./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:07:13,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:13,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:14,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:14,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:14,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:14,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:14,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:14,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:14,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:14,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:14,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:14,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:14,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:14,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:14,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:14,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:14,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:14,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:14,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:14,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:14,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:14,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:14,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:14,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:14,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:14,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:14,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:14,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:14,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:14,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:14,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:14,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:14,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:14,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:14,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:14,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:14,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:14,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:14,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:14,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:14,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:07:14,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:14,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:14,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:14,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:14,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:07:14,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:07:14,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:14,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:14,093 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:14,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:14,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:07:14,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:14,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:07:14,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:14,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:07:14,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:07:14,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:07:14,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:07:14,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:14,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:14,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:07:14,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:14,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:14,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:07:14,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:14,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:14,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:07:14,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:07:14,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:14,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:07:14,100 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:07:14,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:07:14,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:07:14,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 [2022-11-02 20:07:14,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:14,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:14,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:14,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:14,466 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:14,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2022-11-02 20:07:14,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/data/335f48729/de1328a1e7ed448eaff9a929b96ca31e/FLAG81b431a71 [2022-11-02 20:07:15,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:15,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2022-11-02 20:07:15,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/data/335f48729/de1328a1e7ed448eaff9a929b96ca31e/FLAG81b431a71 [2022-11-02 20:07:15,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/data/335f48729/de1328a1e7ed448eaff9a929b96ca31e [2022-11-02 20:07:15,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:15,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:15,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:15,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:15,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:15,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:15" (1/1) ... [2022-11-02 20:07:15,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382d55d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:15, skipping insertion in model container [2022-11-02 20:07:15,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:15" (1/1) ... [2022-11-02 20:07:15,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:15,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:16,533 WARN L230 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_5f6e74e2-4205-42b5-af0d-14db4755d2da/sv-benchmarks/c/eca-rers2012/Problem03_label13.c[55139,55152] [2022-11-02 20:07:16,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:16,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:16,929 WARN L230 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_5f6e74e2-4205-42b5-af0d-14db4755d2da/sv-benchmarks/c/eca-rers2012/Problem03_label13.c[55139,55152] [2022-11-02 20:07:16,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:16,981 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:16,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16 WrapperNode [2022-11-02 20:07:16,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:16,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:16,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:16,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,199 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-02 20:07:17,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:17,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:17,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:17,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:17,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:17,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:17,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:17,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:17,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:17,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:17,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:17,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:07:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:07:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:17,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:17,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:17,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:20,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:20,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:20,471 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:07:20,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:20 BoogieIcfgContainer [2022-11-02 20:07:20,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:20,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:07:20,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:07:20,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:07:20,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:07:15" (1/3) ... [2022-11-02 20:07:20,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1321bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:20, skipping insertion in model container [2022-11-02 20:07:20,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (2/3) ... [2022-11-02 20:07:20,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1321bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:20, skipping insertion in model container [2022-11-02 20:07:20,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:20" (3/3) ... [2022-11-02 20:07:20,493 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2022-11-02 20:07:20,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:07:20,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:07:20,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:07:20,650 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@77f5349b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:07:20,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:07:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:20,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:20,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:20,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -233001789, now seen corresponding path program 1 times [2022-11-02 20:07:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464264578] [2022-11-02 20:07:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:21,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464264578] [2022-11-02 20:07:21,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464264578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:21,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:21,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353772557] [2022-11-02 20:07:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:21,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:22,069 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:23,735 INFO L93 Difference]: Finished difference Result 864 states and 1514 transitions. [2022-11-02 20:07:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:23,771 INFO L225 Difference]: With dead ends: 864 [2022-11-02 20:07:23,772 INFO L226 Difference]: Without dead ends: 468 [2022-11-02 20:07:23,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:23,784 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 123 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 167 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:07:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-02 20:07:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 454. [2022-11-02 20:07:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.6269315673289184) internal successors, (737), 453 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 737 transitions. [2022-11-02 20:07:23,891 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 737 transitions. Word has length 155 [2022-11-02 20:07:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:23,901 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 737 transitions. [2022-11-02 20:07:23,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 737 transitions. [2022-11-02 20:07:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 20:07:23,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:23,914 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:23,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:07:23,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1225907725, now seen corresponding path program 1 times [2022-11-02 20:07:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:23,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573938350] [2022-11-02 20:07:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:24,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573938350] [2022-11-02 20:07:24,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573938350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:24,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:24,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351969195] [2022-11-02 20:07:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:24,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:24,463 INFO L87 Difference]: Start difference. First operand 454 states and 737 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:25,831 INFO L93 Difference]: Finished difference Result 1330 states and 2169 transitions. [2022-11-02 20:07:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:25,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-11-02 20:07:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:25,836 INFO L225 Difference]: With dead ends: 1330 [2022-11-02 20:07:25,837 INFO L226 Difference]: Without dead ends: 878 [2022-11-02 20:07:25,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:25,840 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:25,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 163 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:07:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-02 20:07:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 874. [2022-11-02 20:07:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.52233676975945) internal successors, (1329), 873 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1329 transitions. [2022-11-02 20:07:25,882 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1329 transitions. Word has length 160 [2022-11-02 20:07:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:25,883 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1329 transitions. [2022-11-02 20:07:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1329 transitions. [2022-11-02 20:07:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-02 20:07:25,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:25,890 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:25,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:07:25,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash 948456388, now seen corresponding path program 1 times [2022-11-02 20:07:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043758459] [2022-11-02 20:07:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043758459] [2022-11-02 20:07:26,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043758459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:26,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:26,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125553733] [2022-11-02 20:07:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:26,186 INFO L87 Difference]: Start difference. First operand 874 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:27,474 INFO L93 Difference]: Finished difference Result 2575 states and 3935 transitions. [2022-11-02 20:07:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-11-02 20:07:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:27,482 INFO L225 Difference]: With dead ends: 2575 [2022-11-02 20:07:27,483 INFO L226 Difference]: Without dead ends: 1703 [2022-11-02 20:07:27,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:27,486 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:27,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:07:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-11-02 20:07:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1687. [2022-11-02 20:07:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 1.498220640569395) internal successors, (2526), 1686 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2526 transitions. [2022-11-02 20:07:27,540 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2526 transitions. Word has length 163 [2022-11-02 20:07:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:27,541 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2526 transitions. [2022-11-02 20:07:27,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2526 transitions. [2022-11-02 20:07:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:07:27,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:27,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:27,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:07:27,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 974158482, now seen corresponding path program 1 times [2022-11-02 20:07:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978539772] [2022-11-02 20:07:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:27,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:07:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978539772] [2022-11-02 20:07:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978539772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:28,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:28,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593014529] [2022-11-02 20:07:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:28,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:28,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:28,088 INFO L87 Difference]: Start difference. First operand 1687 states and 2526 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:29,435 INFO L93 Difference]: Finished difference Result 4194 states and 6260 transitions. [2022-11-02 20:07:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:29,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-11-02 20:07:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:29,447 INFO L225 Difference]: With dead ends: 4194 [2022-11-02 20:07:29,448 INFO L226 Difference]: Without dead ends: 2509 [2022-11-02 20:07:29,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:29,452 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:29,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 115 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:07:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-11-02 20:07:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2508. [2022-11-02 20:07:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 1.4654966094934185) internal successors, (3674), 2507 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3674 transitions. [2022-11-02 20:07:29,533 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3674 transitions. Word has length 172 [2022-11-02 20:07:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:29,534 INFO L495 AbstractCegarLoop]: Abstraction has 2508 states and 3674 transitions. [2022-11-02 20:07:29,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3674 transitions. [2022-11-02 20:07:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-02 20:07:29,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:29,541 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:29,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:07:29,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1777547190, now seen corresponding path program 1 times [2022-11-02 20:07:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321670911] [2022-11-02 20:07:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:30,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:30,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321670911] [2022-11-02 20:07:30,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321670911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:30,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:30,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323291691] [2022-11-02 20:07:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:30,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:30,355 INFO L87 Difference]: Start difference. First operand 2508 states and 3674 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:31,702 INFO L93 Difference]: Finished difference Result 6243 states and 9108 transitions. [2022-11-02 20:07:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-11-02 20:07:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:31,721 INFO L225 Difference]: With dead ends: 6243 [2022-11-02 20:07:31,721 INFO L226 Difference]: Without dead ends: 3737 [2022-11-02 20:07:31,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:31,726 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:31,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 155 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:07:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2022-11-02 20:07:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3726. [2022-11-02 20:07:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 3725 states have (on average 1.4112751677852349) internal successors, (5257), 3725 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 5257 transitions. [2022-11-02 20:07:31,833 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 5257 transitions. Word has length 174 [2022-11-02 20:07:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:31,833 INFO L495 AbstractCegarLoop]: Abstraction has 3726 states and 5257 transitions. [2022-11-02 20:07:31,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 5257 transitions. [2022-11-02 20:07:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-02 20:07:31,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:31,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:07:31,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:31,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1531262147, now seen corresponding path program 1 times [2022-11-02 20:07:31,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842773156] [2022-11-02 20:07:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:07:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:32,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842773156] [2022-11-02 20:07:32,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842773156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:32,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:32,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362399346] [2022-11-02 20:07:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:32,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:32,162 INFO L87 Difference]: Start difference. First operand 3726 states and 5257 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:33,528 INFO L93 Difference]: Finished difference Result 10904 states and 15407 transitions. [2022-11-02 20:07:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-11-02 20:07:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:33,560 INFO L225 Difference]: With dead ends: 10904 [2022-11-02 20:07:33,560 INFO L226 Difference]: Without dead ends: 7180 [2022-11-02 20:07:33,568 INFO L412 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 [2022-11-02 20:07:33,571 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 225 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:33,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 429 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:07:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2022-11-02 20:07:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 6163. [2022-11-02 20:07:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6163 states, 6162 states have (on average 1.294871794871795) internal successors, (7979), 6162 states have internal predecessors, (7979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6163 states to 6163 states and 7979 transitions. [2022-11-02 20:07:33,776 INFO L78 Accepts]: Start accepts. Automaton has 6163 states and 7979 transitions. Word has length 175 [2022-11-02 20:07:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:33,776 INFO L495 AbstractCegarLoop]: Abstraction has 6163 states and 7979 transitions. [2022-11-02 20:07:33,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6163 states and 7979 transitions. [2022-11-02 20:07:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:07:33,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:33,788 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:07:33,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1605526751, now seen corresponding path program 1 times [2022-11-02 20:07:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955326549] [2022-11-02 20:07:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:34,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955326549] [2022-11-02 20:07:34,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955326549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:34,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092395765] [2022-11-02 20:07:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:34,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:07:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:07:35,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:35,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092395765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:35,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:35,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-02 20:07:35,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471836709] [2022-11-02 20:07:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:35,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:35,376 INFO L87 Difference]: Start difference. First operand 6163 states and 7979 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:36,740 INFO L93 Difference]: Finished difference Result 17012 states and 22108 transitions. [2022-11-02 20:07:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-11-02 20:07:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:36,806 INFO L225 Difference]: With dead ends: 17012 [2022-11-02 20:07:36,806 INFO L226 Difference]: Without dead ends: 10851 [2022-11-02 20:07:36,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:36,816 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 106 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:36,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 167 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:07:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2022-11-02 20:07:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10647. [2022-11-02 20:07:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10647 states, 10646 states have (on average 1.2629156490700733) internal successors, (13445), 10646 states have internal predecessors, (13445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10647 states to 10647 states and 13445 transitions. [2022-11-02 20:07:37,168 INFO L78 Accepts]: Start accepts. Automaton has 10647 states and 13445 transitions. Word has length 181 [2022-11-02 20:07:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 10647 states and 13445 transitions. [2022-11-02 20:07:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10647 states and 13445 transitions. [2022-11-02 20:07:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-02 20:07:37,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:37,190 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:37,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:37,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:37,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1425017727, now seen corresponding path program 1 times [2022-11-02 20:07:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739708562] [2022-11-02 20:07:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:38,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:38,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739708562] [2022-11-02 20:07:38,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739708562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:38,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188544668] [2022-11-02 20:07:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:38,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:38,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:38,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:07:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:38,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:07:38,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:07:38,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:38,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188544668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:38,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:38,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:07:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049954177] [2022-11-02 20:07:38,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:38,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:38,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:38,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:38,587 INFO L87 Difference]: Start difference. First operand 10647 states and 13445 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:40,177 INFO L93 Difference]: Finished difference Result 29228 states and 37033 transitions. [2022-11-02 20:07:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2022-11-02 20:07:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:40,234 INFO L225 Difference]: With dead ends: 29228 [2022-11-02 20:07:40,234 INFO L226 Difference]: Without dead ends: 18583 [2022-11-02 20:07:40,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:40,247 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 97 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:40,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 399 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:07:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18583 states. [2022-11-02 20:07:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18583 to 18574. [2022-11-02 20:07:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18574 states, 18573 states have (on average 1.234803208959242) internal successors, (22934), 18573 states have internal predecessors, (22934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 22934 transitions. [2022-11-02 20:07:40,649 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 22934 transitions. Word has length 193 [2022-11-02 20:07:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:40,650 INFO L495 AbstractCegarLoop]: Abstraction has 18574 states and 22934 transitions. [2022-11-02 20:07:40,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 22934 transitions. [2022-11-02 20:07:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-02 20:07:40,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:40,677 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:40,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:40,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:40,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1807391862, now seen corresponding path program 1 times [2022-11-02 20:07:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:40,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139764205] [2022-11-02 20:07:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:07:41,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:41,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139764205] [2022-11-02 20:07:41,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139764205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:41,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:41,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532167886] [2022-11-02 20:07:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:41,432 INFO L87 Difference]: Start difference. First operand 18574 states and 22934 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:42,927 INFO L93 Difference]: Finished difference Result 44860 states and 56269 transitions. [2022-11-02 20:07:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2022-11-02 20:07:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:42,996 INFO L225 Difference]: With dead ends: 44860 [2022-11-02 20:07:42,997 INFO L226 Difference]: Without dead ends: 26491 [2022-11-02 20:07:43,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:43,019 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 176 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:43,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 203 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:07:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26491 states. [2022-11-02 20:07:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26491 to 26491. [2022-11-02 20:07:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26491 states, 26490 states have (on average 1.1830502076255192) internal successors, (31339), 26490 states have internal predecessors, (31339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26491 states to 26491 states and 31339 transitions. [2022-11-02 20:07:43,667 INFO L78 Accepts]: Start accepts. Automaton has 26491 states and 31339 transitions. Word has length 206 [2022-11-02 20:07:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:43,668 INFO L495 AbstractCegarLoop]: Abstraction has 26491 states and 31339 transitions. [2022-11-02 20:07:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26491 states and 31339 transitions. [2022-11-02 20:07:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-02 20:07:43,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:43,712 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:43,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:07:43,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 844524870, now seen corresponding path program 1 times [2022-11-02 20:07:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:43,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31210879] [2022-11-02 20:07:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:07:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31210879] [2022-11-02 20:07:44,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31210879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877492145] [2022-11-02 20:07:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:44,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:44,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:44,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:07:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:44,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:44,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-02 20:07:45,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:45,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877492145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:45,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:45,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-02 20:07:45,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022315505] [2022-11-02 20:07:45,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:45,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:45,059 INFO L87 Difference]: Start difference. First operand 26491 states and 31339 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:45,912 INFO L93 Difference]: Finished difference Result 78450 states and 92791 transitions. [2022-11-02 20:07:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2022-11-02 20:07:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:46,020 INFO L225 Difference]: With dead ends: 78450 [2022-11-02 20:07:46,021 INFO L226 Difference]: Without dead ends: 52164 [2022-11-02 20:07:46,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:46,053 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 320 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:46,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 596 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:07:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52164 states. [2022-11-02 20:07:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52164 to 52162. [2022-11-02 20:07:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52162 states, 52161 states have (on average 1.1806713828339181) internal successors, (61585), 52161 states have internal predecessors, (61585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52162 states to 52162 states and 61585 transitions. [2022-11-02 20:07:47,731 INFO L78 Accepts]: Start accepts. Automaton has 52162 states and 61585 transitions. Word has length 258 [2022-11-02 20:07:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:47,731 INFO L495 AbstractCegarLoop]: Abstraction has 52162 states and 61585 transitions. [2022-11-02 20:07:47,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 52162 states and 61585 transitions. [2022-11-02 20:07:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:07:47,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:47,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:47,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:07:48,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1012073035, now seen corresponding path program 1 times [2022-11-02 20:07:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:48,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053207371] [2022-11-02 20:07:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:07:49,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:49,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053207371] [2022-11-02 20:07:49,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053207371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:49,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559479403] [2022-11-02 20:07:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:49,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:49,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:49,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:49,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:07:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:49,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:49,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:07:49,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:49,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559479403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:49,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:49,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:07:49,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964729998] [2022-11-02 20:07:49,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:49,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:07:49,636 INFO L87 Difference]: Start difference. First operand 52162 states and 61585 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:52,111 INFO L93 Difference]: Finished difference Result 150597 states and 178484 transitions. [2022-11-02 20:07:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:07:52,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:07:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:52,303 INFO L225 Difference]: With dead ends: 150597 [2022-11-02 20:07:52,303 INFO L226 Difference]: Without dead ends: 98640 [2022-11-02 20:07:52,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:07:52,362 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 584 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:52,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 540 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:07:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98640 states. [2022-11-02 20:07:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98640 to 98588. [2022-11-02 20:07:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98588 states, 98587 states have (on average 1.1811902177771918) internal successors, (116450), 98587 states have internal predecessors, (116450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98588 states to 98588 states and 116450 transitions. [2022-11-02 20:07:54,945 INFO L78 Accepts]: Start accepts. Automaton has 98588 states and 116450 transitions. Word has length 266 [2022-11-02 20:07:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:54,946 INFO L495 AbstractCegarLoop]: Abstraction has 98588 states and 116450 transitions. [2022-11-02 20:07:54,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 98588 states and 116450 transitions. [2022-11-02 20:07:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-02 20:07:55,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:55,051 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:55,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:55,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1569244843, now seen corresponding path program 1 times [2022-11-02 20:07:55,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:55,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982951700] [2022-11-02 20:07:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:55,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 132 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:07:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982951700] [2022-11-02 20:07:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982951700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023635378] [2022-11-02 20:07:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:56,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:56,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:56,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:07:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:07:56,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:07:57,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:57,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023635378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:57,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:07:57,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:07:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909782042] [2022-11-02 20:07:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:57,202 INFO L87 Difference]: Start difference. First operand 98588 states and 116450 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:59,606 INFO L93 Difference]: Finished difference Result 244505 states and 288561 transitions. [2022-11-02 20:07:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2022-11-02 20:07:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:59,832 INFO L225 Difference]: With dead ends: 244505 [2022-11-02 20:07:59,832 INFO L226 Difference]: Without dead ends: 146122 [2022-11-02 20:07:59,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:59,923 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 156 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:59,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 206 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:08:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146122 states. [2022-11-02 20:08:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146122 to 135152. [2022-11-02 20:08:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135152 states, 135151 states have (on average 1.1671907718033903) internal successors, (157747), 135151 states have internal predecessors, (157747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135152 states to 135152 states and 157747 transitions. [2022-11-02 20:08:03,114 INFO L78 Accepts]: Start accepts. Automaton has 135152 states and 157747 transitions. Word has length 295 [2022-11-02 20:08:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:03,115 INFO L495 AbstractCegarLoop]: Abstraction has 135152 states and 157747 transitions. [2022-11-02 20:08:03,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 135152 states and 157747 transitions. [2022-11-02 20:08:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-02 20:08:03,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:03,230 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:03,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:08:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:03,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash -59881777, now seen corresponding path program 1 times [2022-11-02 20:08:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:03,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664817384] [2022-11-02 20:08:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-02 20:08:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:03,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664817384] [2022-11-02 20:08:03,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664817384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:03,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:03,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:03,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745476846] [2022-11-02 20:08:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:03,966 INFO L87 Difference]: Start difference. First operand 135152 states and 157747 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:06,320 INFO L93 Difference]: Finished difference Result 266911 states and 311355 transitions. [2022-11-02 20:08:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-02 20:08:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:06,523 INFO L225 Difference]: With dead ends: 266911 [2022-11-02 20:08:06,523 INFO L226 Difference]: Without dead ends: 131964 [2022-11-02 20:08:06,603 INFO L412 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 [2022-11-02 20:08:06,604 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 173 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:06,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 384 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:08:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131964 states. [2022-11-02 20:08:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131964 to 126017. [2022-11-02 20:08:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126017 states, 126016 states have (on average 1.153647155916709) internal successors, (145378), 126016 states have internal predecessors, (145378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126017 states to 126017 states and 145378 transitions. [2022-11-02 20:08:09,542 INFO L78 Accepts]: Start accepts. Automaton has 126017 states and 145378 transitions. Word has length 298 [2022-11-02 20:08:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:09,542 INFO L495 AbstractCegarLoop]: Abstraction has 126017 states and 145378 transitions. [2022-11-02 20:08:09,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 126017 states and 145378 transitions. [2022-11-02 20:08:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-02 20:08:09,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:09,585 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:09,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:08:09,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1921048994, now seen corresponding path program 1 times [2022-11-02 20:08:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:09,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218794381] [2022-11-02 20:08:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-02 20:08:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:10,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218794381] [2022-11-02 20:08:10,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218794381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:10,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:10,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417823904] [2022-11-02 20:08:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:10,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:10,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:10,703 INFO L87 Difference]: Start difference. First operand 126017 states and 145378 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:13,785 INFO L93 Difference]: Finished difference Result 378074 states and 435559 transitions. [2022-11-02 20:08:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:13,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2022-11-02 20:08:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:14,140 INFO L225 Difference]: With dead ends: 378074 [2022-11-02 20:08:14,140 INFO L226 Difference]: Without dead ends: 252262 [2022-11-02 20:08:14,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:14,203 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 789 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:14,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 408 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:08:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252262 states. [2022-11-02 20:08:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252262 to 242090. [2022-11-02 20:08:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242090 states, 242089 states have (on average 1.1476523096877596) internal successors, (277834), 242089 states have internal predecessors, (277834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242090 states to 242090 states and 277834 transitions. [2022-11-02 20:08:19,283 INFO L78 Accepts]: Start accepts. Automaton has 242090 states and 277834 transitions. Word has length 300 [2022-11-02 20:08:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 242090 states and 277834 transitions. [2022-11-02 20:08:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 242090 states and 277834 transitions. [2022-11-02 20:08:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-02 20:08:20,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:20,224 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2022-11-02 20:08:20,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:08:20,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1508885811, now seen corresponding path program 1 times [2022-11-02 20:08:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:20,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296988868] [2022-11-02 20:08:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:08:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:20,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296988868] [2022-11-02 20:08:20,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296988868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:20,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:20,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518282186] [2022-11-02 20:08:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:20,746 INFO L87 Difference]: Start difference. First operand 242090 states and 277834 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:24,020 INFO L93 Difference]: Finished difference Result 436425 states and 499463 transitions. [2022-11-02 20:08:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:24,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2022-11-02 20:08:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:24,337 INFO L225 Difference]: With dead ends: 436425 [2022-11-02 20:08:24,337 INFO L226 Difference]: Without dead ends: 194540 [2022-11-02 20:08:24,444 INFO L412 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 [2022-11-02 20:08:24,445 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 123 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:24,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 350 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:08:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194540 states. [2022-11-02 20:08:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194540 to 181532. [2022-11-02 20:08:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181532 states, 181531 states have (on average 1.1189989588555123) internal successors, (203133), 181531 states have internal predecessors, (203133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181532 states to 181532 states and 203133 transitions. [2022-11-02 20:08:28,185 INFO L78 Accepts]: Start accepts. Automaton has 181532 states and 203133 transitions. Word has length 302 [2022-11-02 20:08:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:28,186 INFO L495 AbstractCegarLoop]: Abstraction has 181532 states and 203133 transitions. [2022-11-02 20:08:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 181532 states and 203133 transitions. [2022-11-02 20:08:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-02 20:08:28,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:28,252 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:08:28,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -102169711, now seen corresponding path program 1 times [2022-11-02 20:08:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606881889] [2022-11-02 20:08:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-02 20:08:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:29,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606881889] [2022-11-02 20:08:29,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606881889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:29,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767083115] [2022-11-02 20:08:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:29,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:29,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:29,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:29,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6e74e2-4205-42b5-af0d-14db4755d2da/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:08:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:29,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:29,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-02 20:08:30,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:30,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767083115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:30,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:30,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:08:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294903044] [2022-11-02 20:08:30,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:30,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:30,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:30,141 INFO L87 Difference]: Start difference. First operand 181532 states and 203133 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)