1) (= v_~p_dw_pc~0_50 0))) (or (and (exists ((|v_ULTIMATE.start_eval1_~tmp~2#1_70| Int)) (and (not (= |v_ULTIMATE.start_eval1_~tmp~2#1_70| 0)) (<= |v_ULTIMATE.start_eval1_~tmp~2#1_70| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval1_~tmp~2#1_70| 2147483648)))) (= v_~p_dw_pc~0_50 1)) (and (exists ((|v_ULTIMATE.start_eval1_~tmp~2#1_70| Int)) (and (not (= |v_ULTIMATE.start_eval1_~tmp~2#1_70| 0)) (<= |v_ULTIMATE.start_eval1_~tmp~2#1_70| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval1_~tmp~2#1_70| 2147483648)))) (= v_~p_dw_pc~0_50 0))))) (= ~p_dw_st~0 0)) (or (and (= ~p_dw_pc~0 1) (= 2 ~p_dw_st~0) (= v_~q_free~0_108 0)) (and (<= v_~q_free~0_108 1) (<= 0 ~p_dw_pc~0) (= ~p_dw_st~0 0))))) (= ~q_free~0 1) (= ~c_dr_pc~0 1) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_last_read~0 ~p_last_write~0) (exists ((|v_ULTIMATE.start_eval1_~tmp___0~2#1_44| Int)) (and (<= |v_ULTIMATE.start_eval1_~tmp___0~2#1_44| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval1_~tmp___0~2#1_44| 2147483648)) (not (= |v_ULTIMATE.start_eval1_~tmp___0~2#1_44| 0)))) (= ~c_dr_st~0 1))' at error location [2024-11-09 07:24:58,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:58,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:58,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 21] total 59 [2024-11-09 07:24:58,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161219601] [2024-11-09 07:24:58,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:58,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 07:24:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:58,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 07:24:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=11376, Unknown=0, NotChecked=0, Total=12432 [2024-11-09 07:24:58,856 INFO L87 Difference]: Start difference. First operand 6354 states and 9254 transitions. Second operand has 59 states, 39 states have (on average 5.512820512820513) internal successors, (215), 43 states have internal predecessors, (215), 26 states have call successors, (49), 18 states have call predecessors, (49), 23 states have return successors, (51), 25 states have call predecessors, (51), 26 states have call successors, (51) [2024-11-09 07:25:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:31,909 INFO L93 Difference]: Finished difference Result 10389 states and 13992 transitions. [2024-11-09 07:25:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 363 states. [2024-11-09 07:25:31,910 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 39 states have (on average 5.512820512820513) internal successors, (215), 43 states have internal predecessors, (215), 26 states have call successors, (49), 18 states have call predecessors, (49), 23 states have return successors, (51), 25 states have call predecessors, (51), 26 states have call successors, (51) Word has length 124 [2024-11-09 07:25:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:31,944 INFO L225 Difference]: With dead ends: 10389 [2024-11-09 07:25:31,945 INFO L226 Difference]: Without dead ends: 9698 [2024-11-09 07:25:31,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 362 SyntacticMatches, 3 SemanticMatches, 467 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 96046 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=22485, Invalid=197007, Unknown=0, NotChecked=0, Total=219492 [2024-11-09 07:25:31,985 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 10340 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 7681 mSolverCounterSat, 5582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10344 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 13263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5582 IncrementalHoareTripleChecker+Valid, 7681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:31,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10344 Valid, 3595 Invalid, 13263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5582 Valid, 7681 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-09 07:25:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9698 states. [2024-11-09 07:25:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9698 to 7864. [2024-11-09 07:25:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7864 states, 6291 states have (on average 1.3765697027499602) internal successors, (8660), 6339 states have internal predecessors, (8660), 972 states have call successors, (972), 551 states have call predecessors, (972), 599 states have return successors, (1343), 975 states have call predecessors, (1343), 971 states have call successors, (1343) [2024-11-09 07:25:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 10975 transitions. [2024-11-09 07:25:33,487 INFO L78 Accepts]: Start accepts. Automaton has 7864 states and 10975 transitions. Word has length 124 [2024-11-09 07:25:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:33,491 INFO L471 AbstractCegarLoop]: Abstraction has 7864 states and 10975 transitions. [2024-11-09 07:25:33,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 39 states have (on average 5.512820512820513) internal successors, (215), 43 states have internal predecessors, (215), 26 states have call successors, (49), 18 states have call predecessors, (49), 23 states have return successors, (51), 25 states have call predecessors, (51), 26 states have call successors, (51) [2024-11-09 07:25:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7864 states and 10975 transitions. [2024-11-09 07:25:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 07:25:33,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:33,505 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:33,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:25:33,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:33,706 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:33,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:33,706 INFO L85 PathProgramCache]: Analyzing trace with hash -239939607, now seen corresponding path program 1 times [2024-11-09 07:25:33,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165304336] [2024-11-09 07:25:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 07:25:33,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:33,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165304336] [2024-11-09 07:25:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165304336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50745183] [2024-11-09 07:25:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:33,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:33,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:33,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:25:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:34,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:25:34,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 07:25:34,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 07:25:34,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50745183] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:34,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:25:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 10] total 17 [2024-11-09 07:25:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390180281] [2024-11-09 07:25:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:34,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:25:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:25:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:25:34,396 INFO L87 Difference]: Start difference. First operand 7864 states and 10975 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 07:25:35,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:35,849 INFO L93 Difference]: Finished difference Result 8306 states and 11467 transitions. [2024-11-09 07:25:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:25:35,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-09 07:25:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:35,874 INFO L225 Difference]: With dead ends: 8306 [2024-11-09 07:25:35,874 INFO L226 Difference]: Without dead ends: 5569 [2024-11-09 07:25:35,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:25:35,883 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 587 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:35,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 467 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:25:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2024-11-09 07:25:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 5569. [2024-11-09 07:25:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 4696 states have (on average 1.4574105621805793) internal successors, (6844), 4721 states have internal predecessors, (6844), 616 states have call successors, (616), 256 states have call predecessors, (616), 256 states have return successors, (904), 592 states have call predecessors, (904), 616 states have call successors, (904) [2024-11-09 07:25:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 8364 transitions. [2024-11-09 07:25:36,699 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 8364 transitions. Word has length 125 [2024-11-09 07:25:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:36,699 INFO L471 AbstractCegarLoop]: Abstraction has 5569 states and 8364 transitions. [2024-11-09 07:25:36,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 07:25:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 8364 transitions. [2024-11-09 07:25:36,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 07:25:36,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:36,713 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:36,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:25:36,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 07:25:36,917 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:36,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash 646385457, now seen corresponding path program 1 times [2024-11-09 07:25:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107722481] [2024-11-09 07:25:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 07:25:36,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107722481] [2024-11-09 07:25:36,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107722481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:36,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:36,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:25:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362004410] [2024-11-09 07:25:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:36,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:36,988 INFO L87 Difference]: Start difference. First operand 5569 states and 8364 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:38,221 INFO L93 Difference]: Finished difference Result 16518 states and 25301 transitions. [2024-11-09 07:25:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:38,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2024-11-09 07:25:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:38,272 INFO L225 Difference]: With dead ends: 16518 [2024-11-09 07:25:38,272 INFO L226 Difference]: Without dead ends: 10955 [2024-11-09 07:25:38,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:38,295 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 167 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:38,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 329 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:25:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2024-11-09 07:25:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10897. [2024-11-09 07:25:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10897 states, 9196 states have (on average 1.4462809917355373) internal successors, (13300), 9245 states have internal predecessors, (13300), 1188 states have call successors, (1188), 512 states have call predecessors, (1188), 512 states have return successors, (1732), 1140 states have call predecessors, (1732), 1188 states have call successors, (1732) [2024-11-09 07:25:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10897 states to 10897 states and 16220 transitions. [2024-11-09 07:25:39,395 INFO L78 Accepts]: Start accepts. Automaton has 10897 states and 16220 transitions. Word has length 138 [2024-11-09 07:25:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:39,396 INFO L471 AbstractCegarLoop]: Abstraction has 10897 states and 16220 transitions. [2024-11-09 07:25:39,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10897 states and 16220 transitions. [2024-11-09 07:25:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 07:25:39,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:39,418 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:39,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 07:25:39,419 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:39,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash -68412104, now seen corresponding path program 1 times [2024-11-09 07:25:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:39,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130394118] [2024-11-09 07:25:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 07:25:39,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:39,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130394118] [2024-11-09 07:25:39,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130394118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:25:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719311987] [2024-11-09 07:25:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:39,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:39,491 INFO L87 Difference]: Start difference. First operand 10897 states and 16220 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:41,497 INFO L93 Difference]: Finished difference Result 32326 states and 49025 transitions. [2024-11-09 07:25:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2024-11-09 07:25:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:41,573 INFO L225 Difference]: With dead ends: 32326 [2024-11-09 07:25:41,574 INFO L226 Difference]: Without dead ends: 21435 [2024-11-09 07:25:41,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:41,603 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 169 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:41,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 329 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:25:41,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21435 states. [2024-11-09 07:25:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21435 to 21321. [2024-11-09 07:25:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21321 states, 18004 states have (on average 1.4345700955343257) internal successors, (25828), 18101 states have internal predecessors, (25828), 2292 states have call successors, (2292), 1024 states have call predecessors, (2292), 1024 states have return successors, (3316), 2196 states have call predecessors, (3316), 2292 states have call successors, (3316) [2024-11-09 07:25:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21321 states to 21321 states and 31436 transitions. [2024-11-09 07:25:43,988 INFO L78 Accepts]: Start accepts. Automaton has 21321 states and 31436 transitions. Word has length 138 [2024-11-09 07:25:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:43,988 INFO L471 AbstractCegarLoop]: Abstraction has 21321 states and 31436 transitions. [2024-11-09 07:25:43,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 21321 states and 31436 transitions. [2024-11-09 07:25:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 07:25:44,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:44,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:44,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 07:25:44,021 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:44,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash 41640564, now seen corresponding path program 1 times [2024-11-09 07:25:44,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:44,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734808385] [2024-11-09 07:25:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:44,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 07:25:44,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734808385] [2024-11-09 07:25:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734808385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:25:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254784197] [2024-11-09 07:25:44,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:44,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:44,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:44,104 INFO L87 Difference]: Start difference. First operand 21321 states and 31436 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:47,913 INFO L93 Difference]: Finished difference Result 63246 states and 94913 transitions. [2024-11-09 07:25:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:47,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2024-11-09 07:25:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:48,069 INFO L225 Difference]: With dead ends: 63246 [2024-11-09 07:25:48,069 INFO L226 Difference]: Without dead ends: 41931 [2024-11-09 07:25:48,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:48,145 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 172 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:48,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:25:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41931 states. [2024-11-09 07:25:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41931 to 41705. [2024-11-09 07:25:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41705 states, 35236 states have (on average 1.4222953797252809) internal successors, (50116), 35429 states have internal predecessors, (50116), 4420 states have call successors, (4420), 2048 states have call predecessors, (4420), 2048 states have return successors, (6340), 4228 states have call predecessors, (6340), 4420 states have call successors, (6340) [2024-11-09 07:25:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41705 states to 41705 states and 60876 transitions. [2024-11-09 07:25:52,536 INFO L78 Accepts]: Start accepts. Automaton has 41705 states and 60876 transitions. Word has length 138 [2024-11-09 07:25:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:52,537 INFO L471 AbstractCegarLoop]: Abstraction has 41705 states and 60876 transitions. [2024-11-09 07:25:52,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 07:25:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41705 states and 60876 transitions. [2024-11-09 07:25:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 07:25:52,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:52,652 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:52,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 07:25:52,652 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:52,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash 892039279, now seen corresponding path program 1 times [2024-11-09 07:25:52,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:52,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981624943] [2024-11-09 07:25:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:52,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:25:53,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981624943] [2024-11-09 07:25:53,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981624943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071770723] [2024-11-09 07:25:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:53,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:53,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:53,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:53,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3230d4-e492-44d6-926c-786dd4b1263e/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:25:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:53,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:25:53,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 72 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:25:53,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 59 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:25:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071770723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:25:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1473656367] [2024-11-09 07:25:54,102 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2024-11-09 07:25:54,103 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:25:54,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:25:54,103 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:25:54,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:26:09,907 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events2 with input of size 221 for LOIs [2024-11-09 07:26:10,274 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread2 with input of size 82 for LOIs [2024-11-09 07:26:10,386 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels2 with input of size 82 for LOIs [2024-11-09 07:26:10,396 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 121 for LOIs [2024-11-09 07:26:10,826 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads2 with input of size 82 for LOIs [2024-11-09 07:26:14,050 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events2 with input of size 214 for LOIs [2024-11-09 07:26:14,400 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:26:43,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '442852#(and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (<= 1 |#StackHeapBarrier|) (<= ~local~0 2147483647) (= 0 ~t5_pc~0) (= ~c_num_read~0 0) (= ~q_buf_0~0 0) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= 0 ~t7_pc~0) (= ~p_last_write~0 0) (<= 0 (+ ~local~0 2147483648)) (= ~c_last_read~0 0) (= 0 ~c_dr_i~0) (= ~q_free~0 0) (= 0 ~t6_pc~0) (= 0 ~t3_pc~0) (= ~q_req_up~0 0) (= ~q_ev~0 0) (= ~m_pc~0 1) (= ~p_dw_i~0 0) (= ~m_i~0 1) (not (= ~token~0 (+ 7 ~local~0))) (= ~t6_i~0 1) (= ~p_dw_st~0 0) (= ~t7_i~0 1) (exists ((|v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_18| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_18| 0)) (<= |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_18| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval2_~tmp_ndt_1~0#1_18| 2147483648)))) (= ~t2_i~0 1) (= ~q_write_ev~0 0) (= ~c_dr_pc~0 0) (= 0 ~t2_pc~0) (= ~q_read_ev~0 0) (= ~m_st~0 1) (<= ~token~0 2147483647) (= ~t5_i~0 1) (= ~a_t~0 0) (= 0 ~t4_pc~0) (= ~t3_i~0 1) (= ~t4_i~0 1) (<= 0 (+ ~token~0 2147483648)) (exists ((|v_ULTIMATE.start_eval2_~tmp~5#1_19| Int)) (and (not (= |v_ULTIMATE.start_eval2_~tmp~5#1_19| 0)) (<= 0 |v_ULTIMATE.start_eval2_~tmp~5#1_19|) (<= |v_ULTIMATE.start_eval2_~tmp~5#1_19| 1))))' at error location [2024-11-09 07:26:43,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:26:43,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:26:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 21 [2024-11-09 07:26:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57438265] [2024-11-09 07:26:43,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:26:43,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 07:26:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 07:26:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=3769, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 07:26:43,376 INFO L87 Difference]: Start difference. First operand 41705 states and 60876 transitions. Second operand has 21 states, 14 states have (on average 18.071428571428573) internal successors, (253), 16 states have internal predecessors, (253), 10 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2024-11-09 07:26:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:26:56,850 INFO L93 Difference]: Finished difference Result 166889 states and 248040 transitions. [2024-11-09 07:26:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:26:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 18.071428571428573) internal successors, (253), 16 states have internal predecessors, (253), 10 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) Word has length 158 [2024-11-09 07:26:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:26:57,267 INFO L225 Difference]: With dead ends: 166889 [2024-11-09 07:26:57,267 INFO L226 Difference]: Without dead ends: 125191 [2024-11-09 07:26:57,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 386 SyntacticMatches, 53 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5282 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=1013, Invalid=8299, Unknown=0, NotChecked=0, Total=9312 [2024-11-09 07:26:57,414 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 2403 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:26:57,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 1011 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 07:26:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125191 states.