./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.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_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/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_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/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_86ad2740-c6bb-4ebb-830f-97d7826210c4/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 c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 --- 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 20:38:19,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:19,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:19,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:19,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:19,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:19,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:19,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:19,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:19,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:19,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:19,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:19,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:19,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:19,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:19,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:19,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:19,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:19,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:19,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:19,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:19,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:19,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:19,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:19,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:19,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:19,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:19,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:19,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:19,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:19,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:19,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:19,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:19,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:19,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:19,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:19,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:19,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:19,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:19,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:19,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:19,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:38:19,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:19,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:19,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:19,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:19,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:19,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:19,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:19,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:19,157 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:19,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:19,158 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:19,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:19,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:19,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:19,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:19,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:19,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:19,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:19,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:19,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:19,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:19,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:19,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:19,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:19,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:19,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:19,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:19,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:19,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:19,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:19,165 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:19,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:19,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:19,166 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_86ad2740-c6bb-4ebb-830f-97d7826210c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 [2022-11-02 20:38:19,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:19,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:19,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:19,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:19,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:19,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2022-11-02 20:38:19,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/data/724de9741/17a8afd61ad14e26a212286fb19809a6/FLAG09f7e23ee [2022-11-02 20:38:20,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:20,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2022-11-02 20:38:20,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/data/724de9741/17a8afd61ad14e26a212286fb19809a6/FLAG09f7e23ee [2022-11-02 20:38:21,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/data/724de9741/17a8afd61ad14e26a212286fb19809a6 [2022-11-02 20:38:21,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:21,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:21,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:21,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:21,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:21,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:21" (1/1) ... [2022-11-02 20:38:21,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39615694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:21, skipping insertion in model container [2022-11-02 20:38:21,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:21" (1/1) ... [2022-11-02 20:38:21,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:21,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:24,180 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_86ad2740-c6bb-4ebb-830f-97d7826210c4/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2022-11-02 20:38:24,218 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_86ad2740-c6bb-4ebb-830f-97d7826210c4/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2022-11-02 20:38:24,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:24,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:25,982 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_86ad2740-c6bb-4ebb-830f-97d7826210c4/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2022-11-02 20:38:25,989 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_86ad2740-c6bb-4ebb-830f-97d7826210c4/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2022-11-02 20:38:26,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:26,071 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:26,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26 WrapperNode [2022-11-02 20:38:26,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:26,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:26,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:26,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:26,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:26,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:26,647 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-11-02 20:38:26,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:26,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:26,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:26,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:26,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:26,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:26,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:26,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:27,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:27,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:27,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:27,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (1/1) ... [2022-11-02 20:38:27,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:27,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:27,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:27,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 20:38:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 20:38:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:38:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:38:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 20:38:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 20:38:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 20:38:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 20:38:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 20:38:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 20:38:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 20:38:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 20:38:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:27,557 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:27,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:38,967 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:38,996 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:38,996 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-02 20:38:39,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:39 BoogieIcfgContainer [2022-11-02 20:38:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:39,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:39,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:39,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:39,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:21" (1/3) ... [2022-11-02 20:38:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331aa7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:39, skipping insertion in model container [2022-11-02 20:38:39,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:26" (2/3) ... [2022-11-02 20:38:39,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331aa7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:39, skipping insertion in model container [2022-11-02 20:38:39,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:39" (3/3) ... [2022-11-02 20:38:39,014 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-1.c [2022-11-02 20:38:39,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:39,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:38:39,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:39,156 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;@3b05bdbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:39,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:38:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:38:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:39,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:39,189 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] [2022-11-02 20:38:39,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-11-02 20:38:39,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48527012] [2022-11-02 20:38:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,729 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 20:38:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48527012] [2022-11-02 20:38:39,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48527012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:39,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:39,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841273999] [2022-11-02 20:38:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:39,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:39,805 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:41,042 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-11-02 20:38:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:38:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:41,085 INFO L225 Difference]: With dead ends: 4778 [2022-11-02 20:38:41,085 INFO L226 Difference]: Without dead ends: 2352 [2022-11-02 20:38:41,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:38:41,103 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:41,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 16572 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:38:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-11-02 20:38:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-11-02 20:38:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:38:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-11-02 20:38:41,311 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-11-02 20:38:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:41,313 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-11-02 20:38:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-11-02 20:38:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:41,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:41,328 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] [2022-11-02 20:38:41,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:41,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-11-02 20:38:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:41,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311718157] [2022-11-02 20:38:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:41,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,690 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 20:38:41,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:41,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311718157] [2022-11-02 20:38:41,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311718157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:41,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:41,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:38:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582390309] [2022-11-02 20:38:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:41,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:41,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:41,695 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:43,566 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-11-02 20:38:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:38:43,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:43,587 INFO L225 Difference]: With dead ends: 2738 [2022-11-02 20:38:43,587 INFO L226 Difference]: Without dead ends: 2573 [2022-11-02 20:38:43,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:38:43,594 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:43,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 16580 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:38:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-11-02 20:38:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-11-02 20:38:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-11-02 20:38:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-11-02 20:38:43,732 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-11-02 20:38:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:43,732 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-11-02 20:38:43,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-11-02 20:38:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:43,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:43,736 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] [2022-11-02 20:38:43,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:43,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-11-02 20:38:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762474354] [2022-11-02 20:38:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,113 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 20:38:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762474354] [2022-11-02 20:38:44,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762474354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:44,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409472017] [2022-11-02 20:38:44,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:44,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:44,118 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:46,324 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-11-02 20:38:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:38:46,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:46,338 INFO L225 Difference]: With dead ends: 3131 [2022-11-02 20:38:46,338 INFO L226 Difference]: Without dead ends: 2798 [2022-11-02 20:38:46,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:38:46,342 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21069 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:46,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 21069 Invalid, 1371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:38:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-02 20:38:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-11-02 20:38:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-02 20:38:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-11-02 20:38:46,443 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-11-02 20:38:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:46,444 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-11-02 20:38:46,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-11-02 20:38:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:46,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:46,446 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] [2022-11-02 20:38:46,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:38:46,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:46,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-11-02 20:38:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:46,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115745461] [2022-11-02 20:38:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,664 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 20:38:46,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:46,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115745461] [2022-11-02 20:38:46,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115745461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:46,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:46,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:46,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328530985] [2022-11-02 20:38:46,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:46,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:46,668 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:48,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:48,678 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-11-02 20:38:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:38:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:48,697 INFO L225 Difference]: With dead ends: 3709 [2022-11-02 20:38:48,699 INFO L226 Difference]: Without dead ends: 3219 [2022-11-02 20:38:48,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:38:48,718 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:48,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 20688 Invalid, 1254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:38:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-11-02 20:38:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-11-02 20:38:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-11-02 20:38:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-11-02 20:38:48,887 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-11-02 20:38:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:48,888 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-11-02 20:38:48,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-11-02 20:38:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:48,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:48,891 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] [2022-11-02 20:38:48,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:38:48,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-11-02 20:38:48,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:48,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900534098] [2022-11-02 20:38:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,089 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 20:38:49,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900534098] [2022-11-02 20:38:49,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900534098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:49,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:49,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768679230] [2022-11-02 20:38:49,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:49,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:49,093 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:51,219 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-11-02 20:38:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:38:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:51,240 INFO L225 Difference]: With dead ends: 4824 [2022-11-02 20:38:51,240 INFO L226 Difference]: Without dead ends: 4019 [2022-11-02 20:38:51,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:38:51,246 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21057 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:51,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 21057 Invalid, 1375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:38:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-11-02 20:38:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-11-02 20:38:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-11-02 20:38:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-11-02 20:38:51,477 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-11-02 20:38:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:51,478 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-11-02 20:38:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-11-02 20:38:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:51,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:51,482 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] [2022-11-02 20:38:51,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:38:51,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-11-02 20:38:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:51,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545169691] [2022-11-02 20:38:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,668 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 20:38:51,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545169691] [2022-11-02 20:38:51,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545169691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:51,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:51,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:51,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173283883] [2022-11-02 20:38:51,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:51,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:51,671 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:53,869 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-11-02 20:38:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:38:53,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:53,900 INFO L225 Difference]: With dead ends: 7566 [2022-11-02 20:38:53,900 INFO L226 Difference]: Without dead ends: 6130 [2022-11-02 20:38:53,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:53,909 INFO L413 NwaCegarLoop]: 4367 mSDtfsCounter, 4752 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:53,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21039 Invalid, 1354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:38:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-11-02 20:38:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-11-02 20:38:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-11-02 20:38:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-11-02 20:38:54,275 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-11-02 20:38:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:54,276 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-11-02 20:38:54,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-11-02 20:38:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:54,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:54,279 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] [2022-11-02 20:38:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:38:54,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-11-02 20:38:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:54,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387015797] [2022-11-02 20:38:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,445 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 20:38:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:54,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387015797] [2022-11-02 20:38:54,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387015797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:54,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:54,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044548006] [2022-11-02 20:38:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:54,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:54,449 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:56,985 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-11-02 20:38:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:38:56,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:38:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:57,054 INFO L225 Difference]: With dead ends: 12284 [2022-11-02 20:38:57,054 INFO L226 Difference]: Without dead ends: 9596 [2022-11-02 20:38:57,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:57,066 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 4609 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 21090 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:57,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 21090 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:38:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-11-02 20:38:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-11-02 20:38:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-11-02 20:38:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-11-02 20:38:57,632 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-11-02 20:38:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:57,634 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-11-02 20:38:57,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:38:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-11-02 20:38:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:38:57,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:57,640 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] [2022-11-02 20:38:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:38:57,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-11-02 20:38:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:57,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75320685] [2022-11-02 20:38:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:57,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:38:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:38:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:38:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:38:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,842 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 20:38:57,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:57,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75320685] [2022-11-02 20:38:57,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75320685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:57,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:57,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:38:57,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319635352] [2022-11-02 20:38:57,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:57,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:38:57,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:38:57,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:57,845 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:00,444 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-11-02 20:39:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:39:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:39:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:00,511 INFO L225 Difference]: With dead ends: 21183 [2022-11-02 20:39:00,512 INFO L226 Difference]: Without dead ends: 16082 [2022-11-02 20:39:00,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:39:00,535 INFO L413 NwaCegarLoop]: 4357 mSDtfsCounter, 4672 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 21029 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:00,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 21029 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:39:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-11-02 20:39:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-11-02 20:39:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-11-02 20:39:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-11-02 20:39:01,843 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-11-02 20:39:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-11-02 20:39:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-11-02 20:39:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:39:01,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:01,855 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] [2022-11-02 20:39:01,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:39:01,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-11-02 20:39:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338405181] [2022-11-02 20:39:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:39:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:39:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:39:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:02,003 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 20:39:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338405181] [2022-11-02 20:39:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338405181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:02,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:02,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768631868] [2022-11-02 20:39:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:02,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:02,006 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:05,893 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-11-02 20:39:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:39:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:39:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:06,023 INFO L225 Difference]: With dead ends: 38598 [2022-11-02 20:39:06,023 INFO L226 Difference]: Without dead ends: 28608 [2022-11-02 20:39:06,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:39:06,064 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 4632 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:06,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 21024 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:39:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-11-02 20:39:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-11-02 20:39:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-11-02 20:39:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-11-02 20:39:07,818 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-11-02 20:39:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:07,819 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-11-02 20:39:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-11-02 20:39:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:39:07,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:07,840 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] [2022-11-02 20:39:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:39:07,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-11-02 20:39:07,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462408687] [2022-11-02 20:39:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:07,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:39:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:39:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:39:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,028 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 20:39:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:08,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462408687] [2022-11-02 20:39:08,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462408687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:08,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:39:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143721753] [2022-11-02 20:39:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:08,031 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:13,856 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-11-02 20:39:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:39:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:39:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:14,303 INFO L225 Difference]: With dead ends: 72173 [2022-11-02 20:39:14,303 INFO L226 Difference]: Without dead ends: 52438 [2022-11-02 20:39:14,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:39:14,369 INFO L413 NwaCegarLoop]: 4353 mSDtfsCounter, 4577 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 21010 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:14,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4587 Valid, 21010 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:39:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-11-02 20:39:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-11-02 20:39:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-11-02 20:39:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-11-02 20:39:18,416 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-11-02 20:39:18,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-11-02 20:39:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-11-02 20:39:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:39:18,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:18,458 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] [2022-11-02 20:39:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:39:18,458 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-11-02 20:39:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:18,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110603631] [2022-11-02 20:39:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:39:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:39:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:39:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,582 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 20:39:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:18,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110603631] [2022-11-02 20:39:18,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110603631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:18,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:18,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229336978] [2022-11-02 20:39:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:18,586 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:26,707 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-11-02 20:39:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:39:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-02 20:39:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:26,975 INFO L225 Difference]: With dead ends: 113490 [2022-11-02 20:39:26,975 INFO L226 Difference]: Without dead ends: 74355 [2022-11-02 20:39:27,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:39:27,164 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16887 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16887 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:39:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-11-02 20:39:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-11-02 20:39:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-11-02 20:39:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-11-02 20:39:33,767 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-11-02 20:39:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:33,768 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-11-02 20:39:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:39:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-11-02 20:39:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 20:39:33,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:33,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:39:33,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:39:33,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-11-02 20:39:33,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:33,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883632981] [2022-11-02 20:39:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:39:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:39:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:39:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:39:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:39:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:39:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-02 20:39:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:39:34,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:34,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883632981] [2022-11-02 20:39:34,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883632981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068708087] [2022-11-02 20:39:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:34,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:34,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:34,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:34,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ad2740-c6bb-4ebb-830f-97d7826210c4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:39:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:39:34,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:39:34,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:34,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068708087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:34,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:34,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 20:39:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754677706] [2022-11-02 20:39:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:39:34,508 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)