./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/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_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/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_f4737e55-fb41-49b4-aee8-2b1767b7b37c/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 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 --- 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 21:03:02,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:02,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:02,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:02,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:02,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:02,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:02,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:02,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:02,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:02,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:02,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:02,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:02,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:02,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:02,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:02,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:02,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:02,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:02,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:02,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:02,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:02,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:02,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:02,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:02,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:02,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:02,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:02,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:02,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:02,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:02,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:02,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:02,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:02,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:02,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:02,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:02,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:02,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:02,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:02,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:02,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:02,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:02,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:02,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:02,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:02,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:02,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:02,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:02,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:02,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:02,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:02,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:02,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:02,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:02,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:02,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:02,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:02,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:02,906 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:02,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:02,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:02,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:02,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:02,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:02,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:02,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:02,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:02,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:02,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:02,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:02,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:02,910 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:02,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:02,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:02,911 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_f4737e55-fb41-49b4-aee8-2b1767b7b37c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 [2022-11-02 21:03:03,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:03,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:03,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:03,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:03,256 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:03,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2022-11-02 21:03:03,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/data/8a0e1b8ec/0561a661377d416fa52ea5dde4dd244f/FLAGa0e528918 [2022-11-02 21:03:03,785 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:03,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2022-11-02 21:03:03,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/data/8a0e1b8ec/0561a661377d416fa52ea5dde4dd244f/FLAGa0e528918 [2022-11-02 21:03:04,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/data/8a0e1b8ec/0561a661377d416fa52ea5dde4dd244f [2022-11-02 21:03:04,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:04,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:04,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:04,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:04,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:04,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af62a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04, skipping insertion in model container [2022-11-02 21:03:04,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:04,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:04,457 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_f4737e55-fb41-49b4-aee8-2b1767b7b37c/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2022-11-02 21:03:04,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:04,546 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:04,558 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_f4737e55-fb41-49b4-aee8-2b1767b7b37c/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2022-11-02 21:03:04,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:04,642 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:04,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04 WrapperNode [2022-11-02 21:03:04,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:04,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:04,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:04,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:04,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,740 INFO L138 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 505 [2022-11-02 21:03:04,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:04,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:04,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:04,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:04,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:04,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:04,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:04,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:04,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:04,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:04,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4737e55-fb41-49b4-aee8-2b1767b7b37c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:03:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:03:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:03:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:03:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:03:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:03:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:05,072 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:05,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:05,913 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:05,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:05,941 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-02 21:03:05,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:05 BoogieIcfgContainer [2022-11-02 21:03:05,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:05,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:05,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:05,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:05,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:04" (1/3) ... [2022-11-02 21:03:05,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768da37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:05, skipping insertion in model container [2022-11-02 21:03:05,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (2/3) ... [2022-11-02 21:03:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768da37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:05, skipping insertion in model container [2022-11-02 21:03:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:05" (3/3) ... [2022-11-02 21:03:05,954 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.c [2022-11-02 21:03:05,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:05,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:06,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:06,065 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;@3c837552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:06,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:03:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 21:03:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:06,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:06,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:06,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1459493847, now seen corresponding path program 1 times [2022-11-02 21:03:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:06,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957323246] [2022-11-02 21:03:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,701 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 21:03:06,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:06,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957323246] [2022-11-02 21:03:06,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957323246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:06,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:06,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:06,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304832224] [2022-11-02 21:03:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:06,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:06,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:06,754 INFO L87 Difference]: Start difference. First operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 21:03:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:08,029 INFO L93 Difference]: Finished difference Result 533 states and 868 transitions. [2022-11-02 21:03:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:03:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:08,045 INFO L225 Difference]: With dead ends: 533 [2022-11-02 21:03:08,045 INFO L226 Difference]: Without dead ends: 303 [2022-11-02 21:03:08,049 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 21:03:08,053 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 584 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:08,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 625 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:03:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-02 21:03:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 227. [2022-11-02 21:03:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 200 states have (on average 1.54) internal successors, (308), 201 states have internal predecessors, (308), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 21:03:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 348 transitions. [2022-11-02 21:03:08,155 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 348 transitions. Word has length 111 [2022-11-02 21:03:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:08,156 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 348 transitions. [2022-11-02 21:03:08,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 21:03:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 348 transitions. [2022-11-02 21:03:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:08,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:08,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:08,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:08,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1446179435, now seen corresponding path program 1 times [2022-11-02 21:03:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:08,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086533724] [2022-11-02 21:03:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,570 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 21:03:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:08,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086533724] [2022-11-02 21:03:08,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086533724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:08,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:08,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:03:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925298886] [2022-11-02 21:03:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:03:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:03:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:03:08,578 INFO L87 Difference]: Start difference. First operand 227 states and 348 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 21:03:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:10,733 INFO L93 Difference]: Finished difference Result 811 states and 1275 transitions. [2022-11-02 21:03:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:10,739 INFO L225 Difference]: With dead ends: 811 [2022-11-02 21:03:10,740 INFO L226 Difference]: Without dead ends: 598 [2022-11-02 21:03:10,744 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 21:03:10,745 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 863 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:10,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1056 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:03:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-02 21:03:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 447. [2022-11-02 21:03:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 398 states have (on average 1.5527638190954773) internal successors, (618), 400 states have internal predecessors, (618), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-11-02 21:03:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 691 transitions. [2022-11-02 21:03:10,823 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 691 transitions. Word has length 111 [2022-11-02 21:03:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 691 transitions. [2022-11-02 21:03:10,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 21:03:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 691 transitions. [2022-11-02 21:03:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:10,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:10,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:10,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1569789201, now seen corresponding path program 1 times [2022-11-02 21:03:10,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:10,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607318141] [2022-11-02 21:03:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:10,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,194 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 21:03:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:11,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607318141] [2022-11-02 21:03:11,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607318141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:11,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:11,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373056156] [2022-11-02 21:03:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:11,200 INFO L87 Difference]: Start difference. First operand 447 states and 691 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:13,877 INFO L93 Difference]: Finished difference Result 1334 states and 2095 transitions. [2022-11-02 21:03:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:13,890 INFO L225 Difference]: With dead ends: 1334 [2022-11-02 21:03:13,890 INFO L226 Difference]: Without dead ends: 901 [2022-11-02 21:03:13,893 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 21:03:13,903 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 869 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:13,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1679 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:03:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-02 21:03:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 652. [2022-11-02 21:03:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 581 states have (on average 1.5456110154905336) internal successors, (898), 584 states have internal predecessors, (898), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-02 21:03:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1003 transitions. [2022-11-02 21:03:14,020 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1003 transitions. Word has length 111 [2022-11-02 21:03:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:14,020 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1003 transitions. [2022-11-02 21:03:14,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1003 transitions. [2022-11-02 21:03:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:14,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:14,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:03:14,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1106203181, now seen corresponding path program 1 times [2022-11-02 21:03:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903483033] [2022-11-02 21:03:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,274 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 21:03:14,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903483033] [2022-11-02 21:03:14,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903483033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:14,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:14,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99928847] [2022-11-02 21:03:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:14,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:14,278 INFO L87 Difference]: Start difference. First operand 652 states and 1003 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:16,831 INFO L93 Difference]: Finished difference Result 2104 states and 3295 transitions. [2022-11-02 21:03:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:16,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:16,843 INFO L225 Difference]: With dead ends: 2104 [2022-11-02 21:03:16,843 INFO L226 Difference]: Without dead ends: 1466 [2022-11-02 21:03:16,846 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 21:03:16,857 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 933 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:16,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1168 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:03:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-11-02 21:03:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1063. [2022-11-02 21:03:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 948 states have (on average 1.5390295358649788) internal successors, (1459), 953 states have internal predecessors, (1459), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2022-11-02 21:03:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1632 transitions. [2022-11-02 21:03:17,027 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1632 transitions. Word has length 111 [2022-11-02 21:03:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:17,028 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1632 transitions. [2022-11-02 21:03:17,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1632 transitions. [2022-11-02 21:03:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:17,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:17,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:17,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:03:17,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash 222694191, now seen corresponding path program 1 times [2022-11-02 21:03:17,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:17,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674055373] [2022-11-02 21:03:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,314 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 21:03:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:17,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674055373] [2022-11-02 21:03:17,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674055373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80533971] [2022-11-02 21:03:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:17,317 INFO L87 Difference]: Start difference. First operand 1063 states and 1632 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:19,929 INFO L93 Difference]: Finished difference Result 3584 states and 5592 transitions. [2022-11-02 21:03:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:19,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:19,945 INFO L225 Difference]: With dead ends: 3584 [2022-11-02 21:03:19,945 INFO L226 Difference]: Without dead ends: 2535 [2022-11-02 21:03:19,949 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 21:03:19,950 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 863 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1663 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:03:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-11-02 21:03:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1891. [2022-11-02 21:03:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1688 states have (on average 1.5349526066350712) internal successors, (2591), 1697 states have internal predecessors, (2591), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2022-11-02 21:03:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2906 transitions. [2022-11-02 21:03:20,182 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2906 transitions. Word has length 111 [2022-11-02 21:03:20,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:20,182 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2906 transitions. [2022-11-02 21:03:20,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2906 transitions. [2022-11-02 21:03:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:20,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:20,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:20,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:03:20,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1717887823, now seen corresponding path program 1 times [2022-11-02 21:03:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:20,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930987963] [2022-11-02 21:03:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,377 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 21:03:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930987963] [2022-11-02 21:03:20,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930987963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:20,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:20,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195242306] [2022-11-02 21:03:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:20,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:20,379 INFO L87 Difference]: Start difference. First operand 1891 states and 2906 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:23,235 INFO L93 Difference]: Finished difference Result 6554 states and 10220 transitions. [2022-11-02 21:03:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:23,262 INFO L225 Difference]: With dead ends: 6554 [2022-11-02 21:03:23,262 INFO L226 Difference]: Without dead ends: 4677 [2022-11-02 21:03:23,270 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 21:03:23,271 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 862 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:23,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1658 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:03:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-11-02 21:03:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 3552. [2022-11-02 21:03:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3173 states have (on average 1.5319886542704066) internal successors, (4861), 3190 states have internal predecessors, (4861), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2022-11-02 21:03:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5478 transitions. [2022-11-02 21:03:23,689 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5478 transitions. Word has length 111 [2022-11-02 21:03:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:23,690 INFO L495 AbstractCegarLoop]: Abstraction has 3552 states and 5478 transitions. [2022-11-02 21:03:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5478 transitions. [2022-11-02 21:03:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:23,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:23,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:03:23,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 159175407, now seen corresponding path program 1 times [2022-11-02 21:03:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:23,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093901647] [2022-11-02 21:03:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,961 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 21:03:23,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093901647] [2022-11-02 21:03:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093901647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:23,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793741138] [2022-11-02 21:03:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:23,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:23,965 INFO L87 Difference]: Start difference. First operand 3552 states and 5478 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:27,057 INFO L93 Difference]: Finished difference Result 12493 states and 19534 transitions. [2022-11-02 21:03:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:27,105 INFO L225 Difference]: With dead ends: 12493 [2022-11-02 21:03:27,106 INFO L226 Difference]: Without dead ends: 8955 [2022-11-02 21:03:27,119 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 21:03:27,121 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 861 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:27,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1653 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:03:27,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2022-11-02 21:03:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 6889. [2022-11-02 21:03:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6889 states, 6158 states have (on average 1.5302046118869763) internal successors, (9423), 6191 states have internal predecessors, (9423), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2022-11-02 21:03:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10698 transitions. [2022-11-02 21:03:28,037 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10698 transitions. Word has length 111 [2022-11-02 21:03:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:28,037 INFO L495 AbstractCegarLoop]: Abstraction has 6889 states and 10698 transitions. [2022-11-02 21:03:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10698 transitions. [2022-11-02 21:03:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:28,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:28,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:28,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:03:28,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:28,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash -611558159, now seen corresponding path program 1 times [2022-11-02 21:03:28,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:28,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437318229] [2022-11-02 21:03:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,256 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 21:03:28,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:28,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437318229] [2022-11-02 21:03:28,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437318229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:28,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:28,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122507486] [2022-11-02 21:03:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:28,259 INFO L87 Difference]: Start difference. First operand 6889 states and 10698 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,784 INFO L93 Difference]: Finished difference Result 27348 states and 42838 transitions. [2022-11-02 21:03:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:32,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,899 INFO L225 Difference]: With dead ends: 27348 [2022-11-02 21:03:32,899 INFO L226 Difference]: Without dead ends: 20473 [2022-11-02 21:03:32,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:32,931 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 1112 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1638 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:03:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2022-11-02 21:03:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 13498. [2022-11-02 21:03:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13498 states, 12095 states have (on average 1.5319553534518395) internal successors, (18529), 12160 states have internal predecessors, (18529), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2022-11-02 21:03:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 21218 transitions. [2022-11-02 21:03:35,080 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 21218 transitions. Word has length 111 [2022-11-02 21:03:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:35,080 INFO L495 AbstractCegarLoop]: Abstraction has 13498 states and 21218 transitions. [2022-11-02 21:03:35,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 21218 transitions. [2022-11-02 21:03:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:35,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:35,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:35,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:03:35,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:35,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1606251857, now seen corresponding path program 1 times [2022-11-02 21:03:35,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:35,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216004700] [2022-11-02 21:03:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,341 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 21:03:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216004700] [2022-11-02 21:03:35,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216004700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:35,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:35,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:35,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294481849] [2022-11-02 21:03:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:35,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:35,345 INFO L87 Difference]: Start difference. First operand 13498 states and 21218 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:42,483 INFO L93 Difference]: Finished difference Result 53027 states and 83964 transitions. [2022-11-02 21:03:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:42,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:42,669 INFO L225 Difference]: With dead ends: 53027 [2022-11-02 21:03:42,669 INFO L226 Difference]: Without dead ends: 39543 [2022-11-02 21:03:42,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:42,750 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 911 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:42,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1721 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:03:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39543 states. [2022-11-02 21:03:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39543 to 26363. [2022-11-02 21:03:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26363 states, 23648 states have (on average 1.5332797699594045) internal successors, (36259), 23777 states have internal predecessors, (36259), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2022-11-02 21:03:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26363 states to 26363 states and 42198 transitions. [2022-11-02 21:03:45,932 INFO L78 Accepts]: Start accepts. Automaton has 26363 states and 42198 transitions. Word has length 111 [2022-11-02 21:03:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:45,935 INFO L495 AbstractCegarLoop]: Abstraction has 26363 states and 42198 transitions. [2022-11-02 21:03:45,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 26363 states and 42198 transitions. [2022-11-02 21:03:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:03:45,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:45,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:45,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:03:45,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2102439217, now seen corresponding path program 1 times [2022-11-02 21:03:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:45,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222555405] [2022-11-02 21:03:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:03:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:03:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:03:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:03:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,335 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 21:03:46,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:46,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222555405] [2022-11-02 21:03:46,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222555405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:46,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:46,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327154817] [2022-11-02 21:03:46,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:46,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:46,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:46,338 INFO L87 Difference]: Start difference. First operand 26363 states and 42198 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:03:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:58,332 INFO L93 Difference]: Finished difference Result 102242 states and 164674 transitions. [2022-11-02 21:03:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2022-11-02 21:03:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:58,663 INFO L225 Difference]: With dead ends: 102242 [2022-11-02 21:03:58,664 INFO L226 Difference]: Without dead ends: 75893 [2022-11-02 21:03:58,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:58,770 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1032 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1628 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:03:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75893 states. [2022-11-02 21:04:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75893 to 52348. [2022-11-02 21:04:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52348 states, 47073 states have (on average 1.5357636012151339) internal successors, (72293), 47330 states have internal predecessors, (72293), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2022-11-02 21:04:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52348 states to 52348 states and 86062 transitions. [2022-11-02 21:04:04,829 INFO L78 Accepts]: Start accepts. Automaton has 52348 states and 86062 transitions. Word has length 111 [2022-11-02 21:04:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:04,829 INFO L495 AbstractCegarLoop]: Abstraction has 52348 states and 86062 transitions. [2022-11-02 21:04:04,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 21:04:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52348 states and 86062 transitions. [2022-11-02 21:04:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 21:04:04,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:04,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:04,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:04:04,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:04,874 INFO L85 PathProgramCache]: Analyzing trace with hash 143864431, now seen corresponding path program 1 times [2022-11-02 21:04:04,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:04,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595601100] [2022-11-02 21:04:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:04:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:04:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:04:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 21:04:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:04:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,066 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 21:04:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595601100] [2022-11-02 21:04:05,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595601100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:05,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:05,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101528883] [2022-11-02 21:04:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:05,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:05,069 INFO L87 Difference]: Start difference. First operand 52348 states and 86062 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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)